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RT8881A - Multi-Phase PWM Controller

Description

The RT8881A is a multi-phases PWM controller.

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

The RT8881A adopts the G-NAVPTM (Green-Native AVP), which is a Richtek's proprietary topology.

Features

  • programmable power states with different sets of operating phase number, over clocking offset, switching frequency, load-line and protection setting. The platform master can optimize the performance and efficiency of the power according to different working scenarios via the I2C interface. The RT8881A also provides power good indication, over-current indication and dual OCP mechanism for AMD SVI2 CPU core and NB. It also features complete fault protection functions including overvoltage, under-v.

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Datasheet preview – RT8881A

Datasheet Details

Part number RT8881A
Manufacturer Richtek
File Size 630.83 KB
Description Multi-Phase PWM Controller
Datasheet download datasheet RT8881A Datasheet
Additional preview pages of the RT8881A datasheet.

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Full PDF Text Transcription

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® RT8881A Dual-Channel, Multi-Phase PWM Controller with I2C Interface for AMD SVI2 CPU Power Supply General Description The RT8881A is a multi-phases PWM controller. Moreover, it is compliant with AMD SVI2 Voltage Regulator Specification to support both CPU core (VDD) and Northbridge portion (VDDNB) of the CPU. The RT8881A adopts the G-NAVPTM (Green-Native AVP), which is a Richtek's proprietary topology. The G-NAVP makes it an easy setting controller to meet all AMD AVP (Adaptive Voltage Positioning) 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.
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