Analog Devices LINEAR DC2672A-A Quick setup guide

DEMO MANUAL DC2672A-A

Rev. 0

DESCRIPTION

LTM4664

48VIN, Dual 25A µModule Regulator

With Digital Power System Management

Demonstration circuit 2672A-A is a complete non-iso-

lated 48V input, dual-output, high efficiency, high density

µModule regulator with 30V to 58V input range. Each

output can supply 25A maximum load current. The demo

board has a LTM4664 µModule regulator, which is a dual

25A or single 50A step-down regulator with digital power

system management. Please see the LTM4664 datasheet

for more detailed information.

DC2672A-A powers up to default settings and produces

power based on configuration resistors without the need

for any serial bus communication. This allows easy evalu-

ation of the DC/DC converter. To fully explore the extensive

power system management features of the part, download All registered trademarks and trademarks are the property of their respective owners.

the GUI software LTpowerPlay™onto your PC and use

ADI’s I2C/SMBus/PMBus dongle DC1613A to connect to

the board. LTpowerPlay allows the user to reconfigure the

part on the fly and store the configuration in EEPROM, view

telemetry of voltage, current, temperature and fault status.

GUI Download

The software can be downloaded here.

For more details and instructions of LTpowerPlay, please

refer to LTpowerPlay GUI for LTM4664 Quick Start Guide.

Design files for this circuit board are available.

BOARD PHOTO

Figure1. Dual-output LTM4664/DC2672A-A Demo Circuit

DEMO MANUAL DC2672A-A

Rev. 0

QUICK START PROCEDURE

Demonstration circuit 2672A-A is easy to set up to evalu-

ate the performance of the LTM4664. Refer to Figure2

for the proper measurement equipment setup and follow

the procedure below.

1. With power off, connect the input power supply to VIN

(30V-58V) and GND (input return).

2. Connect the 1.0V output load between VOUT0 and GND

(Initial load: no load).

3. Connect the 1.0V output load between VOUT1 and GND

(Initial load: no load).

4. Connect the DVMs to the input and outputs. Set de-

fault jumper position:SW1:ON;SW2:ON;SW3:ON;

JP1: OFF; JP2: EXT.

5. Turn on the input power supply and check for the

proper output voltages. VOUT0 should be 1.0V±0.5%,

and VOUT1 should be 1.0V±0.5%.

6. Once the proper output voltages are established, adjust

the loads within the operating range and observe the

output voltage regulation, ripple voltage and other

parameters.

7. Connect the dongle and control the output voltages

from the GUI. See “LTpowerPlay GUI for the LTM4664

Quick Start Guide” for details.

Note:When measuring the output or input voltage rip-

ple, do not use the long ground lead on the oscilloscope

probe. See Figure3 for the proper scope probe technique.

Short, stiff leads need to be soldered to the (+) and (−)

terminals of an output capacitor. The probe’s ground ring

needs to touch the (−) lead and the probe tip needs to

touch the (+) lead.

Table1. LTM4664 Demo Boards for up to 200A Point-of-Load Regulation

MAXIMUM OUTPUT CURRENT NUMBER OF OUPUTS

NUMBER OF LTM4664 µMODULE

REGULATORS ON THE BOARD DEMO BOARD NUMBER

25A 2 1 DC2672A-A

50A 1 1 DC2672A-B

100A 1 2 DC2954A-A

150A 1 3 DC2954A-B

200A 1 4 DC2954A-C

PERFORMANCE SUMMARY

Specifications are at TA= 25°C

PARAMETER CONDITIONS VALUE

Input Voltage Range 30V to 58V

Output Voltage, VOUT0 VIN = 30-58V, IOUT0 = 0A to 25A 0.5 to 1.5V, Default: 1.0V

Maximum Output Current, IOUT0 VIN = 30-58V, VOUT0 = 0.5V to 1.5V 25A

Output Voltage, VOUT1 VIN = 30-58V, IOUT1 = 0A to 25A 0.5 to 1.5V, Default: 1.0V

Maximum Output Current, IOUT1 VIN = 30-58V, VOUT1 = 0.5V to 1.5V 25A

Typical Efficiency of CH0 VIN = 48V, VOUT0 = 1.0V, IOUT0 = 25A 87.0% (See Figure5)

Typical Efficiency of CH1 VIN = 48V, VOUT1 = 1.5V, IOUT1 = 25A 89.4% (See Figure6)

Default Switching Frequency 250kHz

DEMO MANUAL DC2672A-A

Rev. 0

QUICK START PROCEDURE

Figure2. Proper Measurement Equipment Setup

DEMO MANUAL DC2672A-A

Rev. 0

QUICK START PROCEDURE

VOUT GND

COUT

Figure3. Measuring Output Voltage Ripple

Figure4. Demo setup with PC

Connecting a PC to DC2672A-A

You can use a PC to reconfigure the power manage-

ment features of the LTM4664 such as:nominal V

OUT

margin set points, OV/UV limits, temperature fault limits,

sequencing parameters, the fault log, fault responses,

GPIOs and other functionalities. The DC1613A dongle

may be plugged when VIN is present.

USB to I2C/PMBus

Dongle DC1613A

LTM4664 Demo

Board DC2672A-A

Input Power

Supply

USB Cable VIN

12-PIN (J11)

Connector

Load0

Vout0

Vout1

Load1

LOAD CURRENT (A)

EFFICIENCY (%)

15 2520105

VIN = 30V

VIN = 48V

VIN = 58V

LOAD CURRENT (A)

EFFICIENCY (%)

15 2520105

VIN = 30V

VIN = 48V

VIN = 58V

Efficiency vs Load at VOUT0 = 1.0V Efficiency vs Load at VOUT1 = 1.5V

Figure5. Efficiency vs. Load Current on CH0 (CH1 is Disabled) Figure6. Efficiency vs. Load Current on CH1 (CH0 is Disabled)

DEMO MANUAL DC2672A-A

Rev. 0

QUICK START PROCEDURE

Figure7. VOUT0 Load Transient Response

at VIN = 48V, VOUT0 = 1.0V

Figure8. VOUT1 Load Transient Response

at VIN = 48V, VOUT1 = 1.0V

100μs/DIV

0A-6.25A

LOAD STEP

VOUT0 (20MHz BW)

20mV/DIV

100μs/DIV

0A-6.25A

LOAD STEP

VOUT1 (20MHz BW)

20mV/DIV

Figure11. Thermal at VIN = 48V, VOUT0 = 1.0V, IOUT0 = 25A,

VOUT1 = 1.0V, IOUT1 = 25A, TA= 25°C, No Airflow

Figure9. VOUT0 Voltage Ripple

at VIN = 48V, VOUT0 = 1.0V, IOUT0 = 25A

Figure10. VOUT1 Voltage Ripple

at VIN = 48V, VOUT1 = 1.0V, IOUT1 = 25A

100μs/DIV

VOUT0 (20MHz BW)

10mV/DIV

100μs/DIV

VOUT1 (20MHz BW)

20mV/DIV

DEMO MANUAL DC2672A-A

Rev. 0

QUICK START PROCEDURE

Figure12. LTpowerPlay Main Interface

LTpowerPlay Software GUI

LTpowerPlay is a powerful Windows based development

environment that supports Analog Devices power sys-

tem management ICs and μModules, including LTM4675,

LTM4676, LTM4677, LTM4678, LTM4680, LTM4700,

LTM4664, LTC3880, LTC3882, LTC3883 and LTC3884.

The software supports a variety of different tasks. You

can use LTpowerPlay to evaluate Analog Devices ICs by

connecting to a demo board system. LTpowerPlay can

also be used in an offline mode (with no hardware pres-

ent) in order to build a multichip configuration file that

can be saved and reloaded at a later time. L

TpowerPlay

provides unprecedented diagnostic 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 tar-

gets, including LTM4675, LTM4676, LTM4677, LTM4678,

LTM4680, LTM4700, LTM4664, LTC3880, LTC3882,

LTC3883 and LTC3884’s demo system, or a customer

board. 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 here.

To access technical support documents for LTC Digital

Power Products visit the LTpowerPlay Help menu. Online

help also available through the LTpowerPlay.

DEMO MANUAL DC2672A-A

Rev. 0

QUICK START PROCEDURE

LTpowerPlay Quick Start Procedure

The following procedure describes how to use LTpow-

erPlay to monitor and change the settings of LTM4664.

1.Download and install the LTPowerPlay GUI:

2. Launch the LTpowerPlay GUI.

a. The GUI should automatically identify the DC2672A-A.

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 LTM4664 is com-

municating:

c. In the Toolbar, click the “R” (RAM to PC) icon to read

the RAM from the LTM4664. This reads the configuration

from the RAM of LTM4664 and loads it into the GUI.

d. If you want to change the output voltage to a differ-

ent value, like 1.5V. In the Config tab, type in 1.5 in the

VOUT_COMMAND box, like this:

Then, click the “W” (PC to RAM) icon to write these regis-

ter values to the LTM4664. After finishing this step, you

will see the output voltage will change to 1.5V.

If the write is successful, you will see the following message:

e. You can save the changes into the NVM. In the tool bar,

click “RAM to NVM” button, as following

f. Save the demo board configuration to a (*.proj) file. Click

the Save icon and save the file. Name it whatever you want.

DEMO MANUAL DC2672A-A

Rev. 0

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART, NUMBER

Required Circuit Components

1 4 COUT1, COUT2, COUT9, COUT12 CAP, 1210 100uF 20% 6.3V X5R AVX, 12106D107MAT2A

2 8 COUT3, COUT4, COUT5, COUT6,

COUT10, COUT13, COUT14,

COUT15

CAP

, 1210 330uF 20% 4V X5R TAIYO YUDEN, AMK325ABJ337MM-P

3 2 C1, C19 CAP, 0603 3900pF 5% 50V C0G KEMET, C0603C392J5GACAUTO

4 4 C2, C3, C56, C57 CAP, 1210 22uF 20% 25V X7R AVX, 12103C226MAT2A

5 18 C4, C5, C9, C10, C11, C12, C13,

C14, C20, C21, C23, C24, C25,

C26, C27, C28, C29, C30

CAP

, 1210 10uF 10% 50V X7R MURATA, GRM32ER71H106KA12L

6 2 C8, C22 CAP, 22pF, C0G, 50V, 5%, 0603 AVX, 06035A220JAT2A

7 2 C16, C43 CAP, 0603 0.47uF 10% 16V X7R KEMET, C0603C474K4RAC7800

8 6 C17, C18, C31, C32, C41, C42 CAP, 0603 4.7uF 20% 25V X5R TDK, C1608X5R1E475M080AC

9 1 C34 CAP, 33uF 20% 80V ALUM. PANASONIC, EEHZC1K330P

10 6 C35, C36, C37, C38, C39, C40 CAP, 1210 2.2uF 10% 100V X7R MURATA, GRM32ER72A225KA35L

11 1 C44 CAP, 0.01uF, X7R, 16V, 10%, 0603 AVX, 0603YC103KAT2A

12 1 RS1 RES, 1206 0.002 OHMS 1% 1W PANASONIC, ERJMP2MF2M0U

13 1 RS3 RES, 1206 0.01 OHMS 1% 1W PANASONIC, ERJMP2MF10MU

14 4 R1, R7, R16, R23 RES, 0603 10 OHMS 1% 1/10W VISHAY, CRCW060310R0FKEA

15 5 R4, R13, R17, R18, R117 RES, 0603 0 OHMS JUMPER VISHAY, CRCW06030000Z0EA

16 16 R9, R10, R25, R26, R27, R28,

R29, R30, R31, R32, R33, R34,

R35, R36, R41, R42

RES, 0603 10k OHMS 1% 0.1W VISHAY, CRCW060310K0FKEA

17 1 R14 RES, 0603 10.5k OHMS, 1%, 1/10W VISHAY, CRCW060310K5FKEA

18 1 R19 RES, 0603 64.9k OHMS 1% 0.1W VISHAY, CRCW060364K9FKEA

19 2 R20, R37 RES, 0603 100k OHMS 1% 1/10W VISHAY, CRCW0603100KFKEA

20 1 R24 RES, 0603 75k OHMS 1% 1/10W VISHAY, CRCW060375K0FKEA

21 1 R38 RES, 100k OHMS, 1%, 1/8W, 0805,

AEC-Q200

NIC, NRC10F1003TRF

22 1 R39 RES, 0603 40.2k OHMS 1% 1/10W VISHAY, CRCW060340K2FKEA

23 1 R40 RES, 0603 4.99k OHMS, 1%, 1/10W PANASONIC, ERJ3EKF4991V

24 1 R55 RES, 0603 130k OHMS 1% 0.1W VISHAY, CRCW0603130KFKEA

25 1 R57 RES. 0603 9.76k OHMS, 1%, 1/10W VISHAY, CRCW06039K76FKEA

26 1 U1 IC, Module ANALOG DEVICES, LTM4664EY

Additional Demo Board Circuit Components

1 0 COUT7, COUT8, COUT11, CAP, 7343 OPTION OPTION

COUT16

2 0 C15 CAP, 0603 OPTION OPTION

3 0 D1 DIODE, OPTION OPTION

40 D3, D4 DIODE, SCHOTTKY 30V, 100mA OPTION CENTRAL SEMI, CMDSH-3-TR, OPTION

DEMO MANUAL DC2672A-A

Rev. 0

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART, NUMBER

5 0 R2, R3, R5, R6, R11, R12, R15,

R21, R22, R43, R44, R45, R46,

R47, R48, R49, R51, R52, R53,

R54, R56, R58, R59, R61, R62,

R64, R65, R67, R69, R92, R93,

R95, R97, R99, R100, R105,

R106, R107, R108, R109

RES, 0603 OPTION OPTION

6 0 R60, R63, R66, R68, R75 RES, 2010 OPTION OPTION

7 2 R70, R71 RES, 1206 100 OHMS 1% 1/4W PANASONIC, ERJ-8ENF1000V

8 2 C45, C46 CAP, 1210 10uF 10% 16V X7R MURATA, GRM32DR71C106KA01

9 4 R72, R74, R85, R114 RES, 0603 10K OHMS 5% 1/10W VISHAY, CRCW060310K0JNEA

10 1 R73 RES, 0603 34.8K OHM 1% 1/10W VISHAY, CRCW060334K8FKEA

11 1 U2 IC, REGULATOR ANALOG DEVICES, LT1761ES5-SD

12 1 R79 RES, 0603 154K OHMS 1% 1/10W VISHAY, CRCW0603154KFKEA

13 2 R80, R83 RES, 0603 20K OHMS 5% 1/10W VISHAY, CRCW060320K0JNEA

14 1 R77 RES, 2010 0 OHM JUMPER VISHAY, WSL201000000ZEA9

15 4 R78, R94, R96, R98 RES, 0603 0 OHMS JUMPER VISHAY, CRCW06030000Z0EA

16 1 R82 RES, 0603 1M OHMS 5% 1/10W VISHAY, CRCW06031M00JNEA

17 1 R84 RES, 0603 681K OHMS 1% 1/10W VISHAY, CRCW0603681KFKEA

18 1 U3 IC, LTC6992 ANALOG DEVICES, LTC6992IS6-1

19 1 U4 IC, SINGLE OP AMP ANALOG DEVICES, LT1803IS5

20 2 C49, C53 CAP, 0603 100nF 20% 16V X7R AVX, 0603YC104MAT2A

21 1 R86 RES, 0603 182 OHMS 1% 1/10W VISHAY, CRCW0603182RFKEA

22 1 R90 RES, VARIABLE 5K BOURNS, 3386P-1-502-LF

23 1 R91 RES, 0603 649 OHMS 1% 1/10W VISHAY, CRCW0603649RFKEA

24 1 R81 RES, 0603 3.3 OHMS 1% 1/10W VISHAY, CRCW06033R30FKEA

25 1 R87 RES, 0603 82.5 OHMS 1% 1/10W VISHAY, CRCW060382R5FKEA

26 1 C50 CAP, 0603 150pF 5% 50V NPO AVX, 06035A151JAT2A

27 1 R76 RES, 0603 2 OHMS 5% 1/10W VISHAY, CRCW06032R00JNEA

28 1 R88 RES, 2512 0.01 OHMS 1% 1W VISHAY, WSL2512R0100FEA

29 1 Q1 XSTR, MOSFET, N-CHANNEL 40V VISHAY, SUD50N04-8M8P-4GE3

30 4 COUT21, COUT25, C51, C52 CAP, 0603 1uF 20% 25V X5R AVX, 06033D105MAT2A

31 6 COUT19, COUT20, COUT23,

COUT24, C47, C48

CAP

, 1210 100uF 20% 6.3V X5R AVX, 12106D107MAT2A

32 4 COUT17, COUT18, COUT22, CAP, 7343 470uF 20% 2.5V SPCAP PANASONIC, EEF-GX0E471L

33 1 U5 IC, 24LC05-I/ST MICROCHIP, 24LC025-I/ST

34 2 R103, R104 RES, 0603 4.99K OHMS 1% 0.1W VISHAY, CRCW06034K99FKEA

35 3 R110, R111, R115 RES, 0603 127 OHMS 1% 1/10W VISHAY, CRCW0603127RFKEA

36 2 R112, R113 RES, 0603 200 OHMS 5% 1/10W VISHAY, CRCW0603200RJNEA

37 1 R116 RES, 0603 15.8K OHMS 1% 1/10W VISHAY, CRCW060315K8FKEA

38 1 D2 DIODE, ULTRA LOW SCHOTTKY RECTIEIER NXP SEMI., PMEG2005AEL, 315

39 2 D5, D6 LED, 0603 GREEN WURTH ELEKTRONIK, 150060GS75000

DEMO MANUAL DC2672A-A

Rev. 0

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART, NUMBER

40 3 D7, D8, D9 LED, 0603 RED WURTH ELEKTRONIK, 150060SS75000

41 4 Q3, Q4, Q6, Q7 XSTR, P-CHANNEL DMOS FET DIODES INC., DMP3130L-7

42 2 Q5, Q8 XSTR, N-CHANNEL DMOS FET DIODES, INC., 2N7002A-7

43 2 R101, R102 RES, 0603 10 OHMS 5% 1/10W VISHAY, CRCW060310R0JNEA

44 2 C54, C55 CAP, 0603 10nF 10% 25V X7R AVX, 06033C103KAT2A

Hardware: For Demo Board Only

1 33 E1, E2, E3, E4, E5, E6, E7, E8,

E9, E10, E11, E12, E13, E14,

E15, E16, E17, E18, E19, E20,

E21, E22, E23, E24, E25, E26,

E27, E28, E29, E30, E31, E32, E33

TURRET 1.64mm MILL-MAX, 2308-2-00-80-00-00-07-0

2 2 JP1, JP2 HEADER, SINGLE ROW 3PIN WURTH ELEKTRONIK, 62000311121

3 4 J1, J2, J3, J4 STUD, TEST PIN PEM, KFH-032-10

4 2 J5, J6 BANANA JACK KEYSTONE, 575-4

5 3 J7, J8, J9 CONN, BNC, 5 PINS CONNEX, 112404

6 1 J10 HEADER, 4PIN 2mm STR DL HIROSE, DF3A-4P-2DSA

7 1 J11 HEADER, 12PIN 2mm STR DL FCI, 98414-G06-12ULF

8 1 J12 CONN, SOCKET 14PIN DUAL ROW R/A SULLINS INC., NPPN072FJFN-RC

9 1 J13 HEADER, 14PIN DUAL ROW R/A MOLEX, 87760-1416

10 4 J1, J2, J3, J4 LUG RING, #10 KEYSTONE, 8205

11 4 MH1, MH2, MH3, MH4 STANDOFF, SNAP ON KEYSTONE, 8834

12 8 J1, J2, J3, J4 NUT, BRASS 10-32 PENCOM, NU1132

13 3 SW1, SW2, SW3 SWITCH, SUBMINATURE SLIDE C&K, JS202011CQN

14 4 J1, J2, J3, J4 WASHER, #10 TIN PLATED BRASS PENCOM, WA4526

15 2 XJP1, XJP2 SHUNT WURTH ELEKTRONIK, 60800213421

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