LM5146-Q1-EVM12V

Synchronous buck controller evaluation module

LM5146-Q1-EVM12V

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Overview

The LM5146-Q1-EVM12V high density evaluation module (EVM) is designed to showcase the performance of the LM5146-Q1 high performance, synchronous buck DC-DC buck controller with wide input voltage range. The design is packaged in a miniature footprint with low component count. It operates over a wide input voltage range of 15 V to 85 V to deliver a fixed 12-V output with better than 1% setpoint accuracy and currents up to 8A. By virtue of the LM5146-Q1's minimum on-time of 40ns, operation at very low duty cycle is feasible. The LM5146-Q1 offers a full suite of protection features to ensure protection of the regulator during fault conditions. These include undervoltage lockout to ensure proper operation duing voltage-sag conditions, programmable soft-start to reduce inrsuh current, hiccup-mode overcurrent protection and thermal shutdown. Precision enable, open-drain PGOOD indicator and SYNC IN /  SYNC OUT features are also provided.




Features
  • 15-V to 85-V input voltage range
  • 12-V output voltage with 1% setpoint accuracy
  • Rated for up to 8 A of load current
  • 400-kHz switching frequency
  • Resistor divider to EN/UVLO to faciltate programmable input voltage UVLO
  • Fully assembled, tested and proven PCB layout with small footprint
Buck controllers (external switch)
LM5146-Q1 Automotive 100-V synchronous buck DC/DC controller with wide duty-cycle range

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Evaluation board

LM5146-Q1-EVM12V – Synchronous buck controller evaluation module

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

Design files

LM5146-Q1-EVM12V PCB Layout Files SNVR473.ZIP (7838 KB)

Technical documentation

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Type Title Date
* User guide LM5146-Q1EVM User's Guide Aug. 10, 2018
More literature LM5146-Q1-EVM12V EU Declaration of Conformity (DoC) Jan. 02, 2019
Data sheet LM5146-Q1 100-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range datasheet (Rev. A) Nov. 15, 2018

Related design resources

Hardware development

EVALUATION BOARD
LM5145EVM-HD-20A LM5145 Wide VIN Synchronous Buck Controller High Density Evaluation Module

Design tools & simulation

CALCULATION TOOL
LM5146DESIGN-CALC LM5146-Q1 synchronous buck controller quickstart design tool

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