General Description

The APW7035 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 reference voltage (1.25V) or GPU Voltage (2.05V) with a synchronous-rectified buck converter. The linear controller regulates power for Memory Voltage.

Features

• 2 Regulated Voltage are provided

− Switching Power for Fixed Voltage (1.25V / 2.05V) or Adjustable Voltage

− Linear Regulator for FBVDDQ(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

− Constant Frequency Operation(200kHz)

− Reduce External Component Count

Applications

• Motherboard Power Regulation for Computers

• Low-Voltage Distributed Power Supplies

• VGA Card Power Regulation

• Termination Voltage