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EVAL-LT7171-AZ: LT7171 Dual-Phase 40A Silent Switcher Step-Down Regulator Evaluation Board

Evaluation board for the LT7171 step-down regulator, delivering 40A at 1.0V from a 2.9V-16V input. Features low EMI, PMBus telemetry, and LTpowerPlay software support.

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Overview

The EVAL-LT7171-AZ is a demonstration platform for the LT7171, a 16V PolyPhase Silent Switcher step-down regulator featuring digital power system management. This evaluation board uses two LT7171 ICs in a dual-phase configuration to supply up to 40A of continuous load current at a default output voltage of 1.0V. The Silent Switcher architecture minimizes EMI and reduces layout sensitivity, while the PMBus/I2C interface provides telemetry for voltage, current, temperature, and fault status. Users can reconfigure the device and program its NVM using the LTpowerPlay GUI software. The circuit operates with a 1MHz switching frequency and utilizes controlled on-time valley current-mode control for high transient response and small solution size.

Use Cases

  • High-current power supplies for FPGAs and ASICs
  • Telecommunications and networking infrastructure
  • Industrial power control systems
  • Evaluation of digital power management and telemetry
  • Low-EMI power distribution

Topics

LT7171
EVAL-LT7171-AZ
Silent Switcher
Step-Down Regulator
PMBus
Digital Power System Management
PolyPhase
DC/DC Converter
Analog Devices
LTpowerPlay

Referenced Parts

EEFGX0E471L

Panasonic

CAP., 470μF, ALUM. POLY., 2.5V, 20%, 3-TERM. 7343

EEHZK1E271P

Panasonic

CAP., 270μF, ALUM POLY HYB, 25V, 20%, 8x10.2mm

60800213421

Wurth Electronics

CONN., SHUNT, FEMALE, 2-POS, 2mm

LQFN-30

Analog Devices

24 2 U1, U2 IC, 20A, 16V REGULATOR, LQFN-30 ANALOG DEVICES, LT7171RV#TRPBF

112404

Amphenol RF

CONN., RF, BNC, RCPT

HSMG-C190

Broadcom Inc.

LED, GREEN, DIFFUSED, 0603

HSMH-H190

Broadcom Inc.

LED, RED, DIFFUSED, 0603

62000311121

Wurth Elektronik

CONN., HDR, MALE, 1x3, 2mm

10DFN

Analog Devices

19 1 U6 IC, 2.6A, 2.5V-5.5V IDEAL DIO, 10DFN ANALOG DEVICES, LTC4413EDD#PBF

TSSOP-8

Microchip

18 1 U5 IC, EEPROM, 2Kb (256x8), TSSOP-8 MICROCHIP, 24LC025-I/ST

8x10.2mm

Panasonic

20%, 8x10.2mm PANASONIC, EEH-ZK1E271P

SOT-23-3

Vishay

17 1 Q2 MOSFET, N-CH, 60V, 300mA, SOT-23-3 VISHAY, 2N7002K-T1-GE3

2mm

Wurth Elektronik

7 1 JP1 CONN., HDR, MALE, 1x3, 2mm WURTH ELEKTRONIK, 62000311121

2mm

Wurth Elektronik

10 1 XJP1 CONN., SHUNT, FEMALE, 2-POS, 2mm WURTH ELEKTRONIK, 60800213421

EVAL-LT7171-AZ: LT7171 Dual-Phase 40A Silent Switcher Step-Down Regulator Evaluation Board | Design Resources