RT8172AGQW Datasheet | Richtek

® RT8172A Dual Single-Phase PWM Controller for CPU and GPU Core Power Supply General Description The RT8172A is a dual single-phase PWM controller with integrated MOSFET drivers, pliant with Intel IMVP7 Pulse Width Modulation Specification to support both CPU core and GPU core power. This part adopts G-NAVPTM (Green-Native AVP), which is Richtek's proprietary topology derived from finite DC gain pensator in constant ontime control mode. The G-NAVPTM makes this part an easy setting PWM controller to meet all Intel AVP (Active Voltage Positioning) mobile CPU/GPU requirements. The RT8172A uses SVID interface to control an 8-bit DAC for output voltage programming. The built-in high accuracy DAC converts the received VID code into a voltage value ranging from 0V to 1.52V with 5m V step voltage. The system accuracy of the controller can reach 0.8%. The RT8172A operates in continuous conduction mode or diode emulation mode, according to the SVID mand. The maximum efficiency can reach up to 90% in different operating modes according to different load conditions. The droop function (load line) can be easily programmed by setting the DC gain of the error amplifier. With proper pensation, the load transient response can achieve optimized AVP performance. The output voltage transition slew rate is set via the SVID interface. The RT8172A supports both DCR and sense resistor current sensing. The RT8172A provides VR_READY and thermal throttling output signals for IMVP7 CPU and GPU core. This part also Features plete fault protection functions including over-voltage, under-voltage, negative-voltage, over-current and thermal shutdown. The RT8172A is available in the WQFN-40L 5x5 small footprint package. Features - Dual Single-Phase PWM Controller for CPU Core and GPU Core Power - IMVP7 patible Power Management States - Serial VID Interface - G-NAVPTM Topology - AVP for CPU VR Only - 0.5% DAC Accuracy - 0.8% System Accuracy - Differential Remote Voltage Sensing -...