LM27403EVM

LM27403 High Efficiency 12V to 1.2V/25A Buck Eval Kit With Temp Compensated DCR Current Sensing

LM27403EVM

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Overview

The LM27403 EVM is a 300-kHz, high efficiency, synchronous buck converter with voltage-mode control and inductor DCR current sensing for overcurrent protection. An inexpensive 2N3904 BJT is used to sense temperature at the inductor. This enables correction for the inductor DCR’s variation over temperature as well as provide a thermal shutdown function based on a desired temperature setpoint.
  • 25A output current
  • 3V to 20V input voltage range
  • Switching frequency 250kHz
  • High efficiency, 91%, 1.2V 25A
  • DCR current sensing with temperature compensation
Buck controllers (external switch)
LM27403 3-20V, Voltage Mode Synchronous Buck Controller with Temperature-Compensated DCR Current Sensing
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Evaluation board

LM27403EVM – LM27403 High Efficiency 12V to 1.2V/25A Buck Eval Kit With Temp Compensated DCR Current Sensing

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

Technical documentation

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Type Title Date
More literature LM27403EVM EU Declaration of Conformity (DoC) Jan. 02, 2019
Datasheet LM27403 Synchronous Buck Controller With Temperature-Compensated, Inductor-DCR-Based Overcurrent Protection and Programmable Thermal Shutdown datasheet (Rev. B) Sep. 12, 2014
User guide LM27403 Evaluation Module User's Guide (Rev. A) Oct. 17, 2013
User guide LM27403EVM-POL600 30A Ultra-Compact DC/DC Regulator Evaluation Module Oct. 16, 2013

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