
Anpec Electronics
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.
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