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HIP6021A Datasheet Advanced Pwm And Triple Linear Power Controller

Manufacturer: Intersil (now Renesas)

Overview: HIP6021A Data Sheet November 1999 File Number 4793 Advanced PWM and Triple Linear Power Controller The HIP6021A provides the power control and protection for four output voltages in high-performance, graphics intensive microprocessor and puter 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. The synchronous-rectified buck converter includes an Intelpatible, TTL 5-input digital-to-analog converter (DAC) that adjusts the core PWM output voltage from 1.3VDC to 2.05VDC in 0.05V steps and from 2.1VDC to 3.5VDC in 0.1V increments. The precision reference and voltage-mode control provide ±1% static regulation. A TTL-patible signal applied to the SELECT pin dictates which method of control is used for the AGP bus power: a low state results in linear control of the AGP bus to 1.5V, while a high state transitions the output through a linearly controlled softstart to 3.3V, followed by full enhancement of the external MOSFET to pass the input voltage. The other two linear regulators provide fixed output voltages of 1.5V GTL bus power and 1.8V power for the North/South Bridge core and/or cache memory. These levels are user-adjustable by means of an external resistor divider and pulling the FIX pin low. All linear controllers can employ either N-Channel MOSFETs or bipolar NPNs for the pass transistor. The HIP6021A monitors all the output voltages. A single Power Good signal is issued when the core is within ±10% of the DAC setting and all other outputs are above their undervoltage levels. Additional built-in over-voltage protection for the core output uses the lower MOSFET to prevent output voltages above 115% of the DAC setting. The PWM controller’s over-current function monitors the output current by using the voltage drop across the upper MOSFET’s rDS(ON).

Key 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 Outp.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Renesas Logo HIP6021 Advanced PWM and Triple Linear Power Controller Renesas

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