IC manufacturers Texas Instruments

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Texas Instruments LM5141 | Demoboard PMP20818

137W Holdup Converter for Storage Server Reference Design

Overview

TopologyBuck Converter
Input voltage13-50 V
Output 111 V / 12.5 A
IC revisionA

Description

PMP20818 is a holdup reference design that uses the LM3481 non-synchronous boost and LM5141-Q1 synchronous buck controllers. When the 12V input supply is available, the buck converter is disabled, and the boost converter charges a capacitive holdup bank. In the event of a power outage, the boost converter is disabled, and the buck converter is enabled to holdup the 12V input rail for 15ms with a load of 12.5A.

Features

  • Boost followed by synchronous buck
  • Peak current-mode control
  • Buck turns on automatically at input power loss
  • No user control required
  • Low dropout buck maximizes holdup time

Typical applications

  • Medical Equipment
  • Embedded PC
  • Industrial Programmable Logic Controller / Industrial PC

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