The HIP6015 provides complete control and protection for a DC-DC converter optimized for high-performance microprocessor applications. It is designed to drive an N-Channel MOSFET in a standard buck topology. The HIP6015 integrates all of the control, output adjustment, monitoring and protection functions into a single package.

The output voltage of the converter is easily adjusted and precisely regulated. The HIP6015 includes a fully TTL-compatible 5-input digital-to-analog converter (DAC) that adjusts the output voltage from 2.1VDC to 3.5VDC in 0.1V increments and from 1.8VDC to 2.05VDC in 0.05V steps. The precision reference and voltage-mode regulator hold the selected output voltage to within ±1% over temperature and line voltage variations.

Features

• Drives N-Channel MOSFET

• Operates from +5V or +12V Input

• Simple Single-Loop Control Design

   - Voltage-Mode PWM Control

• Fast Transient Response

   - High-Bandwidth Error Amplifier

   - Full 0% to 100% Duty Ratio

• Excellent Output Voltage Regulation

   - ±1% Over Line Voltage and Temperature

• TTL-Compatible 5-Bit Digital-to-Analog Output Voltage Selection

   - Wide Range . . . . . . . . . . . . . . . . . . . 1.8VDC to 3.5VDC

   - 0.1V Binary Steps. . . . . . . . . . . . . . . 2.1VDC to 3.5VDC

   - 0.05V Binary Steps. . . . . . . . . . . . . 1.8VDC to 2.05VDC

• Power-Good Output Voltage Monitor

• 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

• Power Supply for Pentium®, Pentium Pro, Pentium II, PowerPC™, K6™, 6X86™ and Alpha™ Microprocessors

• High-Power 5V to 3.xV DC-DC Regulators

• Low-Voltage Distributed Power Supplies