Data Sheet
May 4, 2012
12V Mega TLynxTM : Non-Isolated DC-DC Power Modules:
6.0Vdc – 14Vdc input; 0.8 to 3.63Vdc Output; 30A Output Current
* UL is a registered trademark of Underwriters Laboratories, Inc.
† CSA is a registered trademark of Canadian Standards Association.
‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards
Document No: DS09-003 ver. 1.13
PDF Name: APTS030A0X3_ds.pdf
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to ROHS EU Directive 2002/95/EC
with lead solder exemption (non-Z versions)
Compliant to IPC-9592 (September 2008),
Category 2, Class II
Delivers up to 30A of output current
High efficiency: 92.9% @ 3.3V full load
(VIN=12Vdc)
Input voltage range from 6 to 14Vdc
• Output voltage programmable from 0.8 to
3.63Vdc
Small size and low profile:
33.0 mm x 13.46 mm x 10.00 mm
(1.30 in. x 0.53 in. x 0.39 in.)
Monotonic start-up
Startup into pre-biased output
Output voltage sequencing (EZ-SEQUENCE TM)
Remote On/Off
Remote Sense
Over current and Over temperature protection
Option- Parallel operation with active current
sharing
Wide operating temperature range (-40°C to
85°C)
UL* 60950 Recognized, CSA† C22.2 No.
60950-00 Certified, and VDE‡ 0805 (EN60950-1
3rd edition) Licensed
ISO** 9001 and ISO 14001 certified
manufacturing facilities
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Description
The 12V Mega TLynxTM power modules are non-isolated dc-dc converters that can deliver up to 30A of output
current. These modules operate over a wide range of input voltage (VIN = 6Vdc-14Vdc) and provide a precisely
regulated output voltage from 0.8Vdc to 3.63Vdc, programmable via an external resistor. Features include remote
On/Off, adjustable output voltage, over current and over temperature protection, output voltage sequencing and
paralleling with active current sharing (-P versions). A new feature, the Tunable LoopTM, allows the user to optimize
the dynamic response of the converter to match the load with reduced amount of output capacitance leading to
savings on cost and PWB area
TRIM
VOUT
SENSE
GND
CTUNE
RTUNE
RTrim
VIN
Co
Cin
Vin+ Vout+
ON/OFF
MODULE
RoHS Compliant
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 2
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect the device reliability.
Parameter Device Symbol Min Max Unit
Input Voltage
Continuous All VIN -0.3 15 Vdc
Sequencing pin voltage All VsEQ -0.3 15 Vdc
Operating Ambient Temperature All TA -40 85 °C
(see Thermal Considerations section)
Storage Temperature All Tstg -55 125 °C
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter Device Symbol Min Typ Max Unit
Operating Input Voltage All VIN 6.0 12 14 Vdc
Maximum Input Current All IIN,max 19 Adc
(VIN= VIN,min , VO= VO,set, IO=IO, max)
Inrush Transient All I2 t 1
A2 s
Input No Load Current VO,set = 0.8 Vdc IIN,No load 91 mA
(VIN = 12.0Vdc, IO = 0, module enabled) VO,set = 3.3Vdc IIN,No load 265 mA
Input Stand-by Current All IIN,stand-by 20 mA
(VIN = 12.0Vdc, module disabled)
Input Reflected Ripple Current, peak-to-
peak
(5Hz to 20MHz, 1μH source impedance;
VIN=6.0V to 14.0V, IO= IOmax ; See Figure 1)
All 100 mAp-p
Input Ripple Rejection (120Hz) All 50 dB
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 3
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set-point All VO, set -1.5 ⎯ +1.5 % VO, set
(VIN=VIN,nom, IO=IO, nom, Tref=25°C)
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life) All VO, set –3.0 ⎯ +3.0 % VO, set
Adjustment Range
Selected by an external resistor All 0.8 3.63 Vdc
Output Regulation
Line (VIN=VIN, min to VIN, max) All
⎯ ⎯ 10 mV
Load (IO=IO, min to IO, max) All
⎯ ⎯ 10 mV
Temperature (Tref=TA, min to TA, max) All
⎯ 0.5 1 % VO, set
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max
COUT = 0.1μF // 47 μF ceramic capacitors)
Peak-to-Peak (5Hz to 20MHz bandwidth) All ⎯ 50 mVpk-pk
External Capacitance1
Without the Tunable LoopTM
ESR ≥ 1 mΩ All CO, max 0 ⎯ 200 μF
With the Tunable LoopTM
ESR ≥ 0.15 mΩ All CO, max 0 ⎯ 1000 μF
ESR ≥ 10 mΩ All CO, max 0 ⎯ 10000 μF
Output Current
(VIN = 6 to 14Vdc) All Io 0 30 Adc
Output Current Limit Inception (Hiccup Mode) All IO, lim 140 % Iomax
Output Short-Circuit Current All IO, s/c ⎯ 3.5 ⎯ Adc
(VO≤250mV) ( Hiccup Mode )
Efficiency VO,set = 0.8dc η
83.0 %
VIN=12Vdc, TA=25°C VO,set = 1.2Vdc η
87.1 %
IO=IO, max , VO= VO,set V
O,set = 1.8Vdc η
90.1 %
V
O,set = 2.5Vdc η
91.8 %
V
O,set = 3.3Vdc η
92.9 %
Switching Frequency, Fixed All fsw ⎯ 300 ⎯ kHz
General Specifications
Parameter Min Typ Max Unit
Calculated MTBF (VIN=12V, VO=2.5Vdc, IO= 0.8IO, max,
TA=40°C, 200LFM) Per Telcordia Issue 2 Method 1 Case 3 4,443,300 Hours
Weight ⎯ 7.04 (0.248) ⎯ g (oz.)
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 4
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter Device Symbol Min Typ Max Unit
On/Off Signal Interface
(VIN=VIN, min to VIN, max ; open collector or equivalent,
Signal referenced to GND)
Logic High (On/Off pin open – Module OFF)
Input High Current All IIH 25 ⎯ 200 µA
Input High Voltage All VIH 3.0 ⎯ VIN, max V
Logic Low (Module ON)
Input Low Current All IIL ⎯ ⎯ 200 µA
Input Low Voltage All VIL -0.3 ⎯ 1.2 V
Turn-On Delay and Rise Times
(VIN=VIN, nom, IO=IO, max , VO to within ±1% of steady state)
Case 1: On/Off input is enabled and then
input power is applied (delay from instant at
which VIN = VIN, min until Vo = 10% of Vo, set)
All Tdelay ― 2.5 5 msec
Case 2: Input power is applied for at least one second and
then the On/Off input is enabled (delay from instant at which
Von/Off is enabled until Vo = 10% of Vo, set)
All Tdelay ― 2.5 5 msec
Output voltage Rise time (time for Vo to rise from
10% of Vo, set to 90% of Vo, set)
All Trise 2 10 msec
Output voltage overshoot 3.0 % VO, set
IO = IO, max; VIN, min – VIN, max, TA = 25 oC
Remote Sense Range All ⎯ ⎯ 0.5 V
Over temperature Protection All Tref ⎯ 125 ⎯ °C
(See Thermal Consideration section)
Sequencing Slew rate capability All dVSEQ/dt — 2 V/msec
(VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo)
Sequencing Delay time (Delay from VIN, min
to application of voltage on SEQ pin) All TsEQ-delay 10 msec
Tracking Accuracy Power-up (2V/ms) All VSEQ –Vo 100 200 mV
Power-down (1V/ms) VSEQ –Vo 200 400 mV
(VIN, min to VIN, max; IO, min - IO, max VSEQ < Vo)
Input Undervoltage Lockout
Turn-on Threshold All 5.5 Vdc
Turn-off Threshold All 5.0 Vdc
Forced Load Share Accuracy -P ⎯ 10 % Io
Number of units in Parallel -P 5
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 5
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 0.8V out and 25oC.
EFFICIENCY, η (%)
70
75
80
85
90
95
0 5 10 15 20 25 30
Vin=14V
Vin=6V
Vin=12V
OUTPUT CURRENT, Io (A)
0
5
10
15
20
25
30
35
35 45 55 65 75 85
0.5m/s
(100LFM)
1m/s
(200LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 1. Converter Efficiency versus Output Current. Figure 4. Derating Output Current versus Ambient
Temperature and Airflow at 12V in.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT
CURRENT
,
OUTPUT
VOLTAGE
IO (A) (5Adiv) VO (V) (200mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 2. Typical output ripple and noise (VIN = 12V, Io =
30A, COUT = 0.1μF // 47 μF ceramic capacitors ).
Figure 5. Transient Response to Dynamic Load
Change from 0% to 50% to 0% with VIN=12V.
OUTPUT VOLTAGE ON/OFF VOLTAGE
VO (V) (200mV/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (200mV/div) VIN (V) (5V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 3. Typical Start-up Using On/Off Voltage (Io =
Io,max).
Figure 6. Typical Start-up Using Input Voltage (VIN =
14V, Io = Io,max).
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 6
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 1.2V out and 25oC.
EFFICIENCY, η (%)
70
75
80
85
90
95
0 5 10 15 20 25 30
Vin=14V
Vin=6V
Vin=12V
OUTPUT CURRENT, Io (A)
0
5
10
15
20
25
30
35
35 45 55 65 75 85
NC
0.5m/s
(100LFM)
1m/s
(200LFM)
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 7. Converter Efficiency versus Output Current. Figure 10. Output Current Derating versus Ambient
Temperature and Airflow at 12V in.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (5Adiv) VO (V) (200mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 8. Typical output ripple and noise (VIN = 12V, Io
= 30A, COUT = 0.1μF // 47 μF ceramic capacitors ).
Figure 11. Transient Response to Dynamic Load
Change from 0% to 50% to 0% with VIN=12V.
OUTPUT
VOLTAGE
ON/OFF
VOLTAGE
VO (V) (500mV/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (500mV/div) VIN (V) (5V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 9. Typical Start-up Using On/Off Voltage (Io =
Io,max).
Figure 12. Typical Start-up Using Input Voltage (VIN =
14V, Io = Io,max).
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 7
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 1.8V out and 25oC.
EFFICIENCY, η (%)
70
75
80
85
90
95
0 5 10 15 20 25 30
Vin=14V
Vin=6V
Vin=12V
OUTPUT CURRENT, Io (A)
0
5
10
15
20
25
30
35
35 45 55 65 75 85
0.5m/s
(100LFM)
1m/s
(200LFM)
1.5m/s
(300LFM)
2m/s
(400LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA
O
C
Figure 13. Converter Efficiency versus Output Current. Figure 16. Output Current Derating versus Ambient
Temperature and Airflow at 12V in.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT
CURRENT
,
OUTPUT
VOLTAGE
IO (A) (5Adiv) VO (V) (200mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 14. Typical output ripple and noise (VIN = 12V, Io
= 30A, COUT = 0.1μF // 47 μF ceramic capacitors ).
Figure 17. Transient Response to Dynamic Load
Change from 0% to 50% to 0% with VIN=12V.
OUTPUT VOLTAGE ON/OFF VOLTAGE
VO (V) (500mV/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (500mV/div) VIN (V) (5V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 15. Typical Start-up Using On/Off Voltage (Io =
Io,max).
Figure 18. Typical Start-up Using Input Voltage (VIN =
14V, Io = Io,max).
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 8
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 2.5V out and 25oC.
EFFICIENCY, η (%)
70
75
80
85
90
95
100
0 5 10 15 20 25 30
Vin=14V
Vin=6V
Vin=12V
OUTPUT CURRENT, Io (A)
0
5
10
15
20
25
30
35
35 45 55 65 75 85
NC
0.5m/s
(100LFM)
1m/s
(200LFM)
1.5m/s
(300LFM)
2m/s
(400LFM)
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 19. Converter Efficiency versus Output
Current.
Figure 22. Output Current Derating versus Ambient
Temperature and Airflow at 12V in.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (5Adiv) VO (V) (200mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 20. Typical output ripple and noise (VIN = 12V, Io
= 30A, COUT = 0.1μF // 47 μF ceramic capacitors).
Figure 23. Transient Response to Dynamic Load
Change from 0% to 50% to 0% with VIN=12V.
OUTPUT
VOLTAGE
ON/OFF
VOLTAGE
VO (V) (1V/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (1V/div) VIN (V) (5V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 21. Typical Start-up Using On/Off Voltage (Io =
Io,max).
Figure 24. Typical Start-up Using Input Voltage (VIN =
14V, Io = Io,max).
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 9
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 3.3V out and 25oC.
EFFICIENCY, η (%)
70
75
80
85
90
95
100
0 5 10 15 20 25 30
Vin=14V
Vin=6V
Vin=12V
OUTPUT CURRENT, Io (A)
0
5
10
15
20
25
30
35
020406080
2m/s
(400LFM)
0.5m/s
(100LFM)
1.5m/s
(300LFM)
1m/s
(200LFM)
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 19. Converter Efficiency versus Output
Current.
Figure 22. Output Current Derating versus Ambient
Temperature and Airflow at 12V in.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (5Adiv) VO (V) (200mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 20. Typical output ripple and noise (VIN = 12V, Io
= 30A, COUT = 0.1μF // 47 μF ceramic capacitors).
Figure 23. Transient Response to Dynamic Load
Change from 0% to 50% to 0% with VIN=12V.
OUTPUT
VOLTAGE
ON/OFF
VOLTAGE
VO (V) (1V/div) VON/OFF (V) (2V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (1V/div) VIN (V) (5V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 21. Typical Start-up Using On/Off Voltage (Io =
Io,max).
Figure 24. Typical Start-up Using Input Voltage (VIN =
14V, Io = Io,max).
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 10
Test Configurations
TO OSCILLOSCOPE CURRENT PROBE
LTEST
1μH
BATTERY
CS 220μF
E.S.R.<0.1Ω
@ 20°C 100kHz
Min
150μF
VIN(+)
COM
NOTE: Measure input reflected ripple current with a simulated
source inductance (LTEST) of 1μH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
CIN
Figure 25. Input Reflected Ripple Current Test
Setup.
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
V
O
(+)
COM
1uF .
RESISTIVE
LOAD
SCOPE
COPPER STRIP
GROUND PLANE
10uF
Figure 26. Output Ripple and Noise Test Setup.
VO
COM
VIN(+)
COM
RLOAD
Rco ntac t Rdistribution
Rco ntac t Rdistribution
Rco ntac t
Rco ntac t
Rdistribution
Rdistribution
VIN VO
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
Figure 27. Output Voltage and Efficiency Test
Setup.
η =
VO. IO
VIN. IIN
x 100 %
Efficiency
Design Considerations
The 12V Mega TLynxTM module should be
connected to a low-impedance source. A highly
inductive source can affect the stability of the
module. An input capacitor must be placed directly
adjacent to the input pin of the module, to minimize
input ripple voltage and ensure module stability.
To minimize input voltage ripple, low-ESR ceramic
capacitors are recommended at the input of the
module. Figure 28 shows the input ripple voltage for
various output voltages at 30A of load current with
1x22 µF, 2x22 µF or 2x47 µF ceramic capacitors
and an input of 12V.
In
p
ut Ri
pp
le Volta
g
e
(
mV
p
-
p)
0
50
100
150
200
250
300
350
400
0.5 1 1.5 2 2.5 3
1x22uF
2x22uF
2x47uF
Output Voltage (Vdc)
Figure 28. Input ripple voltage for various
output voltages with 1x22 µF, 2x22 µF or 2x47
µF ceramic capacitors at the input (30A load).
Input voltage is 12V.
Output Filtering
The 12V Mega TLynx modules are designed for low
output ripple voltage and will meet the maximum
output ripple specification with no external
capacitors. However, additional output filtering may
be required by the system designer for a number of
reasons. First, there may be a need to further
reduce the output ripple and noise of the module.
Second, the dynamic response characteristics may
need to be customized to a particular load step
change.
To reduce the output ripple and improve the
dynamic response to a step load change, additional
capacitance at the output can be used. Low ESR
ceramic and polymer are recommended to improve
the dynamic response of the module. For stable
operation of the module, limit the capacitance to
less than the maximum output capacitance as
specified in the electrical specification table.
Optimal performance of the module can be
achieved by using the Tunable Loop feature
described later in this data sheet.
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 11
0
20
40
60
80
100
120
140
0.5 1 1.5 2 2.5 3
Output Voltage (Volts)
Ripple (mVp-p)
1x10uF External Cap
1x47uF External Cap
2x47uF External Cap
4x47uF External Cap
Figure 29. Output ripple voltage for various
output voltages with external 1x10 µF, 1x47 µF,
2x47 µF or 4x47 µF ceramic capacitors at the
output (30A load). Input voltage is 12V.
Safety Considerations
For safety agency approval the power module must
be installed in compliance with the spacing and
separation requirements of the end-use safety
agency standards, i.e., UL 60950-1 2nd Edition,
CSA C22.2 No. 60950-1-07, and VDE 0805-
1+A11:2009-11 (DIN EN60950-1 2nd Edition)
Licensed. The APTS030A0X were tested using a
30A, time delay fuse in the ungrounded input.
For the converter output to be considered meeting
the requirements of safety extra-low voltage
(SELV), the input must meet SELV requirements.
The power module has extra-low voltage (ELV)
outputs when all inputs are ELV. The input to these
units is to be provided with a time-delay fuse with a
maximum rating of 30A in the positive input lead.
Feature Descriptions
Remote On/Off
The 12V Mega TLynxTM power modules feature a
On/Off pin for remote On/Off operation. If not using
the On/Off pin, connect the pin to ground (the
module will be ON). The On/Off signal (Von/off) is
referenced to ground. The circuit configuration for
remote On/Off operation of the module using the
On/Off pin is shown in Figure 30.
During a Logic High on the On/Off pin (transistor Q1
is OFF), the module remains OFF. The external
resistor R1 should be chosen to maintain 3.0V
minimum on the On/Off pin to ensure that the
module is OFF when transistor Q1 is in the OFF
state. Suitable values for R1 are 4.7K for input
voltage of 12V and 3K for 5Vin. During Logic-Low
when Q1 is turned ON, the module is turned ON.
The On/Off pin can also be used to synchronize the
output voltage start-up and shutdown of multiple
modules in parallel. By connecting On/Off pins of
multiple modules, the output start-up can be
synchronized (please refer to characterization
curves). When On/Off pins are connected together,
all modules will shutdown if any one of the modules
gets disabled due to undervoltage lockout or over
temperature protection.
100K
Q1
GND
PWM Enable
ON/OFF
VIN+
ON/OFF
_
+
I
V
MODULE
R1
ON/OFF
1K
100K
Thermal SD
Figure 30. Remote On/Off Implementation
using ON/OFF .
Overcurrent Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal
current-limiting circuitry and can endure current
limiting continuously. At the point of current-limit
inception, the unit enters hiccup mode. The unit
operates normally once the output current is
brought back into its specified range.
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 12
Overtemperature Protection
To provide protection in a fault condition, the unit is
equipped with a thermal shutdown circuit. The unit
will shutdown if the overtemperature threshold of
125oC is exceeded at the thermal reference point
Tref . The thermal shutdown is not intended as a
guarantee that the unit will survive temperatures
beyond its rating. Once the unit goes into thermal
shutdown it will then wait to cool before attempting
to restart.
Input Undervoltage Lockout
At input voltages below the input undervoltage
lockout limit, the module operation is disabled. The
module will begin to operate at an input voltage
above the undervoltage lockout turn-on threshold.
Output Voltage Programming
The output voltage of the 12V Mega TLynxTM can
be programmed to any voltage from 0.8dc to
3.63Vdc by connecting a resistor (shown as Rtrim in
Figure 31) between Trim and GND pins of the
module. Without an external resistor between Trim
and GND pins, the output of the module will be
0.8Vdc. To calculate the value of the trim resistor,
Rtrim for a desired output voltage, use the following
equation:
Ω
−
=8.0
8000
Vo
Rtrim
Rtrim is the external resistor in Ω
Vo is the desired output voltage
By using a ±0.5% tolerance trim resistor with a TC
of ±100ppm, a set point tolerance of ±1.5% can be
achieved as specified in the electrical specification.
Table 1 provides Rtrim values required for some
common output voltages. The POL Programming
Tool, available at www.lineagepower.com under the
Design Tools section, helps determine the required
external trim resistor needed for a specific output
voltage.
Table 1
VO, set (V) Rtrim (KΩ)
0.8 Open
1.0 40
1.2 20
1.5 11.429
1.8 8
2.5 4.706
3.3 3.2
VO(+)
TRIM
GND
Rtr i m
LOAD
VIN
(+)
ON/OFF
SENSE
Figure 31. Circuit configuration to program
output voltage using an external resistor.
Remote Sense
The 12V Mega TLynxTM power modules have a
Remote Sense feature to minimize the effects of
distribution losses by regulating the voltage at the
SENSE pin. The voltage between the SENSE pin
and VOUT pin must not exceed 0.5V. Note that the
output voltage of the module cannot exceed the
specified maximum value. This includes the voltage
drop between the SENSE and Vout pins. When the
Remote Sense feature is not being used, connect
the SENSE pin to the VOUT pin.
Voltage Margining
Output voltage margining can be implemented in
the 12V Mega TLynxTM modules by connecting a
resistor, Rmargin-up, from the Trim pin to the ground
pin for margining-up the output voltage and by
connecting a resistor, Rmargin-down, from the Trim pin
to output pin for margining-down. Figure 32 shows
the circuit configuration for output voltage
margining. The POL Programming Tool, available
at www.lineagepower.com under the Design Tools
section, also calculates the values of Rmargin-up and
Rmargin-down for a specific output voltage and %
margin. Please consult your local Lineage Power
technical representative for additional details.
Monotonic Start-up and Shutdown
The 12V Mega TLynxTM modules have monotonic
start-up and shutdown behavior for any combination
of rated input voltage, output current and operating
temperature range.
Startup into Pre-biased Output
The 12V Mega TLynxTM modules can start into a
prebiased output as long as the prebias voltage is
0.5V less than the set output voltage. Note that
prebias operation is not supported when output
voltage sequencing is used.
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 13
Vo
MODULE
GND
Trim
Q1
Rtrim
Rmargin-up
Q2
Rmargin-down
Figure 32. Circuit Configuration for margining
Output voltage.
Output Voltage Sequencing
The 12V Mega TLynxTM modules include a
sequencing feature, EZ-SEQUENCETM that enables
users to implement various types of output voltage
sequencing in their applications. This is
accomplished via an additional sequencing pin.
When not using the sequencing feature, either tie
the SEQ pin to VIN or leave it unconnected.
When an analog voltage is applied to the SEQ pin,
the output voltage tracks this voltage until the output
reaches the set-point voltage. The final value of the
SEQ voltage must be set higher than the set-point
voltage of the module. The output voltage follows
the voltage on the SEQ pin on a one-to-one basis.
By connecting multiple modules together, multiple
modules can track their output voltages to the
voltage applied on the SEQ pin.
For proper voltage sequencing, first, input voltage is
applied to the module. The On/Off pin of the module
is left unconnected (or tied to GND for negative
logic modules or tied to VIN for positive logic
modules) so that the module is ON by default. After
applying input voltage to the module, a minimum
10msec delay is required before applying voltage
on the SEQ pin. This delay gives the module
enough time to complete its internal power-up soft-
start cycle. During the delay time, the SEQ pin
should be held close to ground (nominally 50mV ±
20 mV). This is required to keep the internal op-amp
out of saturation thus preventing output overshoot
during the start of the sequencing ramp. By
selecting resistor R1 (see fig. 33) according to the
following equation
05.0
24950
1
−
=
IN
V
R ohms,
the voltage at the sequencing pin will be 50mV
when the sequencing signal is at zero.
R1
GND
VIN+
SEQ
+
-
OUT
10K
499K
MODULE
Figure 33. Circuit showing connection of the
sequencing signal to the SEQ pin.
After the 10msec delay, an analog voltage is
applied to the SEQ pin and the output voltage of the
module will track this voltage on a one-to-one volt
bases until the output reaches the set-point voltage.
To initiate simultaneous shutdown of the modules,
the SEQ pin voltage is lowered in a controlled
manner. The output voltage of the modules tracks
the voltages below their set-point voltages on a
one-to-one basis. A valid input voltage must be
maintained until the tracking and output voltages
reach ground potential.
When using the EZ-SEQUENCETM feature to
control start-up of the module, pre-bias immunity
during start-up is disabled. The pre-bias immunity
feature of the module relies on the module being in
the diode-mode during start-up. When using the
EZ-SEQUENCETM feature, modules goes through
an internal set-up time of 10msec, and will be in
synchronous rectification mode when the voltage at
the SEQ pin is applied. This will result in the
module sinking current if a pre-bias voltage is
present at the output of the module. When pre-bias
immunity during start-up is required, the EZ-
SEQUENCETM feature must be disabled. For
additional guidelines on using the EZ-
SEQUENCETM feature please refer to Application
Note AN04-008 “Application Guidelines for Non-
Isolated Converters: Guidelines for Sequencing of
Multiple Modules”, or contact the Lineage Power
technical representative for additional information.
Active Load Sharing (-P Option)
For additional power requirements, the 12V Mega
TLynxTM power module is also available with a
parallel option. Up to five modules can be
configured, in parallel, with active load sharing.
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 14
Good layout techniques should be observed when
using multiple units in parallel. To implement forced
load sharing, the following connections should be
made:
• The share pins of all units in parallel must be
connected together. The path of these
connections should be as direct as possible.
• All remote-sense pins should be connected to
the power bus at the same point, i.e., connect
all the SENSE(+) pins to the (+) side of the bus.
Close proximity and directness are necessary
for good noise immunity
Some special considerations apply for design of
converters in parallel operation:
• When sizing the number of modules required
for parallel operation, take note of the fact that
current sharing has some tolerance. In
addition, under transient condtions such as a
dynamic load change and during startup, all
converter output currents will not be equal. To
allow for such variation and avoid the likelihood
of a converter shutting off due to a current
overload, the total capacity of the paralleled
system should be no more than 75% of the
sum of the individual converters. As an
example, for a system of four 12V Mega
TLynxTM converters in parallel, the total current
drawn should be less that 75% of (4 x 30A) ,
i.e. less than 90A.
• All modules should be turned on and off
together. This is so that all modules come up at
the same time avoiding the problem of one
converter sourcing current into the other
leading to an overcurrent trip condition. To
ensure that all modules come up
simultaneously, the on/off pins of all paralleled
converters should be tied together and the
converters enabled and disabled using the
on/off pin.
• The share bus is not designed for redundant
operation and the system will be non-functional
upon failure of one of the unit when multiple
units are in parallel. In particular, if one of the
converters shuts down during operation, the
other converters may also shut down due to
their outputs hitting current limit. In such a
situation, unless a coordinated restart is
ensured, the system may never properly restart
since different converters will try to restart at
different times causing an overload condition
and subsequent shutdown. This situation can
be avoided by having an external output
voltage monitor circuit that detects a shutdown
condition and forces all converters to shut
down and restart together.
When not using the active load sharing feature,
share pins should be left unconnected.
Tunable LoopTM
The 12V Mega TLynxTM modules have a new
feature that optimizes transient response of the
module called Tunable LoopTM.
External capacitors are usually added to the output
of the module for two reasons: to reduce output
ripple and noise (see Fig. 29) and to reduce output
voltage deviations from the steady-state value in the
presence of dynamic load current changes. Adding
external capacitance however affects the voltage
control loop of the module, typically causing the
loop to slow down with sluggish response. Larger
values of external capacitance could also cause the
module to become unstable.
The Tunable LoopTM allows the user to externally
adjust the voltage control loop to match the filter
network connected to the output of the module. The
Tunable LoopTM is implemented by connecting a
series R-C between the SENSE and TRIM pins of
the module, as shown in Fig. 34. This R-C allows
the user to externally adjust the voltage loop
feedback compensation of the module.
MODULE
VOUT
SENSE
TRIM
GND
RTUNE
CTUNE
RTrim
C O
Figure. 34. Circuit diagram showing connection
of RTUME and CTUNE to tune the control loop of
the module.
Recommended values of RTUNE and CTUNE for
different output capacitor combinations are given in
Tables 2 and 3. Table 2 shows the recommended
values of RTUNE and CTUNE for different values of
ceramic output capacitors up to 1000uF that might
be needed for an application to meet output ripple
and noise requirements. Selecting RTUNE and CTUNE
according to Table 2 will ensure stable operation of
the module.
In applications with tight output voltage limits in the
presence of dynamic current loading, additional
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 15
output capacitance will be required. Table 3 lists
recommended values of RTUNE and CTUNE in order
to meet 2% output voltage deviation limits for some
common output voltages in the presence of a 15A
to 30A step change (50% of full load), with an input
voltage of 12V.
Please contact your Lineage Power technical
representative to obtain more details of this feature
as well as for guidelines on how to select the right
value of external R-C to tune the module for best
transient performance and stable operation for other
output capacitance values or input voltages other
than 12V.
Table 2. General recommended values of of
RTUNE and CTUNE for Vin=12V and various
external ceramic capacitor combinations.
Table 3. Recommended values of RTUNE and
CTUNE to obtain transient deviation of ≤2% of
Vout for a 15A step load with Vin=12V.
Vo 3.3V 2.5V 1.8V 1.2V 0.8V
Co
2x47μF
+
3x330μ
F
Polyme
r
3x47μF +
3x330μF
Polymer
3x47μF
+
4x330μF
Polymer
7x330μF
Polymer
2x47μF+
10
x330μF
Polymer
RTUNE 390 390 330 220 150
CTUNE 2200pF 3900pF 6800pF 10nF 56nF
ΔV 66mV 50mV 36mV 24mV 16mV
Co 1x47μF 2x47μF 4x47μF 10x47μF 20x47μF
RTUNE 560 390 390 220 220
CTUNE 270pF 470pF 820pF 2200pF 4700pF
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 16
Thermal Considerations
Power modules operate in a variety of thermal
environments; however, sufficient cooling should
always be provided to help ensure reliable
operation.
Considerations include ambient temperature,
airflow, module power dissipation, and the need for
increased reliability. A reduction in the operating
temperature of the module will result in an increase
in reliability. The thermal data presented here is
based on physical measurements taken in a wind
tunnel. The test set-up is shown in Figure 35. Note
that the airflow is parallel to the short axis of the
module as shown in Figure 36. The derating data
applies to airflow in either direction of the module’s
short axis.
Figure 35. Thermal Test Setup.
The thermal reference points, Tref used in the
specifications is shown in Figure 36. For reliable
operation the temperatures at this point should not
exceed 130oC. The output power of the module
should not exceed the rated power of the module
(Vo,set x Io,max).
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame Board-
Mounted Power Modules” for a detailed discussion
of thermal aspects including maximum device
temperatures.
Figure 36. Preferred airflow direction and location of
hot-spot of the module (Tref).
A
i
r
flow
x
Power Module
W
ind Tunnel
PWBs
12.7_
(0.50)
76.2_
(3.0)
Probe Location
for measuring
airflow and
ambient
temperature
25.4_
(1.0)
AIRFLOW
DIRECTION
Q6 & L2 Tref
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 17
Example Application Circuit
Requirements:
Vin: 12V
Vout: 1.8V
Iout: 22.5A max., worst case load transient is from 15A to 22.5A
ΔVout: 1.5% of Vout (27mV) for worst case load transient
Vin, ripple 1.5% of Vin (180mV, p-p)
CI1 2x22μF/16V ceramic capacitor (e.g. TDK C Series)
CI2 100μF/16V bulk electrolytic
CO1 3x47μF/6.3V ceramic capacitor (e.g. TDK C Series, Murata GRM32ER60J476ME20)
CO2 2x470μF/4V Polymer/poscap, Low EST (e.g. Sanyo Poscap 4TPE470MCL/4TPF470ML)
CTune 15nF ceramic capacitor
RTune 430 ohms SMT resistor
RTrim 8kΩ SMT resistor (recommended tolerance of 0.1%)
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 18
Mechanical Outline of Module
Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)
Pin No. Function
1 On/Off
2 VIN
3 SEQ
4 GND
5 VOUT
6 TRIM
7 SENSE
8 GND
9 SHARE
10 GND
Co-planarity (max) : 0.102[0.004]
TOP VIEW
SIDE VIEW
BOTTOM VIEW
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 19
Recommended Pad Layout
Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)
PIN FUNCTION PIN FUNCTION
1 On/Off 6 Trim
2 VIN 7 Sense
3 SEQ 8 GND
4 GND 9 SHARE
5 VOUT 10 GND
Pin 8
Pin 10
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 20
Packaging Details
The 12V Mega TLynxTM SMT version is supplied in tape & reel as standard. Modules are shipped in quantities of
200 modules per reel.
All Dimensions are in millimeters and (in inches).
Reel Dimensions
Outside diameter: 330.2 (13.0)
Inside diameter: 177.8 (7.0)
Tape Width: 44.0 (1.73)
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 21
Surface Mount Information
Pick and Place
The 12V Mega TLynxTM SMT modules use an open
frame construction and are designed for a fully
automated assembly process. The modules are fitted
with a label designed to provide a large surface area
for pick and place operations. The label meets all the
requirements for surface mount processing, as well as
safety standards, and is able to withstand reflow
temperatures of up to 300oC. The label also carries
product information such as product code, serial
number and location of manufacture.
Figure 37. Pick and Place Location.
Nozzle Recommendations
The module weight has been kept to a minimum by
using open frame construction. Even so, these
modules have a relatively large mass when compared
to conventional SMT components. Variables such as
nozzle size, tip style, vacuum pressure and pick &
placement speed should be considered to optimize
this process. The minimum recommended inside
nozzle diameter for reliable operation is 3mm. The
maximum nozzle outer diameter, which will safely fit
within the allowable component spacing, is 5 mm
max.
Bottom Side Assembly
This module is not recommended for assembly
on the bottom side of a customer board. If such
an assembly is attempted, components may fall
off the module during the second reflow process.
If assembly on the bottom side is planned, please
contact Lineage Power for special manufacturing
process instructions.
Lead-free (Pb-free) Soldering
The –Z version Mega TLynx modules are lead-free
(Pb-free) and RoHS compliant and are both
forward and backward compatible in a Pb-free and
a SnPb soldering process. Failure to observe the
instructions below may result in the failure of or
cause damage to the modules and can
adversely affect long-term reliability.
Pb-free Reflow Profile
Power Systems will comply with J-STD-020 Rev. C
(Moisture/Reflow Sensitivity Classification for
Nonhermetic Solid State Surface Mount Devices)
for both Pb-free solder profiles and MSL
classification procedures. This standard provides
a recommended forced-air-convection reflow
profile based on the volume and thickness of the
package (table 4-2). The suggested Pb-free solder
paste is Sn/Ag/Cu (SAC).
Recommended linear reflow profile using Sn/Ag/Cu
solder:
Per J-STD-020 Rev. C
0
50
100
150
200
250
300
Reflow Time (Seconds)
Reflow Temp (°C)
Heating Zone
1°C/Secon
d
Peak Temp 260°C
* Min. Time Above 235°C
15 Seconds
*Time Above 217°C
60 Seconds
Cooling Zone
4°C/Second
NOTE: Soldering outside of the recommended
profile requires testing to verify results and
performance.
Tin Lead Soldering
The 12V Mega TLynxTM SMT power modules are lead
free modules and can be soldered either in a lead-
free solder process or in a conventional Tin/Lead
(Sn/Pb) process. It is recommended that the
customer review data sheets in order to customize the
solder reflow profile for each application board
assembly. The following instructions must be
observed when soldering these units. Failure to
observe these instructions may result in the failure of
or cause damage to the modules, and can adversely
affect long-term reliability.
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 22
In a conventional Tin/Lead (Sn/Pb) solder process
peak reflow temperatures are limited to less than
235oC. Typically, the eutectic solder melts at 183oC,
wets the land, and subsequently wicks the device
connection. Sufficient time must be allowed to fuse
the plating on the connection to ensure a reliable
solder joint. There are several types of SMT reflow
technologies currently used in the industry. These
surface mount power modules can be reliably
soldered using natural forced convection, IR (radiant
infrared), or a combination of convection/IR. For
reliable soldering the solder reflow profile should be
established by accurately measuring the modules CP
connector temperatures.
REFLOW TEMP (°C)
0
50
10 0
15 0
200
250
300
Preheat zo ne
max 4
o
Cs
-1
Soak zone
30-240s
Heat zone
max 4
o
Cs
-1
Peak Temp 235
o
C
Co o ling
zo ne
1- 4
o
Cs
-1
T
lim
above
205
o
C
REFLOW TIME (S)
Figure 38. Reflow Profile for Tin/Lead (Sn/Pb)
process.
MAX TEMP SOLDER (°C)
200
205
210
215
220
225
230
235
240
0 10 203040 5060
Figure 39. Time Limit Curve Above 205oC Reflow
for Tin Lead (Sn/Pb) process.
MSL Rating
The 12V Mega TLynxTM SMT modules have a MSL
rating of 2.
Storage and Handling
The recommended storage environment and handling
procedures for moisture-sensitive surface mount
packages is detailed in J-STD-033 Rev. A (Handling,
Packing, Shipping and Use of Moisture/Reflow
Sensitive Surface Mount Devices). Moisture barrier
bags (MBB) with desiccant are required for MSL
ratings of 2 or greater. These sealed packages
should not be broken until time of use. Once the
original package is broken, the floor life of the product
at conditions of <= 30°C and 60% relative humidity
varies according to the MSL rating (see J-STD-033A).
The shelf life for dry packed SMT packages will be a
minimum of 12 months from the bag seal date, when
stored at the following conditions: < 40° C, < 90%
relative humidity.
Post Solder Cleaning and Drying
Considerations
Post solder cleaning is usually the final circuit-board
assembly process prior to electrical board testing. The
result of inadequate cleaning and drying can affect
both the reliability of a power module and the
testability of the finished circuit-board assembly. For
guidance on appropriate soldering, cleaning and
drying procedures, refer to Board Mounted Power
Modules: Soldering and Cleaning Application Note
(AN04-001).
Data Sheet
May 4, 2012
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules:
6.0 – 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
LINEAGE POWER 23
Document No: DS09-003 ver 1.13
PDF Name: APTS030A0X3_ds.pdf
Ordering Information
Table 4. Device Codes
Product codes Input
Voltage
Output
Voltage
Output
Current
On/Off
Logic
Connector
Type Comcodes
APTS030A0X3-SRPHZ 6.0 – 14Vdc 0.8 – 3.63Vdc 30A Negative SMT CC109138351
Table 5. Coding Scheme
TLynx
family
Sequencing
feature.
Input voltage
range
Output current Output voltage
Options ROHS Compliance
AP T S 030A0 X -SR Z
T = with Seq. S = 6 - 14V 30A X =
programmable
output
S = Surface Mount
R = Tape&Reel
P = Paralleling
Z = ROHS6
Table 6. Device Options
Option Device Code Suffix
Current Share -P
2 Extra ground pins -H
RoHS Compliant -Z
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Lineage Power Corporation
601 Shiloh Road, Plano, TX 75074, USA
+1-888-LINEAGE(546-3243)
(Outside U.S.A.: +1-972-244-WATT(9288))
www.lineagepower.com
e-mail: techsupport1@lineagepower.com
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Tel: +86.021.54279977*808
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Tel: +49.89.878067-280
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Tel: +91.80.28411633
Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or
a
pplication. No rights under any patent accompany the sale of any such product(s) or information.
Lineage Power DC-DC products are protected under various patents. Information on these patents is available at www.lineagepower.com/patents.
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2010 Lineage Power Corporation, (Plano, Texas) All International Rights Reserved.
