1
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
DESCRIPTION
LTC7132
Dual Phase Monolithic Step-Down
Supply with PSM
Demonstration circuit 2666A-A/2666A-B features the
LT C
®
7132, a wide input and output voltage range, high
efficiency dual output polyphase DC/DC step-down regu-
lator with sub-milliohm DCR sensing and digital power
system management. This demo board is available in two
versions: DC2666A-A is configured as 2-phase dual out-
put, DC2666A-B is configured as 2-phase single output.
Both versions operate over an input voltage range of 6V
to 20V. The DC2666A-A factory default output voltage for
both outputs are VOUT0 = 1V, VOUT1 = 1V with a 20A load
current rating per channel. The DC2666A-B factory default
output voltage is VOUT = 1V with a 40A load current rat-
ing. Both channels can deliver up to 25A maximum load
current for each version.
The output voltages can be programmed from 0.6V up to
1.8V. Programming the output voltages to any value that
is greater than 1.8V will require changes to the inductors,
external DCR network component and may require the
maximum output current to be derated based on thermal
derating curves provided in the data sheet of LTC7132.
The factory default switching frequency is preset at
425kHz typical. The DC2666A-A/DC2666A-B uses exter-
nal inductors with extremely low DCR to demonstrate the
part’s capability of provide excellent performance for sub-
milliohm DCR current sense applications.
Both versions of DC2666A comes with PMBus interface
and digital power system management functions. An
All registered trademarks and trademarks are the property of their respective owners.
onboard 12-pin connector is available for users to connect
the DC1613A dongle to the demo board, which provides
an easy way to communicate and program the part using
LTpowerPlay
®
software development tool. LTpowerPlay
software and I
2
C/PMBus/SMBus Dongle DC1613A allows
users to monitor real time telemetry of input and output
voltages, input and output current, switching frequency,
internal IC die temperatures, external power component
temperatures and fault logs. Programmable parameters
include device address, output voltages, control loop
compensation, switching frequency, phase interleav-
ing, DCM or CCM Mode of operation, digital soft-start,
sequencing and time based shut down, fault responses
to input and output overvoltage, output overcurrent, IC
die and power component overtemperatures.
The LTC7132 is available in a thermally enhanced, low
profile 140-lead 9mm × 11.25mm × 2.22mm BGA pack-
age. It is recommended to read the data sheet and demo
manual of LTC7132 prior to use or making any changes
to DC2666A-A/DC2666A-B.
DC2666A-A: 6V ≤ VIN ≤ 20V; VOUT0/VOUT1 = 0.6V to 1.8V
at 20A, 25A Peak
DC2666A-B: 6V ≤ VIN ≤ 20V; VOUT = 0.6V to 1.8V at 40A,
50A Peak
Design files for this circuit board are available.
2
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
QUICK START PROCEDURE
PERFORMANCE SUMMARY
Demonstration circuit DC2666A-A/DC2666A-B is easy
to set up to evaluate the performance of the LTC7132.
Please refer to Figure4a (DC2666A-A) and Figure4b
(DC2666A-B) for proper measurement equipment setup
and follow the test procedures below:
1. With power off, connect the input power supply between
VIN (J1) and GND (J2).
2. Connect the first load between VOUT0 (J3) and GND
(J4) for channel 0, connect the second load between
VOUT1 (J5) and GND (J6) for channel 1. Preset all the
loads to 0A.
3. Connect the DMM between the input test points: VIN+
(E1) and VIN- (E2) to monitor the input voltage. Con-
nect DMMs between VOUT0+ (E3) and VOUT0- (E4),
VOUT1+ (E5) and VOUT1- (E6) to monitor correspond-
ing DC output voltages of channel 0 and channel 1.
4. Prior power up the DC2666A-A/DC2666A-B, check the
default position of the jumpers and switches (Refer to
Table1):
Table1. Demo Board Default Jumpers and Switches Position
JUMPER/
SWITCH NAME SW0, SW1 JP1 JP2 JP3
DESCRIPTION RUN0, RUN1 WP BIAS PULSE
POSITION OFF OFF OFF EXT
5. Turn on the power supply at the input, measure and
make sure the input supply voltage is 12V. Flip SW0
(RUN0) and SW1 (RUN1) to the ON position. The
output voltages should be 1.0V ± 0.5% for VOUT0
and VOUT1.
6. Once the input and output voltages are properly estab-
lished, adjusting the input voltage between 6V to 20V
max and the load current within the operating range
PARAMETER CONDITIONS MIN TYP MAX UNITS
DC2666A-A: Dual Phase Dual Output
Input Voltage Range: VIN 6 12 20 V
Demo Board Default Output Voltages: VOUT0,
VOUT1
fSW = 425kHz, VIN = 6V to 20V, ILOAD = 0A to 20A per Channel 1 ±0.5% V
Default Switching Frequency: fSW Factory Default Switching Frequency 425
±7.5%
kHz
Maximum Continuous Output Current IOUT
per Channel, IOUT0, IOUT1
fSW = 425kHz, VIN = 6V to 20V, VOUT0 = 1V, VOUT1 = 1V 20 A
Efficiency VIN = 12V, fSW = 425kHz, VOUT0 = 1V at IOUT0 = 20A, CCM,
EXTVCC = 5.5V
89.20
(Figure5)
%
Thermal Performance (Peak Temperature) VIN = 12V, fSW = 425kHz, VOUT0 = 1V, VOUT1 = 1V, IOUT =
20A per Channel, EXTVCC = 5.5V, TA = 25°C, No Heatsink, No
Forced Airflow
LTC7132:
77
(Figure7)
°C
DC2666A-B: Dual Phase Single Output
Input Voltage Range: VIN 6 12 20 V
Demo Board Default Output Voltages: VOUT fSW = 425kHz, VIN = 6V to 20V, ILOAD = 0A to 40A Max 1 ±0.5% V
Default Switching Frequency Factory Default Switching Frequency 425 ±
7.5%
kHz
Maximum Continuous Output Current IOUT fSW = 425kHz, VIN = 6V to 20V, VOUT = 1V 40 A
Efficiency VIN = 12V, fSW = 425kHz, VOUT = 1V at IOUT = 40A, CCM,
EXTVCC = 5.5V
88.80
(Figure6)
%
Thermal Performance (Peak Temperature) VIN = 12V, fSW = 425kHz, VOUT = 1V, ILOAD = 40A, EXTVCC =
5.5V, TA = 25°C, No Heatsink, No Forced Airflow
LTC7132:
78.9
(Figure8)
°C
Specifications are at TA = 25°C
3
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
QUICK START PROCEDURE
of 0A to 20A max per channel. Observe the output
voltage regulation, output ripple voltage, switching
node waveforms, load transient response and other
parameters.
NOTE: To measure the input/output voltage ripples
properly, do not use the long ground lead on the os-
cilloscope probe. See Figure3 for the proper probing
technique of input/output voltage ripples. Short, stiff
leads need to be soldered to the (+) and (–) terminals
of an input or output capacitor. The probe’s ground
ring needs to touch the (–) lead and the probe tip needs
to touch the (+) lead.
7. DC2666A-A/DC2666A-B provides convenient onboard
BNC terminals to accurately measure the output ripple
voltage of channel 0 and channel 1. Connect short BNC
cables from VOUT0 (J7) and VOUT1 (J8) to the input
channels of an oscilloscope. (Scope probe ratio 1:1,
AC-coupling) to observe the output ripple voltage.
8. (Optional) Operation with EXTVCC
The LTC7132 EXTVCC pin is available for optional use
of an external 5.5V bias supply voltage to power the
EXTVCC pin, bypassing the internal 5.5V regulator when
EXTVCC is higher than 4.7V and VIN is higher than 7V.
An onboard LDO (U2) output can be used to supply
5.5V bias voltage for EXTVCC pin. The onboard 5.5V
LDO output is enabled by insert R50 with zero ohm and
place JP2 (BIAS) to the ON position. Place JP2 (BIAS)
to the OFF position to disable the output of this LDO.
EXTVCC pin requires a minimum of 4.7µF decoupling
ceramic capacitor between this pin and PGND. Do not
exceed the maximum rated voltage of EXTVCC pin and
make sure VIN is powered up before applying EXTVCC.
9. (Optional) Onboard Load Step Circuit
DC2666A-A/DC2666A-B provides an option onboard
load transient circuit to quickly check ΔVOUT peak to
peak deviation during rising or falling dynamic load
transient.
The load step circuit is enabled by place JP2 (BIAS) to
the ON position, JP3 (PULSE) to the INT position and
tweak the potentiometer R71 to adjust the amplitude
of the pulse load current. Connect a short BNC cable
from IOUT STEP (J9) to the input channel of an oscil-
loscope to monitor the output load current step. The
equivalent conversion ratio of voltage to current of IOUT
STEP is 10mV/1A. The load step response of VOUT0
is observed by connecting a short BNC cable from
VOUT0 (J7) to the input of an oscilloscope channel.
Similarly, the load step response of VOUT1 is observed
by remove R56 and use this zero-ohm jumper to stuff
R58 and connect a short BNC cable from VOUT1 (J8)
to the input of an oscilloscope channel. When operat-
ing the part as dual phase dual output, R56 and R58
cannot be stuffed at the same time to avoid shorting
two outputs together. The onboard load step circuit is
disabled by set JP2 (BIAS) to the OFF position. If the
fine adjustment of the output load step current rise
time and fall time di/dt is required, disable the onboard
load step circuit by set JP2 (BIAS) to the OFF posi-
tion, set JP3 (PULSE) to the EXT position and use an
external pulse generator with adjustable dV/dt to apply
the pulse voltage at E17 (EXT PULSE) and connect a
short BNC cable from IOUT STEP (J9) to the input of
an oscilloscope channel to monitor the corresponding
load step current. The output current step slew rate
and its magnitude is varied by adjusting the rise time,
fall time and amplitude of the applied voltage pulse at
the gate of the MOSFETs (Q3, Q4). Keep the voltage
pulse at the frequency less than 10Hz and maximum
duty cycle less than 5% to avoid excessive thermal
stress on the MOSFETs.
10. Connecting a PC to DC2666A-A/DC2666A-B
Refer to Figure1a (DC2666A-A) and Figure1b
(DC2666A-B) for proper demo board set up with PC.
Users can use a PC to reconfigure the power manage-
ment features of the LTC7132 such as: nominal VOUT,
margin set points, OV/UV limits, temperature fault
limits, sequencing parameters, the fault logs, fault
responses, GPIOs and other functionality. The DC1613A
dongle can be hot plugged when VIN is present.
5
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
QUICK START PROCEDURE
LTpowerPlay Quick Start Guide
LTpowerPlay is a powerful Windows-based development environment that supports ADI power system manage-
ment ICs. The software supports a variety of different tasks. You can use LTpowerPlay to evaluate ADI PSM ICs by
connecting to a demo board system. LTpowerPlay can also be used in an offline mode (with no hardware present)
to build a multichip configuration file that can be saved and reloaded anytime. LTpowerPlay provides unprecedented
diagnostic tool and debug features. It becomes a valuable diagnostic tool during board bring-up to program or tweak
the power management scheme in a system, or to diagnose power issues when bringing up rails. LTpowerPlay utilizes
the DC1613A USB-to-SMBus controller to communicate with one of many potential targets, including all the parts in
PSM product category demo system. The software also provides an automatic update feature to keep the software
current with the latest set of device drivers and documentation. The LTpowerPlay software can be downloaded from:
LTpowerPlay. USB to PMBus Controller Dongle DC1613A for use with LTpowerPlay is available at: DC1613A
To access technical support documents for LTC Digital Management Products, visit Help or view online help on the
LTpowerPlay menu.
The following procedure describes how to use LTpowerPlay to monitor and change the settings of LTC7132:
1. Download and install the LTpowerPlay GUI: LTpowerPlay
Figure2. LTpowerPlay Main Interface
6
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
QUICK START PROCEDURE
1. Launch the LTpowerPlay GUI
a. The GUI should automatically identify the DC2666A-A/DC2666A-B.
The system tree on the left-hand side should look like this:
b. A green message box shows for a few seconds in the lower left-hand corner, confirming that the LTC7132 is com-
municating:
c. In the Toolbar, click the R (RAM to PC) icon to read the RAM from the LTC7132. The configuration is read from
the RAM of the LTC7132 and loaded into the GUI.
7
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
QUICK START PROCEDURE
d. Example of program the output voltage to a different value:
In the Config Tab, click on the Voltage Tab in the main menu bar, type in 1.2V in the VOUT_COMMAND box as
showed below:
Then click the W (PC to RAM) icon to write these register values to the LTC7132.
8
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
The output voltage will change to 1.2V.
If the write is successful, the following message should be seen:
e. All user configurations or changes can be saved in to the NVM. In the toolbar, click RAM to NVM icon:
f. Save the demo board configuration to a (*. proj) file. Click the Save icon and save the file with a preferred file name.
Figure3. Scope Probe Placement for Measuring Input or Output Ripple Voltage
+ –
V
OUT
GND
COUT
QUICK START PROCEDURE
9
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
A
V
VIN
6V to 20V
V
LOAD 0
0A to 20A
V
1mΩ SHUNT
LOAD 1
0A to 20A
V
1mΩ SHUNT
VOUT
A
V
VIN
6V to 20V
V
V
LOAD 0
0A to 20A
V
1mΩ SHUNT
LOAD 1
0A to 20A
V
1mΩ SHUNT
VOUT 1
VOUT 0
(4a) Proper Measurement Equipment Setup for DC2666A-A
(4b) Proper Measurement Equipment Setup for DC2666A-B
Figure4.
QUICK START PROCEDURE
10
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
CIRCUIT CONFIGURATION: DUAL PHASE DUAL OUTPUT
f
SW = 425kHz TYPICAL
V
IN = 12V
V
OUT0 = 1V, VOUT1 = 1V
I
LOAD0 = 20A, ILOAD1 = 20A
EXTV
CC = 5.5V (EXTERNAL 5.5V POWER SUPPLY USED)
TA
= 25°C, NO HEATSINK, NO FORCED AIRFLOW
dc2666a F07
CIRCUIT CONFIGURATION: DUAL PHASE SINGLE OUTPUT
f
SW = 425kHz TYPICAL
V
IN = 12V
V
OUT = 1V
I
LOAD_TOTAL = 40A
EXTV
CC = 5.5V (EXTERNAL 5.5V POWER SUPPLY USED)
TA
= 25°C, NO HEATSINK, NO FORCED AIRFLOW
dc2666a F08
LOAD CURRENT (A)
CIRCUIT CONFIGURATION:
DUAL PHASE DUAL OUTPUT
fSW = 425kHz
VOUT = 1V
ILOAD = 0A TO 20A
EXTVCC = 5.5V (EXTERNAL 5.5V BIAS
VOLTAGE SUPPLY USED)
ONE OUTPUT RAIL IS ENABLED
AT A TIME
0 5
EFFICIENCY (%)
POWER LOSS (W)
95
90
80
70
85
75
65
60
7
6
4
2
5
3
1
0
15
dc2666a F05
2010
VIN = 12
VIN = 20
EFFICIENCY
POWER LOSS
LOAD CURRENT (A)
CIRCUIT CONFIGURATION:
DUAL PHASE SINGLE OUTPUT
fSW = 425kHz
VOUT = 1V
ILOAD = 0A TO 40A
EXTVCC = 5.5V (EXTERNAL 5.5V BIAS
VOLTAGE SUPPLY USED)
0 10
EFFICIENCY (%)
POWER LOSS (W)
95
90
80
70
85
75
65
60
14
12
8
4
10
6
2
0
30
dc2666a F06
40205 15 3525
VIN = 12
VIN = 20
EFFICIENCY
POWER LOSS
QUICK START PROCEDURE
Figure5. DC2666A-A: Efficiency
Figure7. DC2666A-A: Thermal Performance
Figure6. DC2666A-B: Efficiency
Figure8. DC2666A-B: Thermal Performance
11
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
QUICK START PROCEDURE
Figure9. DC2666A-A: Load Transient Response
Figure11. DC2666A-A: Output Ripple Voltage
Figure10. DC2666A-B: Load Transient Response
Figure12. DC2666A-B: Output Ripple Voltage
VOUT
50mV/DIV
AC-COUPLING
ILOADSTEP
10A/DIV
dc2666a F09
CIRCUIT CONFIGURATION: DUAL PHASE DUAL OUTPUT
fSW = 425kHz
VIN = 12V
VOUT = 1V
ILOADSTEP = 0A TO 10A AT 10A/µs
V
OUT(P-P)
= 98mV
50µs/DIV
CIRCUIT CONFIGURATION: DUAL PHASE DUAL OUTPUT
fSW = 425kHz
VOUT = 1V
ILOAD = 20A
VOUT(P-P) = 15.6mV
10µs/DIV
VOUT
20mV/DIV
AC-COUPLING
dc2666a F11
VOUT
50mV/DIV
AC-COUPLING
ILOADSTEP
20A/DIV
dc2666a F10
CIRCUIT CONFIGURATION: DUAL PHASE SINGLE OUTPUT
fSW = 425kHz
VIN = 12V
VOUT = 1V
ILOADSTEP = 0A TO 20A AT 20A/µs
V
OUT(P-P)
= 102mV
50µs/DIV
CIRCUIT CONFIGURATION: DUAL PHASE SINGLE OUTPUT
fSW = 425kHz
VOUT = 1V
ILOAD = 40A
VOUT(P-P) = 14.4mV
10µs/DIV
VOUT
20mV/DIV
AC-COUPLING
dc2666a F12
12
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
DC2666A-A Required Circuit Components
1 4 CIN1, CIN2, CIN3, CIN4 CAP, 1210 22µF 20% 25V X5R MURATA GRM32ER61E226ME15L
2 9 COUT1, COUT2, COUT5, COUT6, COUT8,
COUT9, COUT12, COUT13, C22
CAP, 1210 100µF 20% 6.3V X5R MURATA GRM32ER60J107ME20L
3 4 COUT3, COUT4, COUT10, COUT11 CAP, 7343 330µF 20% 6.3V POSCAP PANASONIC 6TPF330M9L
4 5 COUT15, COUT16, C5, C25, C26 CAP, 0603 1µF 20% 25V X5R MURATA GRM188R61E105MA12D
5 2 C1, C4 CAP, 0603 2.2µF 10% 10V X7R MURATA GRM188R71A225KE15D
6 1 C2 CAP, 180µF 20% 25V OSCON PANASONIC 25SVPF180M
7 2 C6, C8 CAP, 0603 4.7µF 20% 25V X5R TDK C1608X5R1E475M080AC
8 2 C9, C16 CAP, 0603 0.1µF 5% 50V X7R KEMET C0603X104J5RECAUTO
9 2 C10, C18 CAP, 25V 0.22µF 0603 X7R 5% KEMET C0603C224J3RACTU
10 3 C11, C13, C24 CAP, 0603 150pF 5% 50V NPO AVX 06035A151JAT2A
11 2 C12, C14 CAP, 0603 2200pF 5% 50V C0G MURATA GRM1885C1H222JA01D
12 4 C15, C17, C28, C29 CAP, 0603 10nF 10% 25V X7R AVX 06033C103KAT2A
13 2 C19, C20 CAP, 1210 10µF 10% 25V X7R MURATA GRM32DR71E106KA12L
14 2 C23, C27 CAP, 0603 100nF 20% 16V X7R AVX 0603YC104MAT2A
15 2 D1, D2 DIODE, SCHOTTKY 30V, 100mA CENTRAL SEMI CMDSH-3-TR
16 1 D3 DIODE, 0.5A ULTRA LOW VF SCHOTTKY NEXPERIA PMEG2005AEL
17 4 D6, D7, D8, D9 LED, 0603 GREEN WURTH ELEKTRONIK 150060GS75000
18 1 D10 LED, 0603 RED WURTH ELEKTRONIK 150060SS75000
19 2 L1, L2 IND, 0.3µH DCR = 0.29mΩ EATON, FP1007R3-R30-R
20 2 Q1, Q2 XSTR, PNP GENERAL PURPOSE DIODES INC. MMST3906-7-F
21 2 Q3, Q4 XSTR, N-CH 40V 14A TO-252 VISHAY SUD50N04-8M8P-4GE3
22 1 Q5 MOSFET P-CH 20V 5.2A SOT-23 VISHAY SI2365EDS-T1-GE3
23 4 Q7, Q8, Q9, Q10 XSTR, N-CH 60V 0.21A SOT-23 DIODES INC 2N7002-7-F
24 1 R1 RES., 0.005Ω, 1%, 2W, 2512 PANASONIC ERJMP4PF5MOU
25 1 R2 RES, 0603 1Ω 1% 1/10W VISHAY CRCW06031R00FKEA
26 10 R3, R4, R15, R17, R21, R23, R60, R75,
R77, R79
RES, 0603 0Ω JUMPER YAGEO RC0603FR-070RL
27 11 R5, R6, R7, R9, R37, R38, R39, R40, R53,
R55, R66
RES, 0603 10k 5% 1/10W VISHAY CRCW060310K0JNEA
28 6 R8, R10, R11, R12, R84, R85 RES, 0603 4.99k 1% 1/10W VISHAY CRCW06034K99FKEA
29 6 R13, R16, R19, R22, R82, R83 RES, 0603 10Ω 1% 1/10W VISHAY CRCW060310R0FKEA
30 2 R14, R20 RES, 0603 931Ω 1% 1/10W NIC NRC06F9310TRF
31 1 R54 RES, 0603 34.8k 1% 1/10W VISHAY CRCW060334K8FKEA
32 1 R56 RES, 2010 0Ω JUMPER VISHAY CRCW20100000Z0EF
33 1 R57 RES, 0603 2Ω 5% 1/10W VISHAY CRCW06032R00JNEA
34 1 R59 RES, 0603 154k 1% 1/10W VISHAY CRCW0603154KFKEA
35 1 R61 RES, 0603 1M 5% 1/10W VISHAY CRCW06031M00JNEA
36 2 R62, R64 RES, 0603 20k 5% 1/10W VISHAY CRCW060320K0JNEA
37 1 R63 RES, 0603 3.3Ω 1% 1/10W VISHAY CRCW06033R30FKEA
38 1 R65 RES, 0603 681k 1% 1/10W YAGEO RC0603FR-07681KL
13
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
39 1 R67 RES, 0603 249Ω 1% 1/10W VISHAY CRCW0603249RFKEA
40 1 R68 RES, 0603 82.5Ω 1% 1/10W VISHAY CRCW060382R5FKEA
41 1 R69 RES, 2512 0.01Ω 1% 1W VISHAY WSL2512R0100FEA
42 1 R71 RES, VARIABLE 5k BOURNS 3386P-1-502-LF
43 1 R72 RES, 0603 649Ω 1% 1/10W VISHAY CRCW0603649RFKEA
45 4 R91, R92, R93, R94 RES, 0603 200Ω 5% 1/10W VISHAY CRCW0603200RJNEA
46 1 R97 RES, 0603 127Ω 1% 1/10W VISHAY CRCW0603127RFKEA
47 1 U1 IC, LTC7132 BGA ANALOG DEVICES INC., LTC7132IY#PBF-ES
48 1 U2 IC, LT1761ES5-SD REGULATOR SOT-23-S5 ANALOG DEVICES INC., LT1761ES5-SD#PBF
49 1 U3 IC, LTC6992IS6-1 ANALOG DEVICES INC., LTC6992IS6-1#PBF
50 1 U4 IC, LT1803IS5 SINGLE OP AMP ANALOG DEVICES INC., LT1803IS5#PBF
51 1 U5 IC, 24LC024-I/ST MICROCHIP 24LC024-I/ST
Additional Demo Board Circuit Components
1 0 COUT7, COUT14 CAP, 7343, OPTION OPTION
2 0 C3 CAP, OPTION OPTION
3 0 C7 CAP, 0603, OPTION OPTION
4 0 C21 CAP, 1210, OPTION OPTION
5 0 D4, D5 DIODE, SOD-323, OPTION OPTION
6 0 Q6 XSTR, OPTION DIODES INC. DMP3130L-7
7 0 R43, R46, R51, R52, R70 RES, 2512, OPTION OPTION
8 0 R18, R24, R25, R26, R27, R28, R29, R30,
R31, R32, R33, R34, R35, R36, R41, R42,
R44, R45, R47, R48, R49, R50, R73, R74,
R76, R78, R80, R81, R86, R87, R89, R90,
R95, R96
RES, 0603, OPTION OPTION
9 0 R58 RES, 2010, OPTION OPTION
10 0 R88 RES, 1206, OPTION OPTION
Hardware: For Demo Board Only
1 26 E1-E6, E8-E18, E20-E24, E26-E28, E30 TEST POINT, TURRET, 0.094" MILL-MAX, 2501-2-00-80-00-00-07-0
2 3 JP1, JP2, JP3 HEADER, SINGLE ROW 3-PIN WURTH ELEKTRONIK 62000311121
3 6 J1, J2, J3, J4, J5, J6 BANANA JACK CONNECTOR KEYSTONE, 575-4
4 3 J7, J8, J9 CONN., RF, BNC, RCPT, THT, STR, 5-PIN AMPHENOL CONNEX, 112404
5 1 J10 HEADER, 4-PIN 2mm STR DL HIROSE, DF3A-4P-2DSA
6 1 J11 HEADER, 12-PIN 2mm STR DL FCI 98414-G06-12ULF
7 1 J12 CONN., HDR, FEMALE, 2x7, 2mm, R/A THT SULLINS CONNECTOR SOLUTIONS,
NPPN072FJFN-RC
8 1 J13 CONN., HDR, MALE, 2x7, 2mm, R/A THT MOLEX, 87760-1416
9 2 SW0, SW1 SWITCH, SUBMINIATURE SLIDE C&K JS202011CQN
10 3 XJP1, XJP2, XJP3 SHUNT WURTH ELEKTRONIK 60800213421
11 4 STANDOFF STANDOFF, NYLON, SNAP-ON, 0.50" WURTH ELEKTRONIK, 702935000
14
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
DC2666A-B Required Circuit Components
1 4 CIN1, CIN2, CIN3, CIN4 CAP, 1210 22µF 20% 25V X5R MURATA GRM32ER61E226ME15L
2 9 COUT1, COUT2, COUT5, COUT6, COUT8,
COUT9, COUT12, COUT13, C22
CAP, 1210 100µF 20% 6.3V X5R MURATA GRM32ER60J107ME20L
3 4 COUT3, COUT4, COUT10, COUT11 CAP, 7343 330µF 20% 6.3V POSCAP PANASONIC 6TPF330M9L
4 5 COUT15, COUT16, C5, C25, C26 CAP, 0603 1µF 20% 25V X5R MURATA GRM188R61E105MA12D
5 2 C1, C4 CAP, 0603 2.2µF 10% 10V X7R MURATA GRM188R71A225KE15D
6 1 C2 CAP, 180µF 20% 25V OSCON PANASONIC 25SVPF180M
7 2 C6, C8 CAP, 0603 4.7µF 20% 25V X5R TDK C1608X5R1E475M080AC
8 2 C9, C16 CAP, 0603 0.1µF 5% 50V X7R KEMET C0603X104J5RECAUTO
9 2 C10, C18 CAP, 25V 0.22µF 0603 X7R 5% KEMET C0603C224J3RACTU
10 1 C11 CAP, 0603 220pF 5% 50V NPO AVX 06035A221JAT2A
11 1 C12 CAP, 50V 4700pF X7R 0603 5% AEC-Q200 AVX 06035C472J4T2A
12 1 C13 CAP, 0603 10pF 1% 50V NPO AVX 06035A100FAT2A
13 4 C15, C17, C28, C29 CAP, 0603 10nF 10% 25V X7R AVX 06033C103KAT2A
14 2 C19, C20 CAP, 1210 10µF 10% 25V X7R MURATA GRM32DR71E106KA12L
15 1 C24 CAP, 0603 150pF 5% 50V NPO AVX 06035A151JAT2A
16 2 C23, C27 CAP, 0603 100nF 20% 16V X7R AVX 0603YC104MAT2A
17 2 D1, D2 DIODE, SCHOTTKY 30V, 100mA CENTRAL SEMI CMDSH-3-TR
18 1 D3 DIODE, 0.5A ULTRA LOW VF SCHOTTKY NEXPERIA PMEG2005AEL
19 4 D6, D7, D8, D9 LED, 0603 GREEN WURTH ELEKTRONIK 150060GS75000
20 1 D10 LED, 0603 RED WURTH ELEKTRONIK 150060SS75000
21 2 L1, L2 IND, 0.3µH DCR = 0.29mΩ EATON, FP1007R3-R30-R
22 2 Q1, Q2 XSTR, PNP GENERAL PURPOSE DIODES INC. MMST3906-7-F
23 2 Q3, Q4 XSTR, N-CH 40V 14A TO-252 VISHAY SUD50N04-8M8P-4GE3
24 1 Q5 MOSFET P-CH 20V 5.2A SOT-23 VISHAY SI2365EDS-T1-GE3
25 4 Q7, Q8, Q9, Q10 XSTR, N-CH 60V 0.21A SOT-23 DIODES INC 2N7002-7-F
26 1 R1 RES., 0.005Ω, 1%, 2W, 2512 PANASONIC ERJ-MP4PF5M0U
27 1 R2 RES, 0603 1Ω 1% 1/10W VISHAY CRCW06031R00FKEA
28 17 R3, R4, R15, R17, R21, R23, R60, R75, R77,
R79, R41, R42, R44, R45, R47, R48, R49
RES, 0603 0Ω JUMPER YAGEO RC0603FR-070RL
29 11 R5, R6, R7, R9, R37, R38, R39, R40, R53,
R55, R66
RES, 0603 10k 5% 1/10W VISHAY CRCW060310K0JNEA
30 6 R8, R10, R11, R12, R84, R85 RES, 0603 4.99k 1% 1/10W VISHAY CRCW06034K99FKEA
31 4 R13, R16, R82, R83 RES, 0603 10Ω 1% 1/10W VISHAY CRCW060310R0FKEA
32 2 R14, R20 RES, 0603 931Ω 1% 1/10W NIC NRC06F9310TRF
33 2 R43, R46 RES, 2512 0.001Ω 1% 1W PANASONIC ERJ-M1WTF1M0U
34 1 R54 RES, 0603 34.8k 1% 1/10W VISHAY CRCW060334K8FKEA
35 1 R56 RES, 2010 0Ω JUMPER VISHAY CRCW20100000Z0EF
36 1 R57 RES, 0603 2Ω 5% 1/10W VISHAY CRCW06032R00JNEA
37 1 R59 RES, 0603 154k 1% 1/10W VISHAY CRCW0603154KFKEA
38 1 R61 RES, 0603 1M 5% 1/10W VISHAY CRCW06031M00JNEA
15
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
39 2 R62, R64 RES, 0603 20k 5% 1/10W VISHAY CRCW060320K0JNEA
40 1 R63 RES, 0603 3.3Ω 1% 1/10W VISHAY CRCW06033R30FKEA
41 1 R65 RES, 0603 681k 1% 1/10W YAGEO RC0603FR-07681KL
42 1 R67 RES, 0603 249Ω 1% 1/10W VISHAY CRCW0603249RFKEA
43 1 R68 RES, 0603 82.5Ω 1% 1/10W VISHAY CRCW060382R5FKEA
44 1 R69 RES, 2512 0.01Ω 1% 1W VISHAY WSL2512R0100FEA
45 1 R71 RES, VARIABLE 5k BOURNS 3386P-1-502-LF
46 1 R72 RES, 0603 649Ω 1% 1/10W VISHAY CRCW0603649RFKEA
47 4 R91, R92, R93, R94 RES, 0603 200Ω 5% 1/10W VISHAY CRCW0603200RJNEA
48 1 R97 RES, 0603 127Ω 1% 1/10W VISHAY CRCW0603127RFKEA
49 1 U1 IC, LTC7132 BGA ANALOG DEVICES INC., LTC7132IY#PBF-ES
50 1 U2 IC, LT1761ES5-SD REGULATOR SOT-23-S5 ANALOG DEVICES INC., LT1761ES5-SD#PBF
51 1 U3 IC, LTC6992IS6-1 ANALOG DEVICES INC., LTC6992IS6-1#PBF
52 1 U4 IC, LT1803IS5 SINGLE OP AMP ANALOG DEVICES INC., LT1803IS5#PBF
53 1 U5 IC, 24LC024-I/ST MICROCHIP 24LC024-I/ST
Additional Demo Board Circuit Components
1 0 COUT7, COUT14 CAP, 7343, OPTION OPTION
2 0 C3 CAP, OPTION OPTION
3 0 C7 CAP, 0603, OPTION OPTION
4 0 C14 CAP, 0603, OPTION OPTION
5 0 C21 CAP, 1210, OPTION OPTION
6 0 D4, D5 DIODE, SOD-323, OPTION OPTION
7 0 Q6 XSTR, OPTION DIODES INC. DMP3130L-7
8 0 R51, R52, R70 RES, 2512, OPTION OPTION
9 0 R18, R19, R22, R24-R36 , R50, R73, R74,
R76, R78, R80, R81, R86, R87, R90, R95,
R96
RES., OPTION, 0603 OPTION
10 0 R58 RES, 2010, OPTION OPTION
11 0 R88 RES, 1206, OPTION OPTION
Hardware: For Demo Board Only
1 26 E1-E6, E8-E18, E20-E24, E26-E28, E30 TEST POINT, TURRET, 0.094" MILL-MAX, 2501-2-00-80-00-00-07-0
2 3 JP1, JP2, JP3 HEADER, SINGLE ROW 3-PIN WURTH ELEKTRONIK 62000311121
3 6 J1, J2, J3, J4, J5, J6 BANANA JACK CONNECTOR KEYSTONE, 575-4
4 3 J7, J8, J9 CONN., RF, BNC, RCPT, THT, STR, 5-PIN AMPHENOL CONNEX, 112404
5 1 J10 HEADER, 4-PIN 2mm STR DL HIROSE, DF3A-4P-2DSA
6 1 J11 HEADER, 12-PIN 2mm STR DL FCI 98414-G06-12ULF
7 1 J12 CONN., HDR, FEMALE, 2x7, 2mm, R/A THT SULLINS CONNECTOR SOLUTIONS,
NPPN072FJFN-RC
8 1 J13 CONN., HDR, MALE, 2x7, 2mm, R/A THT MOLEX, 87760-1416
9 2 SW0, SW1 SWITCH, SUBMINIATURE SLIDE C&K JS202011CQN
10 3 XJP1, XJP2, XJP3 SHUNT WURTH ELEKTRONIK 60800213421
11 4 STANDOFF STANDOFF, NYLON, SNAP-ON, 0.50" WURTH ELEKTRONIK, 702935000
16
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
2. ALL CAPACITORS ARE IN MICROFARADS, 0603.
3 PRODUCTION GL 6-20-18
6V - 20V
25V 25V
25V
WP
ON
OFF
OPTION FOR DUAL PHASE SINGLE OUTPUT CIRCUIT CONFIGURATION CONNECTION
FP1007R3-R30-R
1.0V AT 20A
FP1007R3-R30-R
1.0V AT 20A
25V 25V
1210 1210
DCR=0.29mOhm
DCR=0.29mOhm
1210 1210
6-20-18
VIN
INTVCC
VDD25
VDD33
VIN1
EXTVCC
VIN VIN1
VDD33
EXTVCC
INTVCC
VDD33
VDD25
INTVCC
VOUT0
INTVCC
VOUT1
VDD33
VDD25
ITH0
ITH1
SCL
SDA
SHARE_CLK
SYNC
ALERTB
RUN1
RUN0
FAULT0B FAULT1B
VOUT1
VSENSE0- VSENSE1-
ITH0 ITH1
RUN0 RUN1
VSENSE0+ VSENSE1+
PGOOD0 PGOOD1
VOUT0
VSENSE0+
VSENSE0-
VSENSE0+
VSENSE0-
VSENSE1+
VSENSE1-
VSENSE1+
VSENSE1-
FAULT0B
FAULT1B
PGOOD0
PGOOD1
ITH_R0 ITH_R1
ITH_R0
ITH_R1
VOUT0
VOUT1
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
__
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
13
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-A
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
13
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-A
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
13
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-A
DC2666A_REV03
N/A
LTC7132IY
R18 OPT
E3
VOUT0+
R31 OPT
R17 0
CIN4
22uF
E11
EXTVCC
JP1
1
2
3
R14
931
1%
R27 OPT
E15
VDD25
C16
0.1uF
+
COUT11
330uF
6.3V
7343
+
C3
OPT
25V
E1
VIN+
D2
CMDSH-3-TR
R39
10K
R42
OPT
Q1
MMST3906-7-F
SOT-323
J1
VIN
R35 OPT
CIN1
22uF
C9
0.1uF
R10
4.99K
R16
10
R41
OPT
R15
0
J5
VOUT1
J2
GND
R9
10K
R40
10K
C8
4.7uF
D1
CMDSH-3-TR
R6
10K
R11
4.99K
C5
1uF
J6
GND
R46
OPT
2512
J3
VOUT0
R45
OPT
+
C2
180uF
25V
R29 OPT
L1
0.3uH
+
COUT4
330uF
6.3V
7343
R36 OPT
Q2
MMST3906-7-F
SOT-323
C15
10nF
C4 2.2uF
J4
GND
C17
10nF
COUT1
100uF
1210
6.3V
E6
VOUT1-
R32
OPT
R24 OPT
R19
10
CIN3
22uF
R37
10K
R44
OPT
C6 4.7uF C7
OPT
R48
OPT
R13
10
C14 2200pF
C11 150pF E5
VOUT1+
R34 OPT
R2
1
E13
INTVCC
R20
931
1%
R22
10
R38
10K
C13 150pF
R1
0.005, 1%, 1W
2512
R7
10K
COUT5
100uF
1210
6.3V
L2
0.3uH
R210
COUT2
100uF
1210
6.3V
R3
0
E14
VDD33
R43
OPT
2512
COUT12
100uF
1210
6.3V
R4
0
COUT8
100uF
1210
6.3V
COUT6
100uF
1210
6.3V
R33 OPT
C10
220nF
E8
FAULT0B
R47
OPT
C18
220nF
R8
4.99K
E2
VIN-
E10
PGOOD0
E16
SGND
COUT9
100uF
1210
6.3V
E9
FAULT1B
+
COUT14
OPT
6.3V
7343
R30 OPT
R5
10K
+
COUT3
330uF
6.3V
7343
+
COUT7
OPT
6.3V
7343
E4
VOUT0-
R28 OPT
R25 OPT
C1 2.2uF
E12
PGOOD1
R12
4.99K
R23 0
R26 OPT
COUT13
100uF
1210
6.3V
C12 2200pF
+
COUT10
330uF
6.3V
7343
R49
OPT
U1
LTC7132
EXTVCC
D9
SYNC
A4
SCL
B3
SDA
A3
PVIN0 J6
PVIN0 H7
WP
E4
ITH_R0
B7
ITH_R1
E6
ITH0
A7
FAULT1B B1
FAULT0B A1
ITH1
E5
TSNS0
A5
ASEL0
D1
VDD25 F3
VDD33 F4
INTVCC E10
PVIN0 K6
PVIN0 K7
PVIN0 L6
ALERTB
A2
PVIN0 J7
PVIN0 L7
PVIN0 M6
PVIN0 M7
PVIN1 H1
PVIN1 H2
PVIN1 J1
PVIN1 J2
PVIN1 K1
PVIN1 K2
PVIN1 L1
PVIN1 L2
IIN+ B10
IIN- B9
SHARE_CLK
E3
RUN0
C1
RUN1
C2
TSNS1
B5
ASEL1
E1
VOUT0_CFG
D2
VOUT1_CFG
F1
FREQ_CFG
E2
PHASE_CFG
F2
ISENSE0+ B6
ISENSE0- A6
VSENSE0+ A9
VSENSE0- A10
SW1
N1
SW1
N2
SW1
N3
SW1
N4
SW1
N5
SW1
P1
SW1
P2
SW1
P3
SW1
P4
SW1
P5
SW0
N6
SW0
N7
SW0
N8
SW0
N9
SW0
N10
SW0
P6
SW0
P7
SW0
P8
SW0
P9
SW0
P10
ISENSE1+ A8
ISENSE1- B8
VSENSE1+ F7
VSENSE1- E7
BOOST0 C9
BOOST1 F10
PVIN0 G6
PVIN0 G7
PVIN0 G10
PVIN0 G8
SW0
C10
SW1
F9
PGND
D10
PGND
G1
PGND
G2
PGND
G3
PGND
G4
PGND
G5
PGND
H3
PGND
H4
PGND
H5
PGND
H8
PGND
H9
PGND
H10
PGND
J3
PGND
J4
PGND
J5
PGND
J8
PGND
J9
PGND
J10
PGND
K3
PGND
K4
PGND
K5
PGND
K8
PGND
K9
PGND
K10
PGND
L3
PGND
L4
PGND
L5
PGND
L8
PGND
L9
PGND
L10
PGND
M3
PGND
M4
PGND
M5
PGND
M8
PGND
M9
PGND
M10
PVIN0 G9
PGOOD0 C8
PGOOD1 F8
SVIN D8
SGND
D5
SGND
D4
SGND
D3
SGND
C7
SGND
C6
SGND
C5
SGND
C4
SGND
C3
SGND
D6
SGND
D7
NC
B2
NC
B4
NC
E8
NC
E9
NC
F5
NC
F6
PVIN0 H6
PVIN1 M1
PVIN1 M2
CIN2
22uF
SCL
SDA
ALERTB
SHARE_CLK
RUN1
RUN0
SYNC
Figure 13a. DC2666A-A Demo Circuit Schematic, Sheet 1
17
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
VOUT0
VOUT1
PULSE
DYNAMIC LOAD TEST CIRCUIT, FOR DEMO BOARD ONLY
70Hz, 3% Duty Cycle
INT EXT
1%
1%
IOUT STEP
OPTIONAL 5.5V BIAS
OPT
2512 2512
OPT
BLEEDER LOADS
ON
OFF
BIAS
6-20-18
+5.5V
EXTVCC
VIN
+5.5V
VOUT0
VOUT1
VOUT0
VOUT1
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
23
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-A
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
23
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-A
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
23
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-A
DC2666A_REV03
N/A
LTC7132IY
R51
R67
249
R64
20K
R63
3.3
1%
C22
100uF
1210
6.3V
E18
GND
J7
1
2
R66
10K
R62
20K
C23
100nF
R60 0
JP2
1
2
3
C26
1.0uF
R68
82.5
1%
COUT16
1.0uF
R52
C20
10uF
25V
1210
R55
10K
Q4
C25
1.0uF
J9
1
2
R61 1M
R65
681K
1%
U3 LTC6992IS6-1
MOD
1
GND
2
SET
3DIV 4
V+ 5
OUT 6
C19
10uF
25V
1210
Q3
SUD50N04-8M8P-4GE3
U4
LT1803IS5
VOUT 1
V-
2
+IN
3-IN 4
V+
5
R69
0.01
2512
R54
34.8K
1%
R53
10K
JP3
1
2
3
R57
2
E17
EXT PULSE
R72
649
C21
OPT
1210
6.3V
C24
150pF
R71
5K
R59
154k
1%
R56 0
2010
R50
OPT
R58 OPT
2010
COUT15
1.0uF
U2 LT1761ES5-SD
IN
1
ADJ 4
SHDN
3
GND
2
OUT 5
R70
OPT
2512
J8
1
2
Figure 13b. DC2666A-A Demo Circuit Schematic, Sheet 2
18
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN
PGOOD0 PGOOD1
TO DC2086A
ON
OFF
ON
OFF
RUN0
RUN1TO DC1613A
1206
FAULT0B FAULT1B
ALERTB
OPT
DEMO HEADER (M)DEMO HEADER (F)
6-20-18
3V33V3
VDD33
3V3
VIN
3V3
VIN
3V3
VDD33
3V33V33V3
PGOOD1
PGOOD0
ALERTB SDA SCL
RUN0
RUN1
FAULT1B
FAULT0B
SYNC
SHARE_CLK
FAULT0B FAULT1B
ALERTB
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
33
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-A
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
33
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-A
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
33
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-A
DC2666A_REV03
N/A
LTC7132IY
R78
OPT
SW1
1
2
34
5
6
J10
AUX3V4 4
SCL 3
GND 2
1
SDA
J12
FAULTB 1
CTRL 2
ALERTB 3
SDA 4
SHARE_CLK 5
SCL 6
RESETB 7
AUXP 8
UNUSED 9
UNUSED 10
GND 11
GND 12
12V 13
12V 14
D8 GREEN
E23
SHARE_CLK
J11
AUXP 1
SDA 2
GND 3
SCL 4
LGKPWR 5
ALERTB 6
GPIO_1 7
OUTEN_0 8
OUTEN_1 9
GND 10
AUXSCL 11
AUXSDA 12
D7 GREEN
R89
OPT
R80
OPT
R74
OPT
D5
OPT
E21
SDA
R97
127
E22
SCL
R88
OPT
R92
200
R73 OPT
R75 0
U5
24LC024-I/ST
A0
1
A1
2
A2
3
VSS
4SDA 5
SCL 6
WP 7
VCC 8
D3 21
R96
OPT
D4
OPT
R81 OPT
E30
GND
R84
4.99K
R93
200
E28
RUN1
Q8
2N7002A
2 3
1
E26
AUXP
D10 RED
R83
10
R82
10
R95
OPT
D6 GREEN
R79
0
Q9
2N7002A
2 3
1
R77 0
R87 OPT
Q10
2N7002A
2 3
1
SW0
1
2
34
5
6
E24
SYNC
E20
ALERTB
C29
10nF
R85
4.99K
C28
10nF
Q6
DMP3130L-7
23
1
C27
100nF
R94
200
Q7
2N7002A
2 3
1
R91
200
R90 OPT
Q5
SI2365EDS-T1-GE3
23
1
D9
GREEN
R86
OPT
R76
OPT
J13
FAULTB
1
CTRL
2
ALERTB
3
SDA
4
SHARE_CLK
5
SCL
6
RESETB
7
AUXP
8
UNUSED
9
UNUSED
10
GND
11
GND
12
12V
13
12V
14
E27
RUN0
EEWP
EESDA
AUX3V4
AUXVCC
EESCL
Figure 13c. DC2666A-A Demo Circuit Schematic, Sheet 3
19
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
2. ALL CAPACITORS ARE IN MICROFARADS, 0603.
3PRODUCTION GL 6-20-18
6V - 20V
25V 25V
25V
WP
ON
OFF
OPTION FOR DUAL PHASE SINGLE OUTPUT CIRCUIT CONFIGURATION CONNECTION
FP1007R3-R30-R
1.0V AT 20A
FP1007R3-R30-R
1.0V AT 20A
25V 25V
1210 1210
DCR=0.29mOhm
DCR=0.29mOhm
1210 1210
6-20-18
VIN
INTVCC
VDD25
VDD33
VIN1
EXTVCC
VIN VIN1
VDD33
EXTVCC
INTVCC
VDD33
VDD25
INTVCC
VOUT0
INTVCC
VOUT1
VDD33
VDD25
ITH0
ITH1
SCL
SDA
SHARE_CLK
SYNC
ALERTB
RUN1
RUN0
FAULT0B FAULT1B
VOUT1
VSENSE0- VSENSE1-
ITH0 ITH1
RUN0 RUN1
VSENSE0+ VSENSE1+
PGOOD0 PGOOD1
VOUT0
VSENSE0+
VSENSE0-
VSENSE0+
VSENSE0-
VSENSE1+
VSENSE1-
VSENSE1+
VSENSE1-
FAULT0B
FAULT1B
PGOOD0
PGOOD1
ITH_R0 ITH_R1
ITH_R0
ITH_R1
VOUT0
VOUT1
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
__
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
13
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-B
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
13
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-B
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
13
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-B
DC2666A_REV03
N/A
LTC7132IY
R18 OPT
E3
VOUT0+
R31 OPT
R17 0
CIN4
22uF
E11
EXTVCC
JP1
1
2
3
R14
931
1%
R27 OPT
E15
VDD25
C16
0.1uF
+
COUT11
330uF
6.3V
7343
+
C3
OPT
25V
E1
VIN+
D2
CMDSH-3-TR
R39
10K
R42
0
Q1
MMST3906-7-F
SOT-323
J1
VIN
R35 OPT
CIN1
22uF
C9
0.1uF
R10
4.99K
R16
10
R41
0
R15
0
J5
VOUT1
J2
GND
R9
10K
R40
10K
C8
4.7uF
D1
CMDSH-3-TR
R6
10K
R11
4.99K
C5
1uF
J6
GND
R46
1m
2512
J3
VOUT0
R45
0
+
C2
180uF
25V
R29 OPT
L1
0.3uH
+
COUT4
330uF
6.3V
7343
R36 OPT
Q2
MMST3906-7-F
SOT-323
C15
10nF
C4 2.2uF
J4
GND
C17
10nF
COUT1
100uF
1210
6.3V
E6
VOUT1-
R32
OPT
R24 OPT
R19
OPT
CIN3
22uF
R37
10K
R44
0
C6 4.7uF C7
OPT
R48
0
R13
10
C14 OPT
C11 220pF E5
VOUT1+
R34 OPT
R2
1
E13
INTVCC
R20
931
1%
R22
OPT
R38
10K
C13 10pF
R1
0.005, 1%, 1W
2512
R7
10K
COUT5
100uF
1210
6.3V
L2
0.3uH
R210
COUT2
100uF
1210
6.3V
R3
0
E14
VDD33
R43
1m
2512
COUT12
100uF
1210
6.3V
R4
0
COUT8
100uF
1210
6.3V
COUT6
100uF
1210
6.3V
R33 OPT
C10
220nF
E8
FAULT0B
R47
0
C18
220nF
R8
4.99K
E2
VIN-
E10
PGOOD0
E16
SGND
COUT9
100uF
1210
6.3V
E9
FAULT1B
+
COUT14
OPT
6.3V
7343
R30 OPT
R5
10K
+
COUT3
330uF
6.3V
7343
+
COUT7
OPT
6.3V
7343
E4
VOUT0-
R28 OPT
R25 OPT
C1 2.2uF
E12
PGOOD1
R12
4.99K
R23 0
R26 OPT
COUT13
100uF
1210
6.3V
C12 4700pF
+
COUT10
330uF
6.3V
7343
R49
0
U1
LTC7132
EXTVCC
D9
SYNC
A4
SCL
B3
SDA
A3
PVIN0 J6
PVIN0 H7
WP
E4
ITH_R0
B7
ITH_R1
E6
ITH0
A7
FAULT1B B1
FAULT0B A1
ITH1
E5
TSNS0
A5
ASEL0
D1
VDD25 F3
VDD33 F4
INTVCC E10
PVIN0 K6
PVIN0 K7
PVIN0 L6
ALERTB
A2
PVIN0 J7
PVIN0 L7
PVIN0 M6
PVIN0 M7
PVIN1 H1
PVIN1 H2
PVIN1 J1
PVIN1 J2
PVIN1 K1
PVIN1 K2
PVIN1 L1
PVIN1 L2
IIN+ B10
IIN- B9
SHARE_CLK
E3
RUN0
C1
RUN1
C2
TSNS1
B5
ASEL1
E1
VOUT0_CFG
D2
VOUT1_CFG
F1
FREQ_CFG
E2
PHASE_CFG
F2
ISENSE0+ B6
ISENSE0- A6
VSENSE0+ A9
VSENSE0- A10
SW1
N1
SW1
N2
SW1
N3
SW1
N4
SW1
N5
SW1
P1
SW1
P2
SW1
P3
SW1
P4
SW1
P5
SW0
N6
SW0
N7
SW0
N8
SW0
N9
SW0
N10
SW0
P6
SW0
P7
SW0
P8
SW0
P9
SW0
P10
ISENSE1+ A8
ISENSE1- B8
VSENSE1+ F7
VSENSE1- E7
BOOST0 C9
BOOST1 F10
PVIN0 G6
PVIN0 G7
PVIN0 G10
PVIN0 G8
SW0
C10
SW1
F9
PGND
D10
PGND
G1
PGND
G2
PGND
G3
PGND
G4
PGND
G5
PGND
H3
PGND
H4
PGND
H5
PGND
H8
PGND
H9
PGND
H10
PGND
J3
PGND
J4
PGND
J5
PGND
J8
PGND
J9
PGND
J10
PGND
K3
PGND
K4
PGND
K5
PGND
K8
PGND
K9
PGND
K10
PGND
L3
PGND
L4
PGND
L5
PGND
L8
PGND
L9
PGND
L10
PGND
M3
PGND
M4
PGND
M5
PGND
M8
PGND
M9
PGND
M10
PVIN0 G9
PGOOD0 C8
PGOOD1 F8
SVIN D8
SGND
D5
SGND
D4
SGND
D3
SGND
C7
SGND
C6
SGND
C5
SGND
C4
SGND
C3
SGND
D6
SGND
D7
NC
B2
NC
B4
NC
E8
NC
E9
NC
F5
NC
F6
PVIN0 H6
PVIN1 M1
PVIN1 M2
CIN2
22uF
SCL
SDA
ALERTB
SHARE_CLK
RUN1
RUN0
SYNC
Figure 14a. DC2666A-B Demo Circuit Schematic, Sheet 1
20
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
VOUT0
VOUT1
PULSE
DYNAMIC LOAD TEST CIRCUIT, FOR DEMO BOARD ONLY
70Hz, 3% Duty Cycle
INT EXT
1%
1%
IOUT STEP
OPTIONAL 5.5V BIAS
OPT
2512 2512
OPT
BLEEDER LOADS
ON
OFF
BIAS
6-20-18
+5.5V
EXTVCC
VIN
+5.5V
VOUT0
VOUT1
VOUT0
VOUT1
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
23
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-B
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
23
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-B
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
23
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-B
DC2666A_REV03
N/A
LTC7132IY
R51
R67
249
R64
20K
R63
3.3
1%
C22
100uF
1210
6.3V
E18
GND
J7
1
2
R66
10K
R62
20K
C23
100nF
R60 0
JP2
1
2
3
C26
1.0uF
R68
82.5
1%
COUT16
1.0uF
R52
C20
10uF
25V
1210
R55
10K
Q4
C25
1.0uF
J9
1
2
R61 1M
R65
681K
1%
U3 LTC6992IS6-1
MOD
1
GND
2
SET
3DIV 4
V+ 5
OUT 6
C19
10uF
25V
1210
Q3
SUD50N04-8M8P-4GE3
U4
LT1803IS5
VOUT 1
V-
2
+IN
3-IN 4
V+
5
R69
0.01
2512
R54
34.8K
1%
R53
10K
JP3
1
2
3
R57
2
E17
EXT PULSE
R72
649
C21
OPT
1210
6.3V
C24
150pF
R71
5K
R59
154k
1%
R56 0
2010
R50
OPT
R58 OPT
2010
COUT15
1.0uF
U2 LT1761ES5-SD
IN
1
ADJ 4
SHDN
3
GND
2
OUT 5
R70
OPT
2512
J8
1
2
Figure 14b. DC2666A-B Demo Circuit Schematic, Sheet 2
21
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN
PGOOD0 PGOOD1
TO DC2086A
ON
OFF
ON
OFF
RUN0
RUN1TO DC1613A
1206
FAULT0B FAULT1B
ALERTB
OPT
DEMO HEADER (M)DEMO HEADER (F)
6-20-18
3V33V3
VDD33
3V3
VIN
3V3
VIN
3V3
VDD33
3V33V33V3
PGOOD1
PGOOD0
ALERTB SDA SCL
RUN0
RUN1
FAULT1B
FAULT0B
SYNC
SHARE_CLK
FAULT0B FAULT1B
ALERTB
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
33
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-B
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
33
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-B
DC2666A_REV03
N/A
LTC7132IY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO.
IC NO.
ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES
APPLICATIONS ENGINEERING FOR ASSISTANCE.
33
HZ
GL
DUAL OUTPUT MONOLITHIC PSM BUCK CONVERTER
DC 2666A-B
DC2666A_REV03
N/A
LTC7132IY
R78
OPT
SW1
1
2
34
5
6
J10
AUX3V4 4
SCL 3
GND 2
1
SDA
J12
FAULTB 1
CTRL 2
ALERTB 3
SDA 4
SHARE_CLK 5
SCL 6
RESETB 7
AUXP 8
UNUSED 9
UNUSED 10
GND 11
GND 12
12V 13
12V 14
D8 GREEN
E23
SHARE_CLK
J11
AUXP 1
SDA 2
GND 3
SCL 4
LGKPWR 5
ALERTB 6
GPIO_1 7
OUTEN_0 8
OUTEN_1 9
GND 10
AUXSCL 11
AUXSDA 12
D7 GREEN
R89
OPT
R80
OPT
R74
OPT
D5
OPT
E21
SDA
R97
127
E22
SCL
R88
OPT
R92
200
R73 OPT
R75 0
U5
24LC024-I/ST
A0
1
A1
2
A2
3
VSS
4SDA 5
SCL 6
WP 7
VCC 8
D3 21
R96
OPT
D4
OPT
R81 OPT
E30
GND
R84
4.99K
R93
200
E28
RUN1
Q8
2N7002A
2 3
1
E26
AUXP
D10 RED
R83
10
R82
10
R95
OPT
D6 GREEN
R79
0
Q9
2N7002A
2 3
1
R77 0
R87 OPT
Q10
2N7002A
2 3
1
SW0
1
2
34
5
6
E24
SYNC
E20
ALERTB
C29
10nF
R85
4.99K
C28
10nF
Q6
DMP3130L-7
23
1
C27
100nF
R94
200
Q7
2N7002A
2 3
1
R91
200
R90 OPT
Q5
SI2365EDS-T1-GE3
23
1
D9
GREEN
R86
OPT
R76
OPT
J13
FAULTB
1
CTRL
2
ALERTB
3
SDA
4
SHARE_CLK
5
SCL
6
RESETB
7
AUXP
8
UNUSED
9
UNUSED
10
GND
11
GND
12
12V
13
12V
14
E27
RUN0
EEWP
EESDA
AUX3V4
AUXVCC
EESCL
Figure 14c. DC2666A-B Demo Circuit Schematic, Sheet 3
22
DEMO MANUAL
DC2666A-A/DC2666A-B
Rev. 0
ANALOG DEVICES, INC. 2021
03/21
www.analog.com
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
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