Using the UCC29950EVM-631
User's Guide
Literature Number: SLUUB69A
March 2015–Revised March 2015
User's Guide
SLUUB69A–March 2015–Revised March 2015
Using the UCC29950EVM-631
300-W PFC/LLC Off-Line PSU Module
1 Introduction
The UCC29950EVM-631 evaluation module is a 300-W nominal, two-stage off-line converter. The EVM
consists of a Continuous Conduction Mode (CCM) PFC input stage followed by a half-bridge LLC output
and isolation stage. It provides a 12-V constant-voltage output with overload and short circuit protection.
The UCC29950 incorporates a wide range of protection features to ensure safe system operation. The
EVM may be operated without an external bias supply in Self Bias Mode, or with an external bias supply
in Aux Bias Mode.
2 Description
This evaluation module uses the UCC29950 CCM PFC and LLC Combo Controller in a 300-W converter
The input accepts a voltage range of 90 VAC to 265 VAC. It has an output voltage of 12 V and a maximum
output current of 25 A. Refer to the UCC29950 datasheet, (TI Literature Number SLUSC18), for full specs
and details about the controller features. This EVM makes use of the device features to control a two-
stage power supply that is rated for 300-W output power.
An overload timer tracks the extent and duration of overload and trips the overload protection when the
current exceeds the over-current protection profile described in the datasheet. The overload protection
turns the power stages off and then attempts restarts at 1 second intervals.
If the VCC level at the UC29950 controller falls below the UVLO threshold the controller shuts down. It will
attempt a restart when VCC recovers.
The over-temperature protection feature of the UCC29950 trips If the temperature of the device exceeds
the thermal shutdown temperature. The device restarts once the temperature falls to the restart
temperature.
The UCC29950 employs frequency dithering to reduce conducted emissions and therefore reduce the size
and cost of the EMI filter.
This user’s guide provides the schematic, component list, assembly drawing, art work and test set up
necessary to evaluate the UCC29950EVM-631.
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Description
2.1 Features
UCC29950EVM-631 features include:
• AC Input Range 90 VAC to 264 VAC
• DC Output of 12 V, 25 A
• A CCM Boost Power Factor Correction Input Stage for High-Power Factor and High Efficiency
• An LLC Output Stage for High Efficiency
• Low Start-Up Current, with Integrated High-Voltage Start-Up Control
• On/Off Control of PFC Stage and PFC / LLC Stages
• Current Sense Inputs for PFC / LLC Overload Protection
• Line Brownout Protection
• PFC Bus Over-Voltage and Under-Voltage Protection
• X-Cap Discharge Function for Reduced System Standby Power Consumption
• Three Level LLC Over-Current Protection for Loads with High-Peak Power Requirements
• Short Circuit Protection
• Over Temperature Protection
• Operation in Self Bias or Aux Bias Modes
CAUTION
High voltage levels are present on the evaluation module whenever it is
energized. Proper precautions must be taken when working with the EVM. The
large bulk capacitor, C6, and the output capacitors C17, C20, C21, C22, C23,
C24, C20 and C12, must be completely discharged before the EVM can be
handled. Serious injury can occur if proper safety precautions are not followed.
2.2 Typical Applications
The UCC29950 is suited for use in mid-to-high power off-line converters. It is simple to use and has a low-
external component count with extensive fault protection features.
• Televisions
• High Efficiency AC-to-DC server power supplies
• High Density Adapters
• 80+ SILVER PC Silver Box
• Gaming
• Audio
• Lighting Drivers
• Industrial Power
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Electrical Performance Specifications
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3 Electrical Performance Specifications
Table 1. UCC29950EVM-631 Performance Summary
PARAMETER TEST CONDITION MIN TYP MAX UNIT
Input Characteristics
VIN Input voltage 90 115/230 265 VAC
fLINE Input frequency 47 63 Hz
VIN = 115 V
PIN(115V_no-load) No-load input power fLINE = 60 Hz, 200 mW
IOUT = 0 A
VIN = 230 V
PIN(230V_no-load) No-load input power fLINE = 50 Hz, 200 mW
IOUT = 0 A
VIN = 90 V),
IIN(peak) Peak input current fLINE = 60 Hz, 5.4 A
IOUT = 25 A
AC turn-on voltage 80 VAC
AC turn-off voltage 75
Output Characteristics
VIN(min) < VIN < VIN(max),
VOUT Output voltage fLINE(min) < fLINE < fLINE(max), 11.9 12.0 12.1 VDC
IOUT(min) < IOUT < IOUT(max)
VIN(min) < VIN < VIN(max),
VOUT(line) Line regulation 0.1%
IOUT = IOUT(max)
VIN = 115 VAC,
fLINE = 60 Hz, 0.1%
IOUT(min) < IOUT < IOUT(max)
VOUT(load) Load regulation VIN = 230 VAC,
fLINE = 50 Hz, 0.1%
IOUT(min) < IOUT < IOUT(max)
VIN(min) < VIN < VIN(max)
IOUT Output load current 0 25 A
fLINE(min) < fLINE < fLINE(max)
VIN(min) < VIN < VIN(max)
POUT Output power 0 300 W
fLINE(min) < fLINE < fLINE(max)
VIN = 115 VAC,
High-frequency output voltage ripple fLINE = 60 Hz 400 mVP-P
(measured with of a 10-µF aluminum IOUT = IOUT(max)
VRIPPLE(SW) electrolytic capacitor and a 1-µF high- VIN = 230 VAC,
frequency ceramic capacitor across the fLINE = 50 Hz 400 mVP-P
output terminals.) IOUT = IOUT(max)
IOCC Steady-state output over current threshold VIN(min) ≤VIN ≤VIN(max) 28 A
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Electrical Performance Specifications
Table 1. UCC29950EVM-631 Performance Summary (continued)
PARAMETER TEST CONDITION MIN TYP MAX UNIT
System Characteristics
Switching frequency – including ±2-kHz
fSW(PFC) TJ= 25°C 87 100 109 kHz
dither VIN = 115 VAC,
60 Hz, 0.999
IOUT = IOUT(max)
PF Power factor VIN = 230 VAC,
50 Hz, 0.995
IOUT = IOUT(max)
VIN = 115 VAC,
fLINE = 60 Hz, 3% 10%
IOUT = IOUT(max)
THD Total harmonic distortion VIN = 230 VAC,
fLINE = 50 Hz 6% 10%
IOUT = IOUT(max)
fSW(LLC) LLC stage switching frequency 70 110 350 kHz
VIN = 115 VAC,
fLINE = 60 Hz, 88.3%
IOUT = IOUT(max)
ηFL Full load efficiency VIN = 230 VAC,
fLINE = 50 Hz, 90.5%
IOUT = IOUT(max)
VIN = 115 VAC,
fLINE = 60 Hz, 87.8%
IOUT = IOUT(max)
ηAV Average efficiency VIN = 230 VAC,
fLINE = 50 Hz, 90.2%
IOUT = IOUT(max)
tAMB Ambient temperature 25 °C
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TP10
10µF
C34
0.1µF
C33
3.32k
R56
470pF
C36
0.1µF
C40
Q4
10.0k
R41
0.1µF
C39
2.21k
R55
3.09Meg
R49
3.09Meg
R50
3.09Meg
R51
10.0Meg
R42
3.3Meg
R46
75.0k
R45
0
R36
1000pF
C41
470
R52
D18
AGND
ACDET1
AC1
PGND
ACDET1
FB
MOSI
MOSI
PSON
VCC
PSON
PGND
PGND
AGND
AGND
AGND
AGND
TP9
10µF
C35
10.0Meg
R43
10.0Meg
R44
D16
D15
0
R37
0
R48
Green
D17
12
34
56
78
910
J6
5103308-1
470pF
C37
AGND
D19
470
R53
AGND
470pF
C38
AGND
3.09Meg
R39
3.09Meg
R40
3.09Meg
R38
100k
R47
100k
R54
AGND
PSON
TP16
TP17
TP12
TP13
TP15
VCC
VCC
BULK
AC1
AC2
PFCCS
LLC_RCS
FB
GD1
0
R35
TP14
PFCGD
GD2
46
3 1
S1
46
3 1
S2
100pF
C46
AGND
R61
1.00k
TP11
0
R19
GD2 2
VCC
3
SUFG 4
SUFS
5
AGND 6
MD_SEL/PS_ON
7
VBULK
8
AC2
9AC1
10
LLC_CS
11
FB
12
PFC_CS
13
GD1 14
AC_DET 15
PFC_GD 16
GND 1
U6
UCC29950D
375Vdc
Schematic
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4 Schematic
Figure 1. UCC29950EVM-631 Schematic - Control
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H1 HEATSINK D2, D3, Q1
H3 HEATSINK D4, D6
H2 HEATSINK Q1, Q2
V1
C28
NF
Q2
AOW25S65
49.9
R24
10.0k
R12
10.0k
R18
1 Fμ
C18
1000pF
C10
0.047μF
C29
C30
NF
C31
NF
1000μF
C21
D5
NF
D9
NF
R27
NF
18.0k
R26
3.30
R10
3.30
R17
R29
NF
R32
NF
R16
NF
330μF
C20
1.5μH
L4
L3
0.47μF
C1
0.47μF
C2
t°
5 ohm
RT1
0.33μF
C3
0.1
R4
0.1
R6
D1
1
3 2
Q1
3.3
R2
270μF
C6
0.1μF
C4
0.1μF
C5
0.012μF
C13
10.0
R1
1.20k
R23
R34
NF
220μF
C26
0.1μF
C27
TP5
NF
R21
R20
NF 5.10k
R22
10.0k
R25
0.1μF
C8
47μF
C7
0
R30
D13 D12
1
2
3
D7
1
2
3
D8
STPS40L45CT
0.1μF
C32
TP8
TP2
51.1
R11
R28
NF
51.1
R13
0
R31
TP1
TP4
TP3
100pF
C45
100pF
C44 1 Fμ
C25
BULK
LLC_RCS
PGND SEC_0V
SEC_0V
AGND
SEC_0V
PGND
D3
C3D04060A
~
+
~
-
D2
250V 8A
F1
Q3
AOW25S65
1
2
4
3
U3
ACPL-217-56AE
1
2
4
3
U4
ACPL-217-56AE
1 Fμ
C9
1
2
3
J1
1.20
R7
D6
0.012μF
C14
0.016μF
C11
0.047μF
C15
1000μF
C22
1000μF
C23
1000μF
C24
330μF
C17
18V
D11 12V
D14
BZX384-C12,115
2.2mH
L1
46
3 1
S3
NF
LINE
NEUTRAL +PFC BULK
PFC BULK RTN
1 Fμ
C16
NT1
Net-Tie
AGND
+VOUT
+VOUT
TP6
TP7
10K
R33
VCC
VCC
VCC
OUTPUT: 12 VDC, 25 A
+VOUT
VOUT RTN
NOMINAL VBULK: 390VDC
AC1
AC2
PFCCS
PFCGD
GD2
GD1
FB
VCC
LLC_RCS
BULK
PGND
1.00
R57
2.2
R58
L2
1
2
3
4
J3
1
2
3
J2
1
2
3
5
6
13
14
15
16
17
18
19
20
T1
TP19
TP27
TP24
TP21
TP26
TP18
TP23
TP20
TP22
TP28
1
2
3
HS1
1
2
3
HS2
1
2
3
HS3
PGND
TP25
TP29
TP30
TP31
TP32 TP33
10.0M
R14
1.10M
R15
AGND
10μF
C43
1
2
3
J4
D20
OUT
1
FB
2PG
3
4
EN 5
NC
6DELAY 7
IN 8
9
EPGND
U7
TPS7A1601DGNT 0.1μF
C42
VCC
10μF
C47
0.01μF
C48
1.0
R3
J5
D4
0.1
R5
1.20
R8
1.20
R9
D10
100k
R59
0
R60
10.0k
R62
SEC_0V
HIGH VOLTAGE
HIGH VOLTAGE
HI
1
LI
2
VSS 3
NC/EN
4
COM 5
LO 6
VDD
7
NC
8
NC
9
NC
10
HS 11
HO 12
HB 13
NC
14
U2
UCC27714D
PGND
0.1μF
C12
3
2
1
U5
TL431AIDBZR
VDD 1
OUTH 2
OUTL 3
GND
4
IN-
5
IN+
6
U1
UCC27511DBVR
90VAC to 264VAC
385V to 450VDC
90VAC to 264VAC
MECH
Tinned Copper
H33
296 SV005
i
LV
0.016μF
C19
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Schematic
Figure 2. UCC29950EVM-631 Schematic - Power
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Fan
62 k:,
5W
Electronic
Load
+-
V1
-+ A1
-
+
V2
-+
AC Source
L N
Power Meter
+
-
+
-
Voltage
Current
The 62-k: resistor and the
V2 Meter provide monitoring
and an automatic discharge
of the PFC stage output
capacitance (C6). They are
recommended but are not
necessary for operation and
may be omitted. Remember
to discharge C6 when
finished.
The voltage on the bulk
capacitor, C6, may be
monitored at J2 as shown
or at TP31 (pos) and TP
32 (neg)
Test Setup
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5 Test Setup
Figure 3 shows the test setup recommended in order to evaluate the UCC29950EVM-631 in Self Bias
Mode. Figure 4 shows the test setup recommended in order to evaluate the UCC29950EVM-631 in Aux
Bias Mode.
Figure 3. UCC29950EVM-631 Recommended Self Bias Test Set Up
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Fan
62 k:,
5 W
Electronic
Load
+-
V1
-
+A1
-
+
13 V Bias
Supply
+-
V2
-
+
AC Source
L N
Power Meter
+
-
+
-
Voltage
Current
The 62-k: resistor and the
V2 Meter provide monitoring
and an automatic discharge
of the PFC stage output
capacitance (C6). They are
recommended but are not
necessary for operation and
may be omitted. Remember
to discharge C6 when
finished.
The voltage on the bulk
capacitor, C6, may be
monitored at J2 as shown
or at TP31 (pos) and TP
32 (neg)
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Test Setup
Figure 4. UCC29950EVM-631 Recommended Aux Bias Test Set Up
WARNING
High voltages that may cause injury exist on this evaluation
module (EVM). Please ensure all safety procedures are followed
when working on this EVM. Never leave a powered EVM
unattended.
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Test Setup
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5.1 Test Equipment
AC Source: (for example, Hewlett Packard 6813B 300 VRMS, 1750 VA AC Power Source/Analyzer) or
VARIAC. The input voltage shall be a transformer isolated variable AC source capable of supplying
between 90 VAC and 264 VAC, at 50 Hz and 60 Hz, at no less than 10-A peak.
13-V Bias Supply: The bias supply to the device shall be capable of supplying up to 13 VDC at no less
than 100 mA. Connect the bias supply to the negative and positive terminals of J5, shown in Figure 3 and
Figure 4.
Output Load: One Electronic Load (for example TDI RBL 488 600-40-800). A programmable electronic
load set to constant current mode and capable of sinking 0 A to 25 A at 12 VDC shall be used. Connect the
load to J3 as shown in Figure 3 and Figure 4.
Power Meter: For highest accuracy, a power analyzer shall be used to measure the input power, THD,
and power factor. An example of such an analyzer is the Voltech PM100 Single Phase Power Analyzer or
the Yokogawa WT210/WT230 Digital Power Meter.
Multimeters: For highest accuracy, the output voltage of the UCC29950EVM-631 shall be monitored by
connecting a digital voltmeter, V1, directly across TP18 and TP27 with the positive terminal at TP18 and
the negative terminal at TP27. A dc current meter, A1, should be placed in series with the electronic load
for accurate output current measurements.
Oscilloscope: A digital or analog oscilloscope with 500-MHz scope probes is recommended.
Fan: A fan, capable of 200 LFM to 400 LFM, should be used to maintain component temperatures within
safe operating ranges at all times during operation of the UCC29950EVM-631. Position the fan so as to
blow along the length of the heatsink as shown in Figure 3 and Figure 4.
Recommended Wire Gauge: All electrical connections to the EVM must be made using appropriately
rated wire. The line connections at J1, the PFC Output connections at J2 and the Aux Bias connections at
J5 may be made using 22 AWG (0.5 mm2) Tri Rated wire. The output connections at J3 may be made
with 16 AWG (1.5 mm2) Tri Rated wire. Use two conductors for the positive output and two for the
negative output. The normal output load current of 25 A causes a voltage drop of about 250 mV per meter
in both the positive and negative connections.
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Test Setup
5.2 List of Test Points
Table 2. Test Point Functional Description
TEST POINT NAME DESCRIPTION
TP1 TP1 AC line input
TP2 TP2 Drain of PFC stage MOSFET
TP3 PFCCS Signal across PFC current sensing resistor
TP4 TP4 AC neutral Input
TP5 VCC VCC supply to the UCC29950 controller
TP6 VOUT Loop injection point
TP7 TP7 Loop injection point
TP8 AGND Analog (signal) ground
TP9 VCC VCC rail for UCC29950
TP10 AGND Analog (signal) ground
TP11 AC_DET AC_DET signal output
TP12 GD1 LLC low-side MOSFET gate-drive output signal
TP13 GD2 LLC high-side MOSFET gate-drive output signal
TP14 PFC_GD PFC stage MOSFET gate-drive output signal
TP15 PSON MD_SEL/PS_ON signal
TP16 LLC_CS LLC stage current sense input signal
TP17 FB LLC stage feedback signal
TP18 TP18 LLC stage split capacitor
TP19 +VOUT EVM positive output
TP20 TP20 LLC transformer output
TP21 VDD VDD supply to MOSFET driver devices
TP22 TP20 LLC transformer output
TP23 TP23 LLC stage rectified output
TP24 TP24 LLC stage low-side MOSFET gate
TP25 TP25 LLC stage high-side MOSFET gate
TP26 TP26 LLC stage input switched node
TP27 VOUT RTN EVM negative output
TP28 PGND Power ground
TP29 TP29 Output adjust monitor
TP30 TP30 Output adjust monitor
TP31 VBULK PFC stage output voltage (typical 385 V)
TP32 PGND Power ground
TP33 PGND Power ground
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TP3
TP5
TP8
J4
H12
RTN BIAS +
J6
Test Setup
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5.3 Power-Up/Power-Down Procedure: Self Bias Mode
The following test procedure is recommended primarily for power up and shutting down the evaluation
Module in Self Bias mode. Never leave a powered EVM unattended for any length of time. Also, the unit
should never be handled while power is applied to it.
WARNING
There are very high voltages present on the EVM. Some
components reach temperatures above 50°C. Precautions must be
taken when handling the board. Never operate the UCC29950EVM-
631 without the fan running. Always make certain the bulk
capacitor (C6) has completely discharged prior to handling the
EVM.
1. Working at an ESD workstation, make sure that the ionizer is on before the EVM is removed from the
protective packaging. Electrostatic smock and safety glasses should also be worn. Because voltages in
excess of 400 V may be present on the EVM, do not connect the ground strap from the smock to the
bench. If testing with a load, set the electronic load to Constant Current Mode.
2. Power Up: in Self Bias Mode
(a) Connect the equipment as shown in Figure 3.
(b) Set the electronic load to 2 A.
(c) S1 to the ‘off’ position, switch toggle pointed to the heatsink as shown in Figure 6.
(d) Set S2 to the 'on' position, switch toggle pointed away from the heatsink as shown in Figure 7.
(e) Use the link to connect pin 2 to pin 3 of J4.
(f) Turn on the fan.
(g) Set the AC source voltage between 90 VAC and 264 VAC.
(h) Turn the AC source on.
(i) Verify that the output of the module is within regulation. Startup time may be several seconds.
Figure 5. J4 Link Setting for Self Bias Mode
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Test Setup
Figure 6. S1 and S2 Settings for PFC and LLC Off
(Aux Bias Mode only)
Figure 7. S1 and S2 Settings for PFC and LLC on
(Aux Bias Mode and Self Bias Mode)
Figure 8. S1 and S2 Settings for PFC Stage On, LLC Stage Off
(Aux Bias Mode only)
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Test Setup
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5.4 Power-Up/Power-Down Procedure: Aux Bias Mode
The following test procedure is recommended primarily for power up and shutting down the evaluation
module in Aux Bias Mode. Never leave a powered EVM unattended for any length of time. Also, the unit
should never be handled while power is applied to it. The UCC29950EVM-631 is set at the factory to
operate in Aux Bias Mode, with an external bias supply as shown in Figure 4. Operation in Self Bias
Mode, without an external bias supply is described in Section 5.3.
WARNING
There are very high voltages present on the EVM. Some
components reach temperatures above 50°C. Precautions must be
taken when handling the board. Never operate the UCC29950EVM-
631 without the fan running. Always make certain the bulk
capacitor (C6) has completely discharged prior to handling the
EVM.
1. Working at an ESD workstation, make sure that the ionizer is on before the EVM is removed from the
protective packaging. Electrostatic smock and safety glasses should also be worn. Because voltages in
excess of 400 V may be present on the EVM, do not connect the ground strap from the smock to the
bench. If testing with a load, set the electronic load to Constant Current Mode.
2. Power Up in Aux Bias Mode:
(a) Connect the equipment as shown in Figure 4.
(b) Set the electronic load to 2 A.
(c) Set the two switches, S1 and S2 to the 'off' position, switch toggle pointed to the heatsink as shown
in Figure 6.
(d) Check that the link connects pin 1 to pin 2 of J4.
(e) Turn on the 13-V bias supply.
(f) Set S2 to the 'on' position. switch toggle pointed away from the heatsink as shown in Figure 7.
(g) Turn on the fan.
(h) Set the AC source voltage between 90 VAC and 264 VAC .
(i) Turn the AC source on.
(j) Verify that the output of the module is within regulation.
NOTE: The Power Up procedure given above will always work. However, providing that the bias
supply has not been interrupted and S2 is in the 'on' position, the EVM will power up and
down as the AC source is turned on and off.
5.5 Equipment Shutdown
1. To quickly discharge the output capacitors, make sure there is a load greater than 0 A on the EVM.
2. Turn off the AC source.
3. Turn off the bias source if operating in Aux Bias Mode.
4. Using the voltmeter at V2, check that the voltage on the bulk capacitor, C6, has fallen to a safe level.
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UCC9950EVM-631 Feature Testing
6 UCC9950EVM-631 Feature Testing
6.1 AC Input Range 90 VAC to 264 VAC
The EVM may be operated in both Self Bias and Aux Bias Modes and at any load over the full universal
input voltage range, from 90 VAC to 264 VAC. The EVM turns on at a voltage slightly below 90 VAC, typically
at around 80 V. PFC switching action halts if the line voltage gets too low, typically below 75 V. It is safe
to apply up to 300 VAC to the input but THD increases significantly due to direct conduction into the bulk
capacitor at the peak of the line cycle.
6.2 Load Regulation of the DC Output
Use the test set up shown in shown in Figure 3 (Self Bias Mode) and Figure 4 (Aux Bias Mode) to test the
load regulation of the EVM.
1. Set the AC source to a constant voltage between 90 VAC and 264 VAC.
2. Vary the load so that the output current varies from 1 A up to 25 A, as measured on DMM A1.
3. Observe that the output voltage on DMM V1 remains within 0.1% of the full-load regulation value.
6.3 Line Regulation of the DC Output
Use the test set up shown in Figure 3 (Self Bias Mode) and Figure 4 (Aux Bias Mode) to test the Line
regulation of the EVM.
1. Set the load to sink the full-load current, 25 A.
2. Vary the AC source from 90 VAC to 264 VAC.
3. Observe that the output voltage on DMM V1 stays within 0.1% of the output voltage regulation value.
6.4 Power Factor
The power meter may be used to monitor the power factor (PF) of the line current and the input power
taken by the EVM. The PF is very close to 1.0 under most operating conditions. At very light loads, where
the EVM enters a burst mode of operation the PF is lower.
6.5 Efficiency
Use the output current (A1) and output voltage (V1) meters to calculate the output power and hence the
overall unit efficiency over a wide range of operating conditions. The EVM has a very high end-to-end full-
load efficiency of more than 90% at 230 V and more than 88% at 115 V. Typical results are shown in
Figure 12 and Figure 13.
6.6 Low Start-Up Current, with Integrated High-Voltage Start-Up Control
In Self Bias Mode only. Observe the VCC startup voltage waveform at TP9 during a Self-Bias startup. The
capacitor is initially charged to approximately 18 V through Q4 and the SUFS pin of the UCC29950. At
that point Q4 is turned off and the EVM starts. The action of turning Q4 off eliminates the losses in the
startup circuit and this helps to reduce the no-load power dissipation of the system.
15
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6.7 On/Off Control of PFC Stage and PFC/LLC Stages
In Aux Bias Mode only. When the EVM is operating in Aux Bias Mode the switches S1 and S2 may be
used to turn the LLC stage off and on or turn both the LLC and PFC stages off and on. Add a ‘scope
probe to the MD_SEL/PS_ON pin at TP15. Get the EVM operating normally in Aux Bias Mode as
described earlier, TP15 should be at 0 V and then go to VCC when S2 is put in the ‘on’ position, see
Figure 7. Then turn both stages off by flipping S2 back into the ‘off’ position, see Figure 6. TP15 should go
from VCC to 0 V. Then, turn the PFC stage alone on by flipping S1 into the ‘on’ position, see Figure 8
TP15 should go to approximately VCC/2. Observe that the LLC stage has stopped (VOUT = 0 V) and the
PFC stage is running (V2 monitoring the bulk capacitor). Flip S2 into the ‘on’ position again (S1 may be
left in the ‘on’ position), TP 15 should go to VCC and the LLC stage will start. This feature allows the user
additional flexibility in system design. Be careful when operating these switches because hazardous
voltages exist on the PCB.
6.8 Three Level LLC Over-Current Protection for Loads with High-Peak Power
Requirements
The UCC29950 includes a three level over current protection feature on the LLC stage which allows for
short term overloads beyond the normal current limit point (28A).
Increase the load on the output slowly, the over current protection will operate at about 28 A. The OCP
feature stops the LLC operating and then tries to restart it after about 1 second. The 28 A overload
protection is triggered by the OCP1 level and will trip after a nominal 52 ms delay.
Set the electronic load to apply an overload load transient (25 A to 33 A to 25 A) for a short period (20
ms). This will not trip the over current protection. Increase the time period incrementally until the OCP1
over current protection is activated.
The second OCP level (OCP2) operates at about 42 A after 10 ms. This should be observed in the same
way as the OCP1. Set the load to apply an overload load transient (25 A to 50 A to 25 A) for a short
period 5 ms. This will not trip the over current protection. Increase the time period incrementally until the
over current protection is activated as before.
The third OCP level (OCP3) provides protection against output short circuits.
6.9 Short Circuit Protection
The UCC29950 also includes short circuit protection which operates immediately the signal at the LLC_CS
pin exceeds 900 mV (OCP3). Test this by applying a short circuit to the EVM output terminals, the LLC
stage stops immediately. The best way to observe this is by monitoring one of the LLC gate drive signals
at TP12 and the LLC_CS signal at TP16. Switching action will stop immediately if the signal at TP16
exceeds 900 mV.
6.10 Current Sense Inputs for PFC Overload Protection
The PFC stage current sense input is used as an input to the control loop in the UCC29950. The
UCC29950 uses the PFC_CS signal to shape the input current during the line cycle. It also has a current
and power limiting function as explained in the ‘PFC Stage Current Sensing‘ and ‘Input Power Limit’
sections of the data sheet. The operating point for both these features is set at a level which is higher than
the point at which the LLC OCP protections operate so they are not normally triggered.
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UCC9950EVM-631 Feature Testing
6.11 Line Brownout Protection
The UCC29950 includes brownout protection which operates if the line voltage falls below the minimum
operating voltage, typically 75 VAC. The UCC29950 rides through or ignores short term interruptions of up
to approximately 32 ms.
Set the AC source so that it provides a correct line voltage then goes to 0 V for a half cycle, the EVM
operation is uninterrupted. Increase the length of the drop out, eventually the EVM will shut down (typically
32 ms), this is a non-latching shutdown so it attempts to restart after a delay of about 1 second.
Repeat this process but have the AC source drop the input voltage to a low value (60 VAC for example).
Again, the system ignores short dropouts but turns off for longer dropouts.
6.12 X-Cap Discharge Function for Reduced System Standby Power Consumption
This feature can be tested by observing the voltage across the X-Capacitor when the line is disconnected.
NOTE: Turning the output off on most AC sources sets the source to 0 V.
It is best to use a mechanical switch or relay to disconnect the line voltage from the EVM. Alternatively,
wire a suitably rated line socket and plug into the line cord and use that to disconnect the EVM. Put a
differential scope probe from TP1 to TP4.
The operation of the X-Cap feature is quite complex and is described in the ‘Active X-Cap Discharge’
section of the UCC29950 data sheet.
6.13 Output Voltage Ripple
An external 10-μF aluminum capacitor and 1-μF ceramic noise decoupling capacitor network should be
connected to the output to measure the output ripple and noise. This network may be connected across
the +VOUT and RTN terminals of J3. The loop area between the scope probe tip and ground should be
minimized for accurate ripple and noise measurements.
17
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Frequency (Hz)
Gain (dB)
Phase (°)
10 100 1000 10000
-180 -180
-140 -140
-100 -100
-60 -60
-20 -20
20 20
60 60
100 100
140 140
180 180
D001D008D002
Gain
Phase
Frequency (Hz)
Gain (dB)
Phase (°)
10 100
-40 -50
-20 0
0 50
20 100
D001D008D002
Gain
Phase
Frequency (Hz)
Gain (dB)
Phase (°)
10 100
-40 -50
-20 0
0 50
20 100
D001D008D002
Gain
Phase
Performance Data and Typical Characteristic Curves
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7 Performance Data and Typical Characteristic Curves
Figure 12 through Figure 33 present typical performance curves for the UCC9950EVM-631.
7.1 PFC Stage Loop Stability
The UCC29950 uses a new Hybrid Average Current control method. The loop compensation is
implemented digitally thus eliminating the need for external compensation components. The Bode Plots
below were taken from a typical EVM and show a loop crossover frequency of 9Hz with a phase margin of
greater than 60°.
Figure 9. PFC Loop Gain/Phase at 300 W, 115 V Figure 10. PFC Loop Gain/Phase at 300 W, 230 V
7.2 LLC Stage Loop Stability
The gain and phase characteristic of the LLC stage is dominated by the external components in the
feedback loop rather than by the UCC29950 itself. The Bode Plots below were taken from a typical EVM
and show a loop crossover frequency of approximately 1.1kHz with a phase margin of greater than 45°.
Figure 11. Gain/Phase vs. Frequency
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Load Current (A)
Efficiency (%)
0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5
80
81
82
83
84
85
86
87
88
89
90
91
D001
115 V
90 V
230 V
Load Current (A)
Efficiency (%)
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
D001
90 V
115 V
230 V
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Performance Data and Typical Characteristic Curves
7.3 Efficiency
Figure 12. UCC29950EVM-631 Typical Efficiency Figure 13. UCC29950EVM-631 Typical Light-Load
(as a function of line voltage and current) Efficiency
(as a function of line voltage and current)
The UCC29950EVM-631 also meets the requirements of 80PLUS Silver with good margin and is close to
meeting the requirements of 80PLUS Gold.
Table 3. UCC29950EVM-631, Typical Average Efficiency
VIN (V) F (Hz) % LOAD PIN (W) POUT (W) EFFICIENCY PF AVG EFF (%)
(%)
115 60 100 345.3 300.0 86.9 0.999 88.0
75 256.7 225.0 87.6 0.999
50 168.0 150.0 89.2 0.997
25 84.95 75.0 88.3 0.990
230 50 100 337.0 300.0 89.0 0.995 90.1
75 250.7 225.0 89.7 0.990
50 164.4 150.0 91.3 0.982
25 83.02 75.0 90.3 0.958
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Input Power (W)
THD (%)
30 60 90 120 150 180 210 240 270 300 330 360
2.5
5
7.5
10
12.5
15
17.5
20
22.5
25
27.5
30
D001
90 V
115 V
230 V
Performance Data and Typical Characteristic Curves
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7.4 Total Harmonic Distortion
Figure 14. UCC29950EVM-631 Total Harmonic Distortion
(as a function of line voltage and load current)
7.5 Current Harmonics
Figure 15. UCC29950EVM-631 Current Harmonics
(230-VAC, 50-Hz input, full load)
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Input Power (W)
Power Factor (PF)
0 100 200 300 400
0.95
0.96
0.97
0.98
0.99
1
D001
230 V
115 V
Input Voltage (VRMS)
Output Voltage (V)
0 50 100 150 200 250 300 350
12
12.01
12.02
12.03
D001
Output Current (A)
Output Voltage (V)
0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5
12.01
12.015
12.02
12.025
12.03
12.035
12.04
12.045
12.05
12.055
12.06
12.065
12.07
12.075
12.08
12.085
12.09
D001
230 (V)
115 (V)
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Performance Data and Typical Characteristic Curves
7.6 Line/Load Regulation
Figure 16. Line Regulation vs Input Voltage Figure 17. Load Regulation vs Output Current
7.7 Power Factor
Figure 18. Power Factor vs Input Power
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7.8 Input Current
Figure 19. UCC29950EVM-631 Input current Figure 20. UCC29950EVM-631 Input Current
(90-VAC, 60-Hz, full load, 2 A/div.) (115-VAC, 60-Hz, full load 2 A/div.)
Figure 21. UCC29950EVM-631 Input Current
(230-VAC, 50-Hz, full load 1 A/div.)
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Performance Data and Typical Characteristic Curves
7.9 Output Voltage Ripple
Figure 22. UCC29950EVM-631 VBULK Voltage Ripple Figure 23. UCC29950EVM-631 VBULK Voltage Ripple
(115-VAC, 60-Hz input, full load) (230-VAC, 50-Hz input, full load)
Figure 24. UCC29950EVM-631 Output Noise Figure 25. UCC29950EVM-631 Output Noise
(115-VAC, 60-Hz input, full load) (230-VAC, 50-Hz input, full load)
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7.10 Light-Load Performance
At light loads, typically below 1 A, the UCC29950-PWR631 EVM enters a burst mode of operation. As the
load on the power stages reduces, eventually a point is reached where the controller can no longer
maintain continuous switching operation without allowing VOUT to increase. In burst mode, the controller
does not operate continually but instead delivers short bursts of energy to the output separated by longer
intervals during which no energy transfer occurs. This allows the controller to maintain the correct average
output voltage – at the expense of an increase in output ripple. Typical output ripple performance is shown
in Figure 26 and Figure 27 below. The burst interval and the output ripple amplitude depends on whether
the EVM is operating in Aux Bias or Self Bias Mode.
Figure 26. VOUT, No Load, Aux Bias, Burst Interval is 340 Figure 27. VOUT, No Load, Self Bias, Burst Interval is 4-s
ms, ΔVOUT is 400 mV intervals, ΔVOUT = 1.5 V
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7.11 Output Noise Measurements
All output noise measurements have been taken directly at output connector J3.
Figure 28. DC Coupled, VOUT 0 A, Aux Bias Burst is Figure 29. VOUT, 1 A, Aux Bias
Approximately 8-ms Long, Burst Rep Interval is
Approximately 340 ms
Figure 30. VOUT 25 A, Aux Bias Figure 31. VOUT 25 A, Aux Bias
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Figure 32. VOUT, 1 A, Self Bias Figure 33. VOUT 25 A, Aux Bias
Table 4. No-Load Input Power
LINE BIAS MODE AUX BIAS POWER NO LOAD INPUT POWER
90 VAC Self Bias 325 mW
115 VAC Self Bias 390 mW
230 VAC Self Bias 660 mW
264 VAC Self Bias 745 mW
90 VAC Aux Bias 130 mW 254 mW + 130 mW = 384 mW
115 VAC Aux Bias 130 mW 200 mW + 130 mW = 330 mW
230 VAC Aux Bias 130 mW 160 mW + 130 mW = 290 mW
264 VAC Aux Bias 130 mW 175 mW + 130 mW = 305 mW
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EVM Assembly Drawing and PCB Layout
8 EVM Assembly Drawing and PCB Layout
Figure 34 through Figure 37 show the design of the UCC29950EVM-631 printed circuit board.
Figure 34. UCC29950EVM-631 Top Layer Assembly Drawing (top view)
Figure 35. UCC29950EVM-631 Bottom Layer Assembly Drawing (bottom view)
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Figure 36. UCC29950EVM-631 Top Copper (top view)
Figure 37. UCC29950EVM-631 Bottom Copper (bottom view)
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EVM Assembly Drawing and PCB Layout
Figure 38. Components Assembly
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List of Materials
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9 List of Materials
Table 5 lists the UCC29950EVM-631 components according to the schematic shown in Figure 1 and
Figure 2.
Table 5. UCC29950EVM-631 List of Materials
QTY REF DES DESCRIPTION MFR PART NUMBER
2 C1, C2 Capacitor, film, 0.47 µF, 275 V, ±20%, TH Panasonic ECQ-U2A474ML
1 C3 Capacitor, film, 0.33 µF, 275 V, ±20%, TH Panasonic ECQ-U2A334ML
2 C4, C5 Capacitor, ceramic, 0.1 µF, 630 V, ±10%, X7R, 1812 MuRata GRM43DR72J104KW01L
1 C6 Capacitor, aluminum, 270 µF, 450 V, ±20%, TH Cornell Dubilier 380LQ271M450K022
1 C7 Capacitor, ceramic, 47 µF, 6.3 V, ±10%, X7R, 1210 MuRata GRM32ER70J476KE20L
3 C8, C27, C42 Capacitor, ceramic, 0.1 µF, 50 V, ±5%, X7R, 0805 AVX 08055C104JAT2A
2 C9, C18 Capacitor, ceramic, 1 µF, 50 V, ±10%, X7R, 0805 MuRata GRM21BR71H105KA12L
Capacitor, ceramic, 1000 pF, 250 V, ±20%, E, Disc, 8
1 C10 MuRata DE1E3KX102MA5BA01
mm x 12 mm
2 C11, C19 Capacitor, film, 0.016 µF, 630 V, ±5% Panasonic ECW-F6163JL
2 C13, C14 Capacitor, film, 0.012 µF, 800 V, ±3%, TH Panasonic ECW-H8123HA
2 C12, C32 Capacitor, ceramic, 0.1 µF, 16 V, ±10%, X7R, 0603 Kemet C0603C104K4RACTU
Vishay-
1 C15 Capacitor, film, 0.047 µF, 630 V, ±20%, TH BFC233820473
Bccomponents
1 C16 Capacitor, ceramic, 1 µF, 50 V, ±10%, X7R, 0603 Taiyo Yuden UMK107AB7105KA-T
Capacitor, aluminum, 330 µF, 16 V, ±20%, 0.014 Ω,
2 C17, C20 Nippon Chemi-Con APS-160ELL331MJC5S
TH
C21, C22, C23, Capacitor, aluminum, 1000 µF, 16 V, ±20%, 0.03 Ω,
4 Panasonic EEU-FR1C102L
C24 TH
1 C25 Capacitor, ceramic, 1 µF, 35 V, ±10%, X7R, 0805 Taiyo Yuden GMK212B7105KG-T
Capacitor, aluminum, 220 µF, 35 V, ±20%, 0.087 Ω,
1 C26 Nippon Chemi-Con EKY-350ELL221MH15D
TH
1 C29 Capacitor, ceramic, 0.047 µF, 50 V, ±10%, X7R, 0805 AVX 08055C473KAT2A
2 C33, C39 Capacitor, ceramic, 0.1 µF, 50 V, ±10%, X7R, 0603 AVX 06035C104KAT2A
2 C34, C35 Capacitor, ceramic, 10 µF, 35 V, ±10%, X7R, 1206 Taiyo Yuden GMK316AB7106KL
3 C36, C37, C38 Capacitor, ceramic, 470 pF, 50 V, ±10%, X7R, 0603 Kemet C0603C471K5RACTU
1 C40 Capacitor, ceramic, 0.1 µF, 25 V, ±10%, X7R, 0603 AVX 06033C104KAT2A
1 C41 Capacitor, ceramic, 1000 pF, 50 V, ±10%, X7R, 0603 Kemet C0603C102K5RACTU
Capacitor, ceramic, 10 µF, 50 V, ±10%, X5R, CGA5L3X5R1H106K160
2 C43, C47 TDK
1206_190 AB
Capacitor, ceramic, 100 pF, 50 V, ±1%, C0G/NP0,
2 C44, C45 AVX 06035A101FAT2A
0603
Capacitor, ceramic, 100 pF, 50 V, ±1%, C0G/NP0,
1 C46 AVX 06035A101FAT2A
0603
1 C48 Capacitor, ceramic, 0.01 µF, 50 V, ±10%, X7R, 0603 Kemet C0603C103K5RACTU
Capacitor, ceramic, 1000 pF, 25 V, ±5%, C0G/NP0,
0 C28 MuRata GRM1885C1E102JA01D
0603
0 C30 Capacitor, ceramic, 47 pF, 50V, ±5%, C0G/NP0, 0603 AVX 06035A470JAT2A
0 C31 Capacitor, aluminum, 10 µF, 35V, ±20%, TH Nichicon UVR1V100MDD1TA
Vishay-
1 D1 Diode, switching-bridge, 600 V, 3 A, TH 1N5406
Semiconductor
Micro Commercial
1 D2 Diode, switching-bridge, 420 V, 8 A, TH GBU8J-BP
Components
1 D3 Diode, Schottky, 600 V, 4 A, TH Cree C3D04060A
Fairchild
1 D4 Diode, P-N, 1000 V, 1 A, TH IN4007
Semiconductor
1 D10 Diode, Schottky, 40 V, 0.38 A, SOD-523 Diodes Inc. ZLLS350TA
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List of Materials
Table 5. UCC29950EVM-631 List of Materials (continued)
QTY REF DES DESCRIPTION MFR PART NUMBER
Vishay-
1 D6 Diode, ultrafast, 600 V, 1.5 A, SMA BYG20J-E3/TR
Semiconductor
2 D7, D8 Diode, Schottky, 45 V, 20 A, TH ST Microelectronics STPS40L45CT
1 D11 Diode, Zener, 18 V, 500 mW, SOD-123 Diodes Inc. MMSZ5248B-7-F
2 D12, D13 Diode, switching, 100 V, 0.215 A, SOT-23 NXP Semiconductor BAV99,215
1 D14 Diode, Zener, 12 V, 300 mW, SOD-323 NXP Semiconductor BZX384-C12,115
Diode, fast rectifier, 800 V, 0.2 A, TVS, 1.7 mm x 0.7
2 D15, D16 Panasonic DA2JF8100L
mm x 1.25 mm
1 D20 Diode, ultrafast, 75 V, 0.3 A, SOT-23 Diodes Inc. BAS16-7-F
D5, D9, D18,
2 Diode, ultrafast, 100 V, 0.25 A, SOD-323 NXP Semiconductor BAS316,115
D19
1 F1 Fuse, 8 A, 250 V, TH Littelfuse 0216008.MXESPP
H1, H2, H3,
9 H4, H5, H6, Machine screw, pan, phillips, M3 x 5 mm Keystone 29311
H7, H8, H9
H10, H11, H12,
8 H13, H14, H15, Hex standoff #6-32 NYLON 1 inch x 1/2 inch Keystone 4824
H16, H17
H18, H19, H20,
8 H21, H22, H23, Standoff, Hex, 0.5 inch long #6-32 Nylon Keystone 1903C
H24, H25
H29, H30, H31,
7 H32, H33, H34, MAX clip Aavid Thermalloy MAX01NG
H35
HS1, HS2,
3 Heatsink vert max clip, black, 4.25 inches Aavid 782653B04250G
HS3 On-Shore
2 J1, J2 Terminal block 5.08 mm vertical 3 position, th ED120/3DS
Technology
On-Shore
1 J3 Terminal block, 4 x 1, 5.08 mm, TH ED120/4DS
Technology
Header, TH, 100 mil, 1 x 3, gold plated, 230 mil above Sullins Connector
1 J4 PBC03SAAN
insulator Solutions
On-Shore
1 J5 Terminal block 5.08mm vertical 2 position, th ED120/2DS
Technology
1 J6 Header (shrouded), 100 mil, 5 x 2, gold, TH TE Connectivity 5103308-1
Wurth Elektronik
1 L1 Coupled inductor, 2.2 mH, 8 A, 0.014 Ω, ±30%, TH 7448258022
eiSos
1 L2 Inductor, ?, , A, TH Renco Electronics RLTI-1108
1 L3 Inductor, shielded, ?, 55 µH, A, 0.065 Ω, TH Vitec Corporation 75PR8106
Inductor, shielded, powdered iron, 1.5 µH, 31 A,
1 L4 Vishay-Dale IHLP6767GZER1R5M11
0.00162 Ω, SMD
Thermal transfer printable labels, 0.65 inch wide x 0.20
1 LBL1 Brady THT-14-423-10
inch high, - 10,000 per roll
1 D17 LED, green, TH Everlight HLMP1523
3 Q1, Q2, Q3 MOSFET, N-channel, 650 V, 25 A, TO-262 AOS AOW25S65
Infineon
1 Q4 MOSFET, N-channel, 600 V, 0.021 A, SOT-23 BSS126 H6906
Technologies
1 R1 Resistor, 10.0 Ω, 1%, 0.25 W, 1206 Vishay-Dale CRCW120610R0FKEA
CRCW20103R30JNEF
2 R2, R3 Resistor, 3.3 Ω, 5%, 1 W, 2010 Vishay Dale and
CRCW20101R00JNEF
Stackpole
3 R4, R5, R6 Resistor, 0.1 Ω, 1%, 2 W, 2512 CSRN2512FTR100
Electronics Inc
31
SLUUB69A–March 2015–Revised March 2015 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module
Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated
List of Materials
www.ti.com
Table 5. UCC29950EVM-631 List of Materials (continued)
QTY REF DES DESCRIPTION MFR PART NUMBER
Panasonic
3 R7, R8, R9 Resistor, 1.20 Ω, 1%, 1 W, 2512 Electronic ERJ-1TRQF1R0U
Components
2 R10, R17 Resistor, 3.30 Ω, 1%, 0.25 W, 1206 Panasonic ERJ-8RQF3R3V
2 R11, R13 Resistor, 51.1 Ω, 1%, 0.25 W, 1206 Vishay-Dale CRCW120651R1FKEA
R12, R18, R25,
5 Resistor, 10.0 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW060310K0FKEA
R41, R62
1 R14 Resistor, 10.0 MΩ, 1%, 0.1 W, 0603 Yageo America RC0603FR-0710ML
1 R15 Resistor, 1.10 MΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW06031M10FKEA
1 R22 Resistor, 5.10 kΩ, 0.5%, 0.1 W, 0805 Susumu Co Ltd RR1220P-512-D
1 R24 Resistor, 49.9 Ω, 1%, 0.25 W, 1206 Panasonic ERJ-8ENF49R9V
1 R26 Resistor, 18.0 kΩ, 1%, 0.1 W, 0603 Yageo America RC0603FR-0718KL
1 R31 Resistor, 0 Ω, 5%, 0.125 W, 0805 Vishay-Dale CRCW08050000Z0EA
1 R33 Trimmer, 10 kΩ, 0.75 W, TH Bourns 3006P-1-103LF
R35, R36, R37,
4 Resistor, 0 Ω, 5%, 0.25 W, 1206 Vishay-Dale CRCW12060000Z0EA
R48
R38, R39, R40,
6 Resistor, 3.09 MΩ, 1%, 0.25 W, 1206 Vishay-Dale CRCW12063M09FKEA
R49, R50, R51
3 R42, R43, R44 Resistor, 10.0 MΩ, 1%, 0.25 W, 1206 Vishay-Dale CRCW120610M0FKEA
1 R45 Resistor, 75.0 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW060375K0FKEA
1 R46 Resistor, 3.3 MΩ, 5%, 0.1 W, 0603 Vishay-Dale CRCW06033M30JNEA
3 R47, R54, R59 Resistor, 100 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW0603100KFKEA
2 R52, R53 Resistor, 470 Ω, 1%, 0.1 W, 0603 Yageo America RC0603FR-07470RL
1 R55 Resistor, 2.21 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW06032K21FKEA
1 R56 Resistor, 3.32 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW06033K32FKEA
1 R57 Resistor, 1.00 Ω, 1%, 0.125 W, 0805 Panasonic ERJ-6RQF1R0V
1 R58 Resistor, 2.2 Ω, 5%, 0.125 W, 0805 Vishay-Dale CRCW08052R20JNEA
1 R60 Resistor, 0 Ω, 5%, 0.25 W, 1206 Vishay-Dale CRCW12060000Z0EA
0 R20, R32 Resistor, 5.10 kΩ, 1%, 0.1 W, 0603 Yageo America RC0603FR-075K1L
0 R21 Resistor, 100 Ω, 1%, 0.1 W, 0603 Vishay-Dale CRCW0603100RFKEA
0 R27 Resistor, 39.2 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW060339K2FKEA
1 R16, R61 Resistor, 1.00 kΩ, 1%, 0.25 W, 1206 Vishay-Dale CRCW12061K00FKEA
R19, R29, R30,
2 Resistor, 0 Ω, 5%, 0.1 W, 0603 Vishay-Dale CRCW06030000Z0EA
R34
1 R23, R28 Resistor, 1.20 kΩ, 1%, 0.1 W, 0603 Yageo America RC0603FR-071K2L
1 RT1 Thermistor NTC, 5 Ω, 25%, Disc, 220 mm x 770 mm GE Sensing CL-40
Sullins Connector
2 SH1, SH2 Shunt, 100 mil, flash gold, black SPC02SYAN
Solutions
SIL1, SIL2,
SIL3, SIL4,
8 Silcon thermal pad Bergquist Company SP900S-0.009-00-114
SIL5, SIL6,
SIL7, SIL8
2 S1, S2, S3 Switch, toggle, SPST, 1 position, TH E-Switch 200USP9T1A1M2RE
1 T1 LLC transformer, 280 µH, TH Renco Electronics RLTI-1115
2 TP1, TP4 Test point, multipurpose, yellow, TH Keystone 5014
32 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module SLUUB69A–March 2015–Revised March 2015
Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
www.ti.com
Revision History
Table 5. UCC29950EVM-631 List of Materials (continued)
QTY REF DES DESCRIPTION MFR PART NUMBER
TP2, TP3, TP5,
TP6, TP7,
TP11, TP12,
TP13, TP14,
TP15, TP16,
TP17, TP18,
25 Test point, multipurpose, white, TH Keystone 5012
TP20, TP21,
TP22, TP23,
TP24, TP25,
TP26, TP29,
TP30, TP31,
TP32, TP33
TP8, TP10,
3 Test point, compact, black, TH Keystone 5006
TP28
1 TP9 Test point, compact, red, TH Keystone 5005
1 TP19 Test point, multipurpose, red, TH Keystone 5010
1 TP27 Test point, multipurpose, black, TH Keystone 5011
Mini-flat half pitch package, general purpose
1 U3, U4 Avago ACPL-217-56AE
photocoupler, SMT
FID1, FID2,
0 Fiducial mark. There is nothing to buy or mount. N/A N/A
FID3
1 PCB1 Printed Circuit Board Any UCC29950EVM-631
4 A/8 A Single Channel High-Speed Low-Side Gate
1 U1 TI UCC27511DBV
Drivers
1 U2 High-Speed Low-Side Gate Driver Device, D0014A Texas Instruments UCC27714D14
1 U5 Precision Programmable Reference, DBZ0003A Texas Instruments TL431AIDBZ
Continuous-Conduction-Mode Power Factor Correction
1 U6 and LLC Resonant Converter Combo Controller, Texas Instruments UCC29950D
D0016A
Single Output LDO, 100 mA, Adjustable 1.2 to 18.5 V
Output, 3 to 60 V Input, with Enable and Power Good,
1 U7 Texas Instruments TPS7A1601DGNT
8-pin MSOP (DGN), -40 to 125 degC, Green (RoHS &
no Sb/Br)
1 V1 Varistor, 300 V, 1.75 kA, 7 MM radial, TH EPCOS Inc B72207S2301K101
Revision History
Changes from Original (March 2015) to A Revision ....................................................................................................... Page
• Added Line/Load Regulation images.................................................................................................. 21
• Added Power Factor image............................................................................................................. 21
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
33
SLUUB69A–March 2015–Revised March 2015 Revision History
Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated
STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES
1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or
documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein.
Acceptance of the EVM is expressly subject to the following terms and conditions.
1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility
evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not
finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For
clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions
set forth herein but rather shall be subject to the applicable terms and conditions that accompany such Software
1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,
or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production
system.
2Limited Warranty and Related Remedies/Disclaimers:
2.1 These terms and conditions do not apply to Software. The warranty, if any, for Software is covered in the applicable Software
License Agreement.
2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM
to User. Notwithstanding the foregoing, TI shall not be liable for any defects that are caused by neglect, misuse or mistreatment
by an entity other than TI, including improper installation or testing, or for any EVMs that have been altered or modified in any
way by an entity other than TI. Moreover, TI shall not be liable for any defects that result from User's design, specifications or
instructions for such EVMs. Testing and other quality control techniques are used to the extent TI deems necessary or as
mandated by government requirements. TI does not test all parameters of each EVM.
2.3 If any EVM fails to conform to the warranty set forth above, TI's sole liability shall be at its option to repair or replace such EVM,
or credit User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the
warranty period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to
repair or replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall
be warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day
warranty period.
3Regulatory Notices:
3.1 United States
3.1.1 Notice applicable to EVMs not FCC-Approved:
This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit
to determine whether to incorporate such items in a finished product and software developers to write software applications for
use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless
all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause
harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is
designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of
an FCC license holder or must secure an experimental authorization under part 5 of this chapter.
3.1.2 For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:
CAUTION
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.
FCC Interference Statement for Class A EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.
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FCC Interference Statement for Class B EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
3.2 Canada
3.2.1 For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210
Concerning EVMs Including Radio Transmitters:
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
Concernant les EVMs avec appareils radio:
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
Concerning EVMs Including Detachable Antennas:
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.
Concernant les EVMs avec antennes détachables
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le
présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le
manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de
l'émetteur
3.3 Japan
3.3.1 Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 日本国内に
輸入される評価用キット、ボードについては、次のところをご覧ください。
http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page
3.3.2 Notice for Users of EVMs Considered “Radio Frequency Products” in Japan: EVMs entering Japan may not be certified
by TI as conforming to Technical Regulations of Radio Law of Japan.
If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required by Radio Law of
Japan to follow the instructions below with respect to EVMs:
1. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal
Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for
Enforcement of Radio Law of Japan,
2. Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to
EVMs, or
3. Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note
that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.
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【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて
いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの
措置を取っていただく必要がありますのでご注意ください。
1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用
いただく。
2. 実験局の免許を取得後ご使用いただく。
3. 技術基準適合証明を取得後ご使用いただく。
なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。
上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ
ンスツルメンツ株式会社
東京都新宿区西新宿６丁目２４番１号
西新宿三井ビル
3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ
い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
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4EVM Use Restrictions and Warnings:
4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT
LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling
or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information
related to, for example, temperatures and voltages.
4.3 Safety-Related Warnings and Restrictions:
4.3.1 User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user
guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and
customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input
and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or
property damage. If there are questions concerning performance ratings and specifications, User should contact a TI
field representative prior to connecting interface electronics including input power and intended loads. Any loads applied
outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible
permanent damage to the EVM and/or interface electronics. Please consult the EVM user guide prior to connecting any
load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative.
During normal operation, even with the inputs and outputs kept within the specified allowable ranges, some circuit
components may have elevated case temperatures. These components include but are not limited to linear regulators,
switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the
information in the associated documentation. When working with the EVM, please be aware that the EVM may become
very warm.
4.3.2 EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the
dangers and application risks associated with handling electrical mechanical components, systems, and subsystems.
User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,
affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic
and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely
limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and
liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or
designees.
4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,
state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all
responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and
liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local
requirements.
5. Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate
as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as
accurate, complete, reliable, current, or error-free.
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6. Disclaimers:
6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY WRITTEN DESIGN MATERIALS PROVIDED WITH THE EVM (AND THE
DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL FAULTS." TI DISCLAIMS ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY
THIRD PARTY PATENTS, COPYRIGHTS, TRADE SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS.
6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS AND
CONDITIONS SHALL BE CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY
OTHER INDUSTRIAL OR INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD
PARTY, TO USE THE EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY
INVENTION, DISCOVERY OR IMPROVEMENT MADE, CONCEIVED OR ACQUIRED PRIOR TO OR AFTER DELIVERY OF
THE EVM.
7. USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS
LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,
EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY
HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS AND CONDITIONS. THIS OBLIGATION
SHALL APPLY WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY
OTHER LEGAL THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED.
8. Limitations on Damages and Liability:
8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE,
INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE
TERMS ANDCONDITIONS OR THE USE OF THE EVMS PROVIDED HEREUNDER, REGARDLESS OF WHETHER TI HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED
TO, COST OF REMOVAL OR REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES, RETESTING, OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS,
LOSS OF SAVINGS, LOSS OF USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL
BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED.
8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY WARRANTY OR OTHER OBLIGATION
ARISING OUT OF OR IN CONNECTION WITH THESE TERMS AND CONDITIONS, OR ANY USE OF ANY TI EVM
PROVIDED HEREUNDER, EXCEED THE TOTAL AMOUNT PAID TO TI FOR THE PARTICULAR UNITS SOLD UNDER
THESE TERMS AND CONDITIONS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE CLAIMED. THE EXISTENCE
OF MORE THAN ONE CLAIM AGAINST THE PARTICULAR UNITS SOLD TO USER UNDER THESE TERMS AND
CONDITIONS SHALL NOT ENLARGE OR EXTEND THIS LIMIT.
9. Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s)
will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in
a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable
order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s),
excluding any postage or packaging costs.
10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas,
without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to
these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas.
Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief
in any United States or foreign court.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2015, Texas Instruments Incorporated
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IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
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Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
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Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
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TI is not responsible or liable for any such statements.
Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
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of any TI components in safety-critical applications.
In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.
No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.
Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and
regulatory requirements in connection with such use.
TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of
non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.
Products Applications
Audio www.ti.com/audio Automotive and Transportation www.ti.com/automotive
Amplifiers amplifier.ti.com Communications and Telecom www.ti.com/communications
Data Converters dataconverter.ti.com Computers and Peripherals www.ti.com/computers
DLP® Products www.dlp.com Consumer Electronics www.ti.com/consumer-apps
DSP dsp.ti.com Energy and Lighting www.ti.com/energy
Clocks and Timers www.ti.com/clocks Industrial www.ti.com/industrial
Interface interface.ti.com Medical www.ti.com/medical
Logic logic.ti.com Security www.ti.com/security
Power Mgmt power.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense
Microcontrollers microcontroller.ti.com Video and Imaging www.ti.com/video
RFID www.ti-rfid.com
OMAP Applications Processors www.ti.com/omap TI E2E Community e2e.ti.com
Wireless Connectivity www.ti.com/wirelessconnectivity
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