描述 Description

The uP9642B is a Smart Power Stage (SPS) solution withfully optimized, integrated driver and MOSFETs for highcurrent,high frequency, synchronous buck DC-DCconverters. The SPS enables higher performance at loweroutput voltages required by cutting edge CPU, GPU andDDR memory designs.

The uP9642B also enables advanced high accuracy moduletemperature reporting and on-chip synchronous MOSFETcurrent monitoring. The protection includes cycle-by-cycleover current protection, phase fault detection, preliminaryover voltage protection, VCC/VDRV UVLO protection, andthermal shutdown.

The uP9642B is optimized for CPU core power delivery.This device combined with a multi-phase buck PWMcontroller forms a complete core voltage regulator foradvanced micro- processors.

特性 Features

? Input Voltage (VIN) Range: 4.5V to 16V
? VCC and VDRV Supply Range: 4.5V to 5.5V
? Output Voltage Range: 0.4V to 2.0V
? Up to 60A of Current Handling Capability
? Switching Frequency Range: 200kHz to 700kHz
? 5mV / A On-Chip MOSFET Current Sensing
? 8mV / °C Temperature Analog Output
? On-Chip MOSFET Temperature Compensation
? VCC / VDRV Under Voltage Lockout (UVLO)
? Thermal Shutdown and Fault Flag
? MOSFET Phase Fault Detection and Flag
? Cycle-by-Cycle Over Current Protection
? Preliminary Over Voltage (OV) Protection and Flag
? Support 3.3V and 5V Tri-State PWM Input
? Deep-Sleep Mode for Power Saving
? VOS Output Voltage Sensing Input
? Lead Free and RoHS Compliant Package

應(yīng)用 Application

? High Frequency, Low Profile DC-DC Converter
? Voltage Regulator for CPUs, GPUs and DDR Memory Arrays