General Description

The APW7045 integrates PWM controller and linear controller, as well as the monitoring and protection functions into a single package, which provides two controlled power outputs with over-voltage and overcurrent protections. The PWM controller regulates the DDR termination voltage (1.25V) or GPU Voltage (2.05V) with a synchronous-rectified buck converter.

特性 Features

? 2 Regulated Voltage are provided

?Switching Power for Fixed Voltage (1.0V)

?Linear Regulator for VMEM(2.5V)

? Simple Single-Loop Control Design

?Voltage-Mode PWM Control

? Excellent Output Voltage Regulation

?PWM Output: ±1

?Linear Output: ±3

? Fast Transient Response

?High-Bandwidth Error Amplifier

?Full 0 to 100 Duty Ratio

? Power-Good Output Voltage Monitor

? Over-Voltage and Over-Current Fault Monitors

? Small Converter Size

?200KHz Free-Running Oscillator ; Progammable from 50KHz to 800KHz

?Reduce External Component Count

Applications

? Motherboard Power Regulation for Computers

? Low-Voltage Distributed Power Supplies

? VGA Card Power Regulation

? DDR SDRAM Power Regulation