The HIP6019B provides the power control and protection for four output voltages in high-performance microprocessor and computer applications. The IC integrates two PWM controllers, a linear regulator and a linear controller as well as the monitoring and protection functions into a single 28 lead SOIC package. One PWM controller regulates the microprocessor core voltage with a synchronous-rectified buck converter, while the second PWM controller supplies the computer’s 3.3V power with a standard buck converter. The linear controller regulates power for the GTL bus and the linear regulator provides power for the clock driver circuits.

Features
• Provides 4 Regulated Voltages
    - Microprocessor Core, I/O, Clock Chip and GTL Bus
• Drives N-Channel MOSFETs
• Operates from +5V and +12V Inputs
• Simple Single-Loop Control Designs
    - Voltage-Mode PWM Control
• Fast Transient Response
    - High-Bandwidth Error Amplifiers
    - Full 0% to 100% Duty Ratios
• Excellent Output Voltage Regulation
    - Core PWM Output: ±1% Over Temperature
    - I/O PWM Output: ±2% 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 . . . . . . . . . . . . . . . . . . . . 2.1VDC to 3.5VDC
    - 0.05V Steps . . . . . . . . . . . . . . . . . . 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 1MHz
• Pb-Free Available (RoHS Compliant)

Applications
• Full Motherboard Power Regulation for Computers
• Low-Voltage Distributed Power Supplies