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RT8877C - Dual-Output PWM Controller

General Description

The RT8877C is a 4 + 2 phases PWM controller.

Moreover, it is compliant with AMD SVI2 Voltage Regulator Specification to support both CPU core (VDD) and Northbridge portion of the CPU (VDDNB).

Key Features

  • CCRCOT (Constant Current Ripple Constant OnTime) with G-NAVP (Green-Native AVP), which is a Richtek's proprietary topology. G-NAVP makes it an easy setting controller to meet all AMD AVP (Active Voltage Positioning) VDD/VDDNB requirements. The droop is easily programmed by setting the DC gain of the error amplifier. With proper compensation, the load transient response can achieve optimized AVP performance. The controller also uses the interface to issue VOTF Complete and to send digitally encod.

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Datasheet Details

Part number RT8877C
Manufacturer Richtek
File Size 641.45 KB
Description Dual-Output PWM Controller
Datasheet download datasheet RT8877C Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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® RT8877C Dual-Output PWM Controller for AMD SVI2 CPU Power Supply General Description The RT8877C is a 4 + 2 phases PWM controller. Moreover, it is compliant with AMD SVI2 Voltage Regulator Specification to support both CPU core (VDD) and Northbridge portion of the CPU (VDDNB). The RT8877C features CCRCOT (Constant Current Ripple Constant OnTime) with G-NAVP (Green-Native AVP), which is a Richtek's proprietary topology. G-NAVP makes it an easy setting controller to meet all AMD AVP (Active Voltage Positioning) VDD/VDDNB requirements. The droop is easily programmed by setting the DC gain of the error amplifier. With proper compensation, the load transient response can achieve optimized AVP performance.