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RT8845B Datasheet Multi-Phase PWM Controller

Manufacturer: Richtek

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Datasheet Details

Part number RT8845B
Manufacturer Richtek
File Size 488.05 KB
Description Multi-Phase PWM Controller
Datasheet download datasheet RT8845B Datasheet

General Description

The RT8845B is a 4/3/2/1 phase synchronous Buck PWM controller which is optimized for high performance graphic microprocessor and computer applications.

The RT8845B adopts G-NAVPTM (Green Native AVP) which is Richtek's proprietary topology derived from finite DC gain of EA amplifier with current mode control.

By utilizing the GNAVPTM topology, the operating frequency of the RT8845B varies with VID, load and input voltage to further enhance the efficiency even in CCM.

Overview

® RT8845B Multi-Phase PWM Controller with PWM-VID Reference General.

Key Features

  • external reference input and PWMVID dynamic output voltage control, in which the feedback voltage is regulated and tracks external input reference voltage. Other features include adjustable switching frequency, dynamic phase number control, internal/external soft- start, power good indicator, and enable functions. Features.
  • Multi-Phase PWM Controller.
  • Power State Indicator  1P-CCM/4P-CCM/1P-DEM.
  • Support 1.8V PWM-VID Interface.
  • External Reference Input Control.
  • PWM-VID.

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