The HIP6017B provides the power control and protection for three output voltages in high-performance microprocessor and computer applications. The IC integrates a PWM controller, a linear regulator and a linear controller as well as the monitoring and protection functions into a single 28 lead SOIC package. The PWM controller regulates the microprocessor core voltage with a synchronous-rectified buck converter. The linear controller regulates power for the GTL bus and the linear regulator provides power for the clock driver circuits.

特性 Features

? Provides 3 Regulated Voltages

- Microprocessor Core, Clock and GTL Power

? Linear Controller Drives Either N-Channel MOSFETs or Bipolar Transistors

? Operates from +3.3V, +5V and +12V Inputs

? Simple Single-Loop PWM Control Design

- Voltage-Mode Control

? Fast Transient Response

- High-Bandwidth Error Amplifier

- Full 0 to 100 Duty Ratios

? Excellent Output Voltage Regulation

- Core PWM Output: ±1 Over Temperature

- Other Outputs: ±2.5 Over Temperature

? TTL-Compatible 5-Bit Digital-to-Analog Core Output Voltage Selection

- Wide Range - 1.3VDC to 3.5VDC

- 0.1V Steps from 2.1VDC to 3.5VDC

- 0.05V Steps from 1.3VDC to 2.05VDC

? Power-Good Output Voltage Monitor

? Microprocessor Core Voltage Protection Against Shorted MOSFET

? Over-Voltage and Over-Current Fault Monitors

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

? Small Converter Size

- Constant Frequency Operation

- 200kHz Free-Running Oscillator; Programmable from 50kHz to over 1MHz

Applications

? Full Motherboard Power Regulation for Computers

? Low-Voltage Distributed Power Supplies