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RT8885A - Dual Output 3-Phase + 2-Phase PWM Controller

Datasheet Summary

Description

The RT8885A is a dual output 3-phase + 2-phase PWM controller with 3 integrated MOSFET gate drivers and a single SVID interface for CPU and GPU core power supply.

This part complies with Intel VR12/IMVP7 Pulse Width Modulation Specification.

Features

  • Dual Output : 3-Phase (CORE) + 2-Phase (GFX).
  • Integrated MOSFET Drivers : 2 (CORE) + 1 (GFX).
  • VR12/IMVP7 PWM Specification Compliant.
  • Serial VID Interface.
  • G-NAVPTM Topology.
  • Fast Line/Load Transient Response.
  • Quick Response for Load Transient.
  • 0.5% DAC Accuracy.
  • 0.8% System Accuracy.
  • Accurate Current Balance.
  • Selectable Droop Function.
  • Selectable Forced DEM Operation.
  • Built-in ADC for Platform Programming.
  • Power Good Indicat.

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Datasheet preview – RT8885A

Datasheet Details

Part number RT8885A
Manufacturer Richtek
File Size 734.45 KB
Description Dual Output 3-Phase + 2-Phase PWM Controller
Datasheet download datasheet RT8885A Datasheet
Additional preview pages of the RT8885A datasheet.

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Full PDF Text Transcription

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® RT8885A Dual Output 3-Phase + 2-Phase PWM Controller For CPU and GPU Core Power Supply General Description The RT8885A is a dual output 3-phase + 2-phase PWM controller with 3 integrated MOSFET gate drivers and a single SVID interface for CPU and GPU core power supply. This part complies with Intel VR12/IMVP7 Pulse Width Modulation Specification. The RT8885A adopts G-NAVPTM (Green-Native AVP), which is a Richtek proprietary topology derived from finite DC gain compensator in constant ontime control mode. G-NAVPTM makes this part an easysetting PWM controller to meet all Intel mobile CPU/GPU AVP (Active Voltage Positioning) requirements. The RT8885A uses SVID interface to control an internal 8-bit DAC for output voltage programming.
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