LM5148 and LM25148 controller quickstart design tool




Welcome to the quickstart design tool for the LM5148, LM5148-Q1, LM25148 and LM25148-Q1. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator based on the above controller family. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.
  • Determine output filter inductance and input and output capacitances
  • Select components for input UVLO, OCP, output voltage setpoint and AEF
  • Optimize compensation values and pole/zero placement in terms of control loop stability using crossover frequency as a performance metric
  • Inspect regulator efficiency and component power dissipations
  • Analyze efficiency based on selected power MOSFET parameters
  • Review auto-generated schematic, BOM list and solution size estimate


Calculation tool

LM25148 Quickstart Calculator SNVR504.ZIP (4120KB)

Release date: 28-Jun-2021
Supported products & hardware

Supported products & hardware

Buck controllers (external switch)
LM25148 42-V synchronous buck DC/DC controller with ultra-low IQ LM25148-Q1 Automotive 42-V synchronous buck DC/DC controller with ultra-low IQ
Evaluation board
LM25149-Q1EVM-2100 LM25149-Q1 5.5-V to 36-V, low IQ, synchronous buck DC/DC controller evaluation module

Support & training

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