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RT8857A - 4/3/2/1-Phase PWM Controller

This page provides the datasheet information for the RT8857A, a member of the RT8857 4/3/2/1-Phase PWM Controller family.

Description

The RT8857/A is a 4/3/2/1-phase synchronous buck controller with 2 integrated MOSFET drivers for Intel VR11.1/VR10.x and AMD K8/K8_M2 CPUs power application.

RT8857/A uses differential inductor DCR current sense to achieve phase current balance and active voltage positioning.

Features

  • include adjustable operating frequency, adjustable soft start, power good indication, external error-amp compensation, over voltage protection, over current protection, VRHOT sensing and IMON for various.

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Datasheet preview – RT8857A

Datasheet Details

Part number RT8857A
Manufacturer Richtek
File Size 392.79 KB
Description 4/3/2/1-Phase PWM Controller
Datasheet download datasheet RT8857A Datasheet
Additional preview pages of the RT8857A datasheet.

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Full PDF Text Transcription

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RT8857/A 4/3/2/1-Phase PWM Controller with Embedded Drivers for CPU Core Power Supply General Description The RT8857/A is a 4/3/2/1-phase synchronous buck controller with 2 integrated MOSFET drivers for Intel VR11.1/VR10.x and AMD K8/K8_M2 CPUs power application. RT8857/A uses differential inductor DCR current sense to achieve phase current balance and active voltage positioning. Other features include adjustable operating frequency, adjustable soft start, power good indication, external error-amp compensation, over voltage protection, over current protection, VRHOT sensing and IMON for various applications.
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