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RT8811B - Dual-Phase COT Buck PWM Controller

General Description

The RT8811B is a 2/1 phase synchronous Buck PWM controller which is optimized for high performance graphic microprocessor and computer applications.

Key Features

  • external reference input and PWMVID dynamic output voltage control, in which the feedback voltage is regulated and tracks external input.

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Datasheet Details

Part number RT8811B
Manufacturer Richtek
File Size 360.17 KB
Description Dual-Phase COT Buck PWM Controller
Datasheet download datasheet RT8811B 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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® RT8811B Dual-Phase COT Buck PWM Controller with Dynamic Voltage Control General Description The RT8811B is a 2/1 phase synchronous Buck PWM controller which is optimized for high performance graphic microprocessor and computer applications. The IC integrates a Constant-On-Time (COT) PWM controller, two MOSFET drivers with internal bootstrap diodes, as well as channel current balance and protection functions including Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), current limit, and thermal shutdown into the WQFN-24L 4x4 package. The RT8811B adopts RDS(ON) current sensing technique. Current limit is accomplished through continuous inductorcurrent-sense, while RDS(ON) current sensing is used for accurate channel current balance.