IC manufacturers Texas Instruments

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Texas Instruments LM5018MRX/NOPB | Demoboard PMP21943

48-V / 25-A negative-to-positive synchronous buck-boost reference design for power amplifiers

Overview

TopologyBoost Converter
Input voltage-48 V
Output 148 V / 25 A
IC revisionA

Description

This reference design is a negative- to-positive synchronous buck-boost converter for power amplifier applications. The circuit is powered from the nominal -48 V system source to provide an output voltage of +48 V at 25 A. The design uses two dual synchronous boost controllers for 4-phase operation at a switching frequency of 150 kHz. Output voltage adjustment to +30 V is jumper selectable. 1 through 4 phase operation is also jumper selectable.

Features

  • Non-isolated inverting solution for higher power
  • Excellent phase current sharing for balanced thermal performance
  • Jumper selectable phase control
  • Compact design for minimum solution size
  • Jumper selectable output voltage control

Typical applications

  • Active antenna system mMIMO (AAS)

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