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LM5171EVM-BIDIR

LM5171 evaluation module

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LM5171EVM-BIDIR

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Overview

The LM5171EVM-BIDIR evaluation module (EVM) is a dual-phase interleaved bidirectional converter ideal for 48V to 12V dual battery system applications. It is multiphase stackable with adjustable interleaving angle and balanced current sharing. The EVM also includes various jumpers to configure the circuit for many different use cases. This includes the capability of being controlled by a microcontroller or a high-power unidirectional buck or boost converter.

Features
  • 12V port voltage regulated at 14.5V with 48V port voltage range of 6V to 70V in buck mode
  • 48V port voltage regulated at 50.5V with 12V port voltage range of 6V to 48V in boost mode
  • DC current (max) into or out of the 12V port is 60A
  • Built-in analog voltage loop control, with option of a microcontroller digital-voltage loop-control through interface connectors
  • Daisy-chain multiphase interleaved three, four, six and eight phase operation to support higher power
AC/DC & DC/DC controllers (external FET)
LM5171 — 80-V dual-channel bidirectional buck-boost controller LM5171-Q1 — Automotive, 80-V dual-channel bidirectional buck-boost controller
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Evaluation board

LM5171EVM-BIDIR — LM5171 evaluation module

Calculation tool

LM5171-CALC — LM5171-Q1 Quickstart Calculator

Supported products & hardware
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LM5171-CALC — LM5171-Q1 Quickstart Calculator

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Latest version
Version: 1.0.2
Release date: 10 Mar 2025
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download LM5171_Buck_or_Boost_Quickstart_Tool_1.0.2.xlsx  — 1257 K

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Products
AC/DC & DC/DC controllers (external FET)
LM5171 — 80-V dual-channel bidirectional buck-boost controller LM5171-Q1 — Automotive, 80-V dual-channel bidirectional buck-boost controller
Hardware development
Evaluation board
LM5171EVM-BIDIR — LM5171 evaluation module

Release Infomation

Design calculator for LM5171

What's new

  • I2C address change 0x20~0x27
  • Add warning to VIPK if above 3V
  • IPK and VSET resistor divider input voltage set to VREF (3.5V)
  • Peak current limit: suggested >20% in comment.
Design tool

LM5171EVM-BIDIR-LAYOUT — LM5171EVM-BIDIR PCB layout

Supported products & hardware
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LM5171EVM-BIDIR-LAYOUT — LM5171EVM-BIDIR PCB layout

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Latest version
Version: 1.0
Release date: 14 Aug 2024
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download LM5171EVM-BIDIR-LAYOUT.zip  — 5833 K

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Hardware development
Evaluation board
LM5171EVM-BIDIR — LM5171 evaluation module

Release Infomation

LM5171EVM-BIDIR PCB LAYOUT

What's new

  • Initial release
TI's Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

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Type Title Date
EVM User's guide LM5171 Evaluation Module User's Guide (Rev. A) PDF | HTML 13 Nov 2023
Certificate LM5171EVM-BIDIR EU Declaration of Conformity (DoC) 05 May 2023

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