LM5137-LM25137-DESIGN-CALC

LM5137/-Q1 and LM25137/-Q1 controller quickstart design tool

LM5137-LM25137-DESIGN-CALC

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Overview

Welcome to the quickstart design tool for the LM5137, LM5137-Q1, LM25137 and LM25137-Q1 controller family, which is intended for functional safety applications. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator in a single- or dual-output configuration. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.

Features

Configure the controller for dual-output, two-phase or multi-phase configurations
Determine buck inductances and input and output capacitances
Select components for soft start, overcurrent protection, switching frequency and output voltage setpoint(s)
Optimize compensation component values for loop stability using crossover frequency as a performance metric
Inspect regulator efficiency, solution size, and component power dissipations with ambient temperature as a parameter
Review auto-generated schematic and BOM list

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Calculation tool

LM5137-LM25137-DESIGN-CALC — LM5137/-Q1 and LM25137/-Q1 quickstart calculator

Supported products & hardware

Products

AC/DC & DC/DC controllers (external FET)

LM5137-Q1 — Automotive, 80V, 100% duty-cycle capable dual-channel synchronous buck controller

Hardware development

Evaluation board

LM25137F-Q1-EVM5D3 — LM25137F-Q1 evaluation module

LM5137F-Q1-EVM12V — LM5137F-Q1 evaluation module

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LM5137-LM25137-DESIGN-CALC — LM5137/-Q1 and LM25137/-Q1 quickstart calculator

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Latest version

Version: B1

Release date: Aug 19, 2024

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LM5137_LM25137_quickstart_calculator_B1.xlsm — 2422 K

LM5137/-Q1 and LM25137/-Q1 synchronous buck controller quickstart calculator

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Products

AC/DC & DC/DC controllers (external FET)

LM5137-Q1 — Automotive, 80V, 100% duty-cycle capable dual-channel synchronous buck controller

Hardware development

Evaluation board

LM25137F-Q1-EVM5D3 — LM25137F-Q1 evaluation module

LM5137F-Q1-EVM12V — LM5137F-Q1 evaluation module

Release Information

Welcome to the quickstart design tool for the LM5137, LM5137-Q1, LM25137 and LM25137-Q1 controller family, which is intended for functional safety applications. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator using this controller family. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.

Technical documentation

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	Type	Title		Date
	EVM User's guide	LM5137F-Q1 12V, 20A Single-Output Evaluation Module	PDF \| HTML	Feb 19, 2025

LM5137-LM25137-DESIGN-CALC

LM5137/-Q1 and LM25137/-Q1 controller quickstart design tool