General Description

The APW7025 integrates a PWM controller and Dual linear controller, as well as the monitoring and protection functions into a single package , which provides three controlled power outputs with over-voltage and over-current protections. The PWM controller regulates the DDR reference voltage with a synchronous-rectified buck converter. The linear controller regulates power for microprocessor core voltage and Memory Voltage.

Features

• 3 Regulated Voltage are provided

• Switching Power for VTT(1.25V)

• Linear1 Regulator for FBVDDQ(2.5V)

• Linear2 Regulator for NVVDD(2.05V)

• 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

• Constant Frequency Operation(200kHz)

• Programmable Oscillator from 50kHz to 1MHz

• Reduce External Component Count

Applications

• Motherboard Power Regulation for Computers

• Low-Voltage Distributed Power Supplies

• VGA Card Power Regulation