Advanced Dual PWM and Linear Power Control The HIP6017 provides power control and protection for three output voltages in high performance microprocessors and computer applications. The IC integrates a PWM controller, linear regulator and linear controller as well as monitoring and protection functions into a 28-pin SOIC package. Regulates PWM controller microprocessor core voltage with synchronous rectification buck converter. The GTL bus and linear regulators supply power to the linear regulator controller to supply power to the clock drive circuit. The HIP6017 includes an Intel compatible TTL 5 input digital-to-analog converter (DAC) that adjusts the PWM core output voltage from 2.1VDC to 3.5VDC in 0.1V increments from 1.8VDC to 2.05VDC in 0.05V steps. Precision reference and voltage mode control provide ±1% static regulation. The internal transfer device used by the linear regulator provides ±2.5% of 2.5V. The linear controller drives an external N-channel MOSFET providing ±2.5% of 1.5V. The HIP6017 monitors all output voltages. A single power good signal is issued when the core is at ±10% of the DAC setting and other levels are above the undervoltage level. Additional built-in overvoltage protection The core output features a low MOSFET to prevent the output voltage from going above the 115% setting of the DAC. The PWM output current monitoring function for overcurrent uses the voltage drop resistance RDS(ON) of the upper MOSFET, thereby eliminating the need for a current sense resistor.

Features • Provides 3 voltage regulation
- Microprocessor core, clock and GTL power • Drive N-channel MOSFET
• Operating +3.3 V, +5 V and +12 V inputs • Simple single loop PWM control design
- Voltage Mode Control • Fast Transient Response
- High bandwidth error amplifier
- Full 0% to 100% duty cycle • Excellent output voltage regulation
- Core PWM output: ±1% temperature
- Other outputs: ±2.5% temperature TTL compatible 5-bit digital to analog core output voltage selection
-Wide .................1.8VDC to 3.5VDC
-0.1V steps ................. 2.1VDC to 3.5VDC
-0.05V in steps ............ 1.8VDC to 2.05VDC
• Power good output voltage monitor • Microprocessor core voltage protection against shorted MOSFETs • Overvoltage and overcurrent fault monitors
- No need for additional current sensing elements, utilizes the impedance RDS(ON) of the MOSFET
• The size of a small converter
- constant frequency operation
-200kHz free running oscillator, programmable to over 1MHz for 50kHz applications • Full power regulation for computer motherboards • Low voltage distributed power supply