LM5143-Q1 controller quickstart design tool
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Welcome to the LM5143-Q1 Quickstart Design Tool. This standalone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM5143-Q1 65-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.

  • Configure the controller for dual-output, two-phase or multi-phase configurations.
  • 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
  • Review auto-generated schematic and BOM list
  • Determine EMI filter components and spread spectrum modulating frequency

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LM5143-Q1 controller quickstart design tool

Technical documentation
Design files (1)
Title Type Size (KB) Date
ZIP 2085 18 Oct 2019

Hardware development (1)

Name Part Number Tool Type
Dual-channel automotive synchronous buck controller evaluation module  LM5143-Q1EVM-2100  Evaluation boards 

TI Devices (1)

Part Number Name Product Family
LM5143-Q1  3.5-V to 65-V low Iq, dual, 2-phase synchronous buck DC-DC controller  Step-down (buck) regulators 

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