Datasheet4U Logo Datasheet4U.com

RT8857 - 4/3/2/1-Phase PWM Controller

General Description

The RT8857/A is a 4/3/2/1-phase synchronous buck controller with 2 integrated MOSFET drivers for Intel VR11.1/VR10.x and AMD K8/K8_M2 CPUs power application.

RT8857/A uses differential inductor DCR current sense to achieve phase current balance and active voltage positioning.

Key Features

  • include adjustable operating frequency, adjustable soft start, power good indication, external error-amp compensation, over voltage protection, over current protection, VRHOT sensing and IMON for various.

📥 Download Datasheet

Datasheet Details

Part number RT8857
Manufacturer Richtek
File Size 392.79 KB
Description 4/3/2/1-Phase PWM Controller
Datasheet download datasheet RT8857 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
RT8857A 4/3/2/1-Phase PWM Controller
RT8855 4/3/2/1-Phase PWM Controller
RT8856 Multi-Phase PWM Controller
RT8859M Multi-Phase PWM Controller
RT8811B Dual-Phase COT Buck 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
RT8857/A 4/3/2/1-Phase PWM Controller with Embedded Drivers for CPU Core Power Supply General Description The RT8857/A is a 4/3/2/1-phase synchronous buck controller with 2 integrated MOSFET drivers for Intel VR11.1/VR10.x and AMD K8/K8_M2 CPUs power application. RT8857/A uses differential inductor DCR current sense to achieve phase current balance and active voltage positioning. Other features include adjustable operating frequency, adjustable soft start, power good indication, external error-amp compensation, over voltage protection, over current protection, VRHOT sensing and IMON for various applications.