RT8848A Datasheet Multi-Phase PWM Controller

Manufacturer: Richtek

RT8848A multi-phase pwm controller by Richtek - Datasheet Preview

Datasheet Details

Part number	RT8848A
Manufacturer	Richtek
File Size	3.08 MB
Description	Multi-Phase PWM Controller
Download	RT8848A Download (PDF)

General Description

The RT8848A/B is a 8/7/6/5/4/3/2/1 multi-phase synchronous Buck controller which is optimized for high performance graphic microprocessor and support nVidia OVR4i+ spec with PWM-VID interface.

The RT8848A/B adopts AC G-NAVPTM (Green Native AVP) which is Richtek's proprietary topology derived from finite DC gain of internal GM amplifier with current mode control.

By utilizing the AC G-NAVPTM topology, the operating frequency of the RT8848A/B varies with VID, load and input voltage to further enhance the efficiency even in CCM.

Overview

RT8848A/B Multi-Phase PWM Controller with PWM-VID Reference General.

Key Features

external reference input and PWM-VID dynamic output voltage control, in which the output voltage is regulated and tracks external input reference voltage. The RT8848A/B can set internal RAMP amplitude through PINSETx pin and this can optimize stability and load transient performance. The RT8848A/B also provides complete fault protection functions including over-voltage protection (OVP), under-voltage protection (UVP), channel over-current limit (CH_OC), sum output current protection (SOC) and ov.

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