Analog Devices DC2552A Demo Manual: LTM4678 Dual 25A or Single 50A µModule Regulator
User guide for the DC2552A demo board featuring the LTM4678, a dual 25A or single 50A step-down µModule regulator with digital power system management and PMBus support.
Overview
Demonstration circuit 2552A is designed to evaluate the LTM4678, a high-efficiency, high-density step-down µModule regulator. It supports an input voltage range of 4.5V to 16V and provides dual outputs—configured by default to 1.0V and 1.8V—each capable of delivering up to 25A. The LTM4678 features digital power system management via PMBus, enabling users to reconfigure power settings on the fly and monitor telemetry data for voltage, current, temperature, and fault status using the LTpowerPlay GUI. The document provides a complete bill of materials, hardware setup procedures, and performance specifications including efficiency and ripple measurement techniques.
Use Cases
- High-current point-of-load regulation
- Telecommunications and networking equipment
- Industrial power systems
- Cloud computing and data center infrastructure
- System-level power monitoring and management
Topics
Referenced Parts
Vishay
25 9 R7, R9, R33, R63, R65, R66, R91, R92, R106 RES., CHIP, 0Ω 0603 VISHAY, CRCW06030000Z0EA
Vishay
26 14 R10–R16, R18, R19, R24, R52, R77, R94, R95 RES., CHIP, 10k, 1%, 0603 VISHAY, CRCW060310K0FKEA
Vishay
24 6 R3, R25, R32, R69, R70, R93 RES., CHIP, 10Ω, 1%, 0603 VISHAY, CRCW060310R0FKEA
Mill-Max
13 27 E1–E27 TESTPOINT, TURRET, .062" MILL-MAX, 2308-2-00-80-00-00-07-0
Murata
2 4 CIN2, CIN3, CIN4, CIN5 CAP., X5R, 10μF, 35V, 10%, 1210 MURATA, GRM32ER6YA106KA12
Sullins Connector Solutions
20 1 J11 CONN RECEPT 2MM DUAL R/A 14POS SULLINS, NPPN072FJFN-RC
Sullins Connector Solutions
35 2 SW1, SW0 HEADER, 3 PIN 0.079 SINGLE ROW SULLINS, NRPN031PAEN-RC
Analog Devices
supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883
Analog Devices
supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883
Analog Devices
supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883
Analog Devices
supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883
Analog Devices
supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883
Analog Devices
supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883
25A
Maxim
16V input range. Each output can supply 25A maximum
TO-236
Vishay
23 1 Q19 MOSFET P-CH 20V 5.9A TO-236 VISHAY, Si2365EDS-T1-GE3
TO-252
Vishay
22 1 Q1 MOSFET N-CH 40V 14A TO-252 VISHAY, SUD50N04-8M8P-4GE3
| 06033C151JAT2A | AVX | 6 1 C2 CAP., X7R, 150pF, 25V, 5%, 0603 AVX, 06033C151JAT2A |
| 06033C472JAT2A | AVX | 5 2 C1, C14 CAP., X7R, 4700pF, 25V, 5%, 0603 AVX, 06033C472JAT2A |
| 06033D105KAT2A | AVX | 7 3 C21, C22, C24 CAP., X5R, 1μF, 25V, 10%, 0603 AVX, 06033D105KAT2A |
| 06036D225KAT2A | AVX | 12 1 C33 CAP., X5R, 2.2μF, 6.3V, 10%, 0603 AVX, 06036D225KAT2A |
| 06036D475KAT2A | AVX | 11 1 C30 CAP., X5R, 4.7μF, 6.3V, 10%, 0603 AVX, 06036D475KAT2A |
| 08053C105KAT2A | AVX | 8 1 C23 CAP., X7R, 1μF, 25V, 10%, 0805 AVX, 08053C105KAT2A |
| 12106D107MAT2A | AVX | 3 6 COUT1–COUT3, COUT6–COUT8 CAP., X5R, 100μF, 6.3V, 20% 1210 AVX, 12106D107MAT2A |
| 24LC025-I/ST | Microchip | 37 1 U2 I.C., EEPROM SERIAL-I2C, 2K-bit, IC, TSSOP-8 MICROCHIP, 24LC025-I/ST |
| 87760-1416 | Molex | 21 1 J12 CONN HEADER 14POS 2MM R/A GOLD MOLEX, 87760-1416 |
| 4TPF470ML | Panasonic | 4 4 COUT9–COUT10, COUT11–COUT12 CAP., 470μF, 4V, POSCAP PANASONIC, 4TPF470ML |
| CRCW06030000Z0EA | Vishay | 25 9 R7, R9, R33, R63, R65, R66, R91, R92, R106 RES., CHIP, 0Ω 0603 VISHAY, CRCW06030000Z0EA |
| CRCW060310K0FKEA | Vishay | 26 14 R10–R16, R18, R19, R24, R52, R77, R94, R95 RES., CHIP, 10k, 1%, 0603 VISHAY, CRCW060310K0FKEA |
| CRCW060310R0FKEA | Vishay | 24 6 R3, R25, R32, R69, R70, R93 RES., CHIP, 10Ω, 1%, 0603 VISHAY, CRCW060310R0FKEA |
| CRCW060315K8FKEA | Vishay | 33 1 R78 RES., CHIP, 15.8k, 1%, 0603 VISHAY, CRCW060315K8FKEA |
| CRCW06031K65FKEA | Vishay | 28 1 R30 RES, CHIP, 1.65k, 1%, 0603 VISHAY, CRCW06031K65FKEA |
| CRCW060332K4FKEA | Vishay | 27 2 R28, R29 RES, CHIP, 32.4k, 1%, 0603 VISHAY, CRCW060332K4FKEA |
| CRCW06034K99FKEA | Vishay | 32 2 R72, R73 RES., CHIP, 4.99k, 1%, 0603 VISHAY, CRCW06034K99FKEA |
| CRCW06035K23FKEA | Vishay | 29 1 R31 RES, CHIP, 5.23k, 1%, 0603 VISHAY, CRCW06035K23FKEA |
| CRCW20100000Z0EF | Vishay | 30 1 R48 RES., CHIP 0Ω, 0.5W, 2010 VISHAY, CRCW20100000Z0EF |
| SUD50N04-8M8P-4GE3 | Vishay | 22 1 Q1 MOSFET N-CH 40V 14A TO-252 VISHAY, SUD50N04-8M8P-4GE3 |
| SI2365EDS-T1-GE3 | Vishay | 23 1 Q19 MOSFET P-CH 20V 5.9A TO-236 VISHAY, Si2365EDS-T1-GE3 |
| WSL20105L000FEA | Vishay | 34 1 R90 RES., CHIP, 0.005Ω, 1/2W, 1%, 2010 VISHAY, WSL20105L000FEA |
| WSL2010R0100FEA | Vishay | 31 1 R53 RES., CHIP, 0.01Ω, 1/2W, 1%, 2010 VISHAY, WSL2010R0100FEA |
| 2308-2-00-80-00-00-07-0 | Mill-Max | 13 27 E1–E27 TESTPOINT, TURRET, .062" MILL-MAX, 2308-2-00-80-00-00-07-0 |
| 2SN-BK-G | Samtec | 38 2 XJP1, XJP2 SHUNT SAMTEC, 2SN-BK-G |
| 06033C103JAT | AVX | 10 2 C27, C28 CAP., X7R, 10nF, 25V, 5%, 0603 AVX, 06033C103JAT |
| 0603YD104KAT | AVX | 9 1 C26 CAP., X5R, 100nF, 16V, 10%, 0603 AVX, 0603YD104KAT |
| 112404 | Amphenol Connex | 15 3 J2, J3, J4 CONN, BNC, 5PINS CONNEX, 112404 |
| LTM4678EY#PBF | Analog Devices | 1 1 U1 IC, LTM4678EY#PBF ANALOG DEVICES, LTM4678EY#PBF |
| 98414-G06-12ULF | FCI | 14 1 J1 CONN HEADER 12POS 2MM STR DL PCB FCI, 98414-G06-12ULF |
| GRM32ER6YA106KA12 | Murata | 2 4 CIN2, CIN3, CIN4, CIN5 CAP., X5R, 10μF, 35V, 10%, 1210 MURATA, GRM32ER6YA106KA12 |
| NPPN072FJFN-RC | Sullins Connector Solutions | 20 1 J11 CONN RECEPT 2MM DUAL R/A 14POS SULLINS, NPPN072FJFN-RC |
| NRPN031PAEN-RC | Sullins Connector Solutions | 35 2 SW1, SW0 HEADER, 3 PIN 0.079 SINGLE ROW SULLINS, NRPN031PAEN-RC |
| 35CE150AX | Sun Electronic | 1 1 CIN1 CAP., 150μF, 35V, ALUMINUM ELECTR., SUN ELECTRONIC IND, 35CE150AX |
| LTC3880 | Analog Devices | supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883 |
| LTC3882 | Analog Devices | supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883 |
| LTC3883 | Analog Devices | supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883 |
| LTM4675 | Analog Devices | supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883 |
| LTM4676 | Analog Devices | supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883 |
| LTM4677 | Analog Devices | supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883 |
| LTM4678EY#PBF | Analog Devices | 36 1 U1 IC, LTM4678EY#PBF ANALOG DEVICES, LTM4678EY#PBF |
| 25A | Maxim | 16V input range. Each output can supply 25A maximum |
| TO-236 | Vishay | 23 1 Q19 MOSFET P-CH 20V 5.9A TO-236 VISHAY, Si2365EDS-T1-GE3 |
| TO-252 | Vishay | 22 1 Q1 MOSFET N-CH 40V 14A TO-252 VISHAY, SUD50N04-8M8P-4GE3 |