General Description

The APW7026 Provides the power control and protection for three output voltages in VGA Card applications. It integrates two PWM controllers, one linear controller as well as the monitoring and protection functions into a single package.

Features

• 3 Regulated Voltage are provided

• SYNC Switching Power for VTT(1.25V)

• ASYNC Switching Power for NVVDD(2.05V)

• Linear Regulator for FBVDDQ(2.5V)

• Simple Single-Loop Control Design

• Voltage-Mode PWM Control

• Excellent Output Voltage Regulation

• VTT Output: ±1 Over Temperature

• NVVDD Output: ±2 Over Temperature

• FBVDDQ Output: ±2.5 Over Temperature

• Fast Transient Response

• On-Chip Feedback Compensation

• 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 800KHz

• Reduce External Component Count

Applications

• VGA Card Power Regulation