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RT8811B

Richtek
Part Number RT8811B
Manufacturer Richtek
Description Dual-Phase COT Buck PWM Controller
Published Mar 25, 2019
Detailed Description ® RT8811B Dual-Phase COT Buck PWM Controller with Dynamic Voltage Control General Description The RT8811B is a 2/1 pha...
Datasheet PDF File RT8811B PDF File

RT8811B
RT8811B

Overview
® 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.
Using the method of current sampling utilizes the best advantages of each technique.
The RT8811B 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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