The HIP6021A provides the power control and protection for four output voltages in high-performance, graphics intensive microprocessor and computer applications. The IC integrates a voltage-mode PWM controller and three linear controllers, as well as the monitoring and protection functions into a 28 lead SOIC package.

特性 Features

? Provides 4 Regulated Voltages

- Microprocessor Core, AGP Bus, Memory, and GTL Bus Power

? Drives N-Channel MOSFETs

? Linear Regulator Drives Compatible with both MOSFET and Bipolar Series Pass Transistors

? Fixed or Externally Resistor-Adjustable Linear Outputs

? Simple Single-Loop Control Design

- Voltage-Mode PWM Control

? Fast PWM Converter Transient Response

- High-Bandwidth Error Amplifier

- Full 0 to 100 Duty Ratio

? Excellent Output Voltage Regulation

- Core PWM Output: ±1 Over Temperature

- Other Outputs: ±3 Over Temperature

? TTL-Compatible 5-Bit DAC Core Output Voltage Selection

- Shutdown Feature Removed When All Inputs High

- Wide Range 1.3VDC to 3.5VDC

? Power-Good Output Voltage Monitor

? Over-Voltage and Over-Current Fault Monitors

- Switching Regulator Does Not Require Extra Current Sensing Element, Uses Upper MOSFET’s rDS(ON)

? Small Converter Size

- Constant Frequency Operation

- 200kHz Free-Running Oscillator; Programmable From 50kHz to Over 1MHz

- Small External Component Count

Applications

? Motherboard Power Regulation for Computers