FN4490 Rev 2.00

Page 1 of 15

April 1998

FN4490

Rev 2.00

April 1998

HIP6019

Advanced Dual PWM and Dual Linear Power Control

DATASHEET

The HIP6019 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.

The HIP6019 includes an Intel-compatible, TTL 5-input digital-

to-analog converter (DAC) that adjusts the core PWM 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 control provide

1% static regulation. The

second PWM controller is user-adjustable for output levels

between 3.0V and 3.5V with

2% accuracy. The adjustable

linear regulator uses an internal pass device to provide 2.5V

2.5%. The adjustable linear controller drives an external N-

Channel MOSFET to provide 1.5V

2.5%.

The HIP6019 monitors all the output voltages. A single Power

Good signal is issued when the core is within

10% of the DAC

setting and the other levels 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 functions monitor the output current by sensing the

voltage drop across the upper MOSFET’s rDS(ON), eliminating

the need for a current sensing resistor.

Pinout

HIP6019 (SOIC)

TOP VIEW

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 . . . . . . . . . . . . . . . . . . . 1.8VDC to 3.5VDC

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

- 0.05V Steps . . . . . . . . . . . . . . . . . . 1.8VDC 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

Applications

• Full Motherboard Power Regulation for Computers

• Low-Voltage Distributed Power Supplies

UGATE2

PHASE2

VID4

VID3

FB2

COMP2

SS

FAULT/RT

FB4

VCC

PGND

LGATE1

PHASE1

GATE3

COMP1

GND

VOUT4

VSEN2

UGATE1

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

OCSET2

VSEN1

FB3

VID1

VID0

OCSET1

FB1

Ordering Information

PART NUMBER

TEMP. (oC)

PACKAGE

PKG. NO.

HIP6019CB

0 to 70

28 Ld SOIC

M28.3

HIP6019EVAL1

Evaluation Board