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CPU/GPU Core Power Supply
CPU/GPU Core Power Supply
Notebook PC Memory Power Supply
Chipset/RAM Power Supply
Generic DC/DC Power Regulator
Dual-Phase PWM Controller
Dual-Phase PWM Controller
Two Embedded MOSFET Drivers and Embedded Switching Boot Diode
External Reference Input Control
PWM-VID Dynamic Voltage Control
Dynamic Phase Number Control
Lossless RDS(ON) Current Sensing for Current Balance
Internal Fixed and External Adjustable Soft-Start
Adjustable Current Limit Threshold
Adjustable Switching Frequency
UVP/OVP Protection
Shoot Through Protection and Short Pulse Free Technology
Support an Ultra-Low Output Voltage as Standby Voltage
Thermal Shutdown
Power Good Indicator
RoHS Compliant and Halogen Free
Dual-Phase PWM Controller with PWM-VID Reference
The RT8812A 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-20L 3x3 package.The ,RT8812A adopts RDS(ON) current sensing technique. Current limit is accomplished ,through continuous inductor-current-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 RT8812A features external reference input and PWM-VID dynamic output ,voltage control, in which the feedback voltage is regulated and tracks external ,input reference voltage. Other features include adjustable switching frequency, ,dynamic phase number control, internal/external soft-start, power good ,indicator, and enable functions.,,
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