LM25141-Q1 controller quickstart design tool




Welcome to the LM25141-Q1 quickstart calculator design tool. This standalone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM25141-Q1 42-V synchronous buck DC/DC controller with low IQ. As such, the user can expeditiously arrive at an optimized design to meet the application requirements
  • Determine buck inductance and input and output capacitances
  • Select components for soft-start, hiccup-mode restart, OCP, switching frequency and output voltage setpoint(s)
  • Optimize compensation values and pole/zero placement in terms of control 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
  • Determine EMI filter components and spread spectrum modulating frequency
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Calculation tool

LM25141-Q1 Quickstart Design Calculator Tool (Rev. A) SNVC236A.ZIP (1689KB)

Supported products & hardware

Supported products & hardware

Buck controllers (external switch)
LM25141 Low Iq, Wide Input Range Synchronous Buck Controller LM25141-Q1 Automotive 2.2-MHz, low-IQ synchronous buck controller with frequency spread spectrum
Evaluation board
LM5141QRGEVM LM5141QRG Synchronous Buck Converter Evaluation Module

Technical documentation

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Type Title Date
EVM User's guide LM5141-Q1 EVM User’s Guide (Rev. A) 10 Jan 2018

Related design resources

Reference designs

PMP21107 Wide input synchronous buck converter reference design with frequency spread spectrum PMP30249 Automotive Synchronous Buck Reference Design

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