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LTC3871 Datasheet Bidirectional PolyPhase Synchronous Buck or Boost Controller

Manufacturer: Analog Devices

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General Description

The LTC®3871/LTC3871-1 is a high performance bidirectional buck or boost switching regulator controller that operates in either buck or boost mode on demand.

It regulates in buck mode from VHIGH-to-VLOW and boost mode from VLOW-to-VHIGH depending on a control signal, making it ideal for 48V/12V automotive dual battery systems.

An accurate current programming loop regulates the maximum current that can be delivered in either direction.

Overview

LTC3871/LTC3871-1 Bidirectional PolyPhase Synchronous Buck or Boost.

Key Features

  • nn Unique Architecture Allows Dynamic Regulation of Input Voltage, Output Voltage or Current nn VHIGH Voltages Up to 100V nn VLOW Voltages Up to 30V nn Synchronous Rectification: Up to 97% Efficiency nn ADI-Proprietary Advanced Current Mode Control nn ±1% Voltage Regulation Accuracy Over Temperature nn Accurate, Programmable Output Current Monitoring and Regulation for Both Buck and Boost Operation nn Selectable Buck and Boost Current Sense Limits nn Programmable DRVCC/EXTVCC Optimizes Efficienc.

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