FN4684 Rev 1.00

Page 1 of 15

March 8, 2005

FN4684

Rev 1.00

March 8, 2005

HIP6021

Advanced PWM and Triple Linear Power Controller

DATASHEET

The HIP6021 provides the power control and protection for

four output voltages in high-performance, graphics intensive

microprocessor and computer applications. The IC integrates

a voltage-mode PWM controller and three linear controllers,

as well as the monitoring and protection functions into a 28-

pin SOIC package. The PWM controller regulates the

microprocessor core voltage with a synchronous-rectified

buck converter. The linear controllers regulate the computer

system’s AGP 1.5V or 3.3V bus power, the 1.5V GTL bus

power, and the 1.8V power for the North/South Bridge core

voltage and/or cache memory circuits. The HIP6021 includes

an Intel-compatible, TTL 5-input digital-to-analog converter

0.1V increments. The precision reference and voltage-mode

control provide

1% static regulation. The AGP bus power

TTL-compatible signal applied at the SELECT pin, for levels

of 1.5V or 3.3V with

3% accuracy. Based on the status of the

FIX pin, the other two linear regulators provide either fixed

output voltages of 1.5V

or user-adjustable by means of an external resistor divider. All

linear controllers can employ either N-channel MOSFETs or

bipolar NPNs for the pass transistor.

The HIP6021 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 under-

voltage 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

Applications

• Motherboard Power Regulation for Computers

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

(FIX Pin)

• 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 Output Voltage Regulation

- Core PWM Output:

1% Over Temperature

- Other Outputs:

3% Over Temperature

• TTL-Compatible 5-Bit DAC Microprocessor Core Output

Voltage Selection

• Power-Good Output Voltage Monitor

• Over-Voltage and Over-Current Fault Monitors

- Switching Regulator Does Not Require Extra Current

• Small Converter Size

- Constant Frequency Operation

- 200kHz Free-Running Oscillator; Programmable From

50kHz to Over 1MHz

- Small External Component Count

• Pb-Free Available (RoHS Compliant)

Pinout

HIP6021 (SOIC)

TOP VIEW

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

DWG. #

HIP6021CB

0 to 70

28 Ld SOIC

M28.3

HIP6021CBZ (Note)

0 to 70

28 Ld SOIC (Pb-free) M28.3

HIP6021EVAL1

Evaluation Board

Add “-T” suffix for tape and reel.

NOTE: Intersil Pb-free products employ special Pb-free material sets; molding

compounds/die attach materials and 100% matte tin plate termination finish, which are

RoHS compliant and compatible with both SnPb and Pb-free soldering operations.

Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

DRIVE2

FIX

VID4

VID3

VSEN2

SELECT

SS

FAULT/RT

VSEN4

VCC

PGND

LGATE

PHASE

DRIVE3

COMP

GND

VAUX

DRIVE4

UGATE

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

PGOOD

VID2

SD

VSEN1

VSEN3

VID1

VID0

OCSET

FB

NOT RECOMMENDED FOR NEW DESIGNS

NO RECOMMENDED REPLACEMENT

contact our Technical Support Center at

1-888-INTERSIL or www.intersil.com/tsc