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RT8848B - Multi-Phase PWM Controller

This page provides the datasheet information for the RT8848B, a member of the RT8848A Multi-Phase PWM Controller family.

Datasheet Summary

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.

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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Datasheet preview – RT8848B

Datasheet Details

Part number RT8848B
Manufacturer Richtek
File Size 3.08 MB
Description Multi-Phase PWM Controller
Datasheet download datasheet RT8848B Datasheet
Additional preview pages of the RT8848B datasheet.

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Full PDF Text Transcription

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