描述 Description

The uP9646B is a driver integrated 30V power stage module for multi-phase synchronousbuck DC-DC converter in desktop and notebook applications. The device is operatedwith 5V input for integrated MOSFET driver, and its MOSFETs are fully optimized todeliver up to 50A output current with high conversion efficiency for CPU, GPU andDDR memory power supplies. This part features Intel? PS4 mode support,thermal warning, over current protection, and zero current detection functions. Thethermal warning output is used by system to secure safety operation. Theover current protection function of the device further enhances protection for theconverter. The zero current detection function provides more application flexibility.The uP9646B also provides comprehensive protection functions, including under voltagelockout for VCC/VDRV, and over temperature protection. The uP9646B is available witha compact WQFN 5x5-31L package.

特性 Features

? Capable of Delivering Continuous Current up to 50A, Peak Current Up to 120A(10us) and 80A (10ms)
? Switching Frequency up to 2MHz
? Support Intel? PS4 Low Power Mode
? Input Voltage VIN Range: 2.5V to 25V
? VCC and VDRV Supply Input Range: 4.5V to 5.5V
? Compatible with 3.3V / 5V PWM Logic with Tri-State Input
? Support PWM Resistor Strap Setting Application
? Integrated 5V MOSFET Driver and 30V MOSFETs
? VCC / VDRV Under Voltage Lockout (UVLO)
? Over Current Protection
? Thermal Warning Function
? Over Temperature Protection
? Zero Current Detection (ZCDEN#) Control for Diode Emulation / CCM Operation
? Low Profile WQFN5x5-31L Package
? RoHS Compliant and Halogen Free

應(yīng)用 Application

? Desktop Computers
? Notebook Computers
? Graphic Cards
? High Frequency, Low Profile Buck DC-DC Converters
? Voltage Regulator for CPUs and DDR Memory Arrays