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RT8877C

Richtek
Part Number RT8877C
Manufacturer Richtek
Description Dual-Output PWM Controller
Published Nov 7, 2014
Detailed Description ® RT8877C Dual-Output PWM Controller for AMD SVI2 CPU Power Supply General Description The RT8877C is a 4 + 2 phases PW...
Datasheet PDF File RT8877C PDF File

RT8877C
RT8877C

Overview
® 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.
The controller also uses the interface to issue VOTF Complete and to send digitally encoded voltage and current values for the VDD and VDDNB domains.
It can operate in single phase and diode emulation mode and reach up to 90% efficiency in different modes according to different loading ...


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