Datasheet4U Logo Datasheet4U.com

RT8870A - Dual-Output PWM Controller

General Description

The RT8870A is a dual-output PWM controller for AMD SVI mobile CPU power supply.

The RT8870A provides a two-phase PWM controller to power the CPU Core (VDD) and a single-phase PWM controller to power the Northbridge portion of the CPU (VDDNB).

Key Features

  • CCRCOT (Constant Current Ripple Constant On-Time) control with G-NAVPTM (Green-Native AVP), which is a Richtek proprietary topology. The CCRCOT control provides superior output voltage ripple performance over the entire input/output range. G-NAVPTM makes this device an easy setting controller to meet the droop requirement for all AMD mobile CPUs. The droop is easily programmed by setting the DC gain of the error amplifier. With proper compensation, the load transient response can achieve optimiz.

📥 Download Datasheet

Datasheet Details

Part number RT8870A
Manufacturer Richtek
File Size 293.08 KB
Description Dual-Output PWM Controller
Datasheet download datasheet RT8870A Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
RT88 AUTOMOTIVE BRIDGE RECTIFIERS LRC
RT8800 General Purpose 2/3-Phase PWM Controller Richtek Technology
RT8800A General Purpose 3-Phase PWM Controller Richtek Technology
RT8800B General Purpose 2/3-Phase PWM Controller Richtek Technology
RT8801 Multi-Phase PWM Controller Richtek Technology

Other Datasheets by Richtek

Part Number Description
RT8871A 4/3/2-Phase PWM Controller
RT8871B 4/3/2-Phase PWM Controller
RT8876A Dual Channel PWM Controller
RT8876B Dual Channel PWM Controller
RT8877C Dual-Output PWM Controller

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.

View original datasheet text
Preliminary RT8870A Dual-Output PWM Controller for AMD SVI Mobile CPU Power Supply General Description The RT8870A is a dual-output PWM controller for AMD SVI mobile CPU power supply. The RT8870A provides a two-phase PWM controller to power the CPU Core (VDD) and a single-phase PWM controller to power the Northbridge portion of the CPU (VDDNB). This part has three integrated MOSFET drivers and is fully compliant with AMD Voltage Regulator Specification to meet AMD’s mobile CPU power supply requirements. The RT8870A features CCRCOT (Constant Current Ripple Constant On-Time) control with G-NAVPTM (Green-Native AVP), which is a Richtek proprietary topology. The CCRCOT control provides superior output voltage ripple performance over the entire input/output range.