1

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HIP6018B

Advanced PWM and Dual Linear Power

Control

The HIP6018B provides the power control and protection for

three output voltages in high-performance microprocessor

and computer applications. The IC integrates a PWM

controllers, a linear regulator and a linear controller as well

as the monitoring and protection functions into a single

package. The PWM controller regulates the microprocessor

core voltage with a synchronous-rectified buck converter.

The linear controller regulates power for the GTL bus and

the linear regulator provides power for the clock driver

circuit.

The HIP6018B 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 1.3VDC to 2.05VDC in 0.05V steps. The precision

reference and voltage-mode control provide

±1% static

regulation. The linear regulator uses an internal pass device

to provide 2.5V

±2.5%. The linear controller drives an

external N-channel MOSFET to provide 1.5V

±2.5%.

The HIP6018B 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 over-

current function monitors the output current by using the

eliminating the need for a current sensing resistor.

Pinout

HIP6018B

(SOIC)

TOP VIEW

Features

• Provides 3 Regulated Voltages

- Microprocessor Core, Clock and GTL Power

• Drives N-Channel MOSFETs

• Operates from +3.3V, +5V and +12V Inputs

• Simple Single-Loop PWM Control Design

- Voltage-Mode Control

• Fast Transient Response

- High-Bandwidth Error Amplifier

- Full 0% to 100% Duty Ratios

• Excellent Output Voltage Regulation

- Core PWM Output:

±1% Over Temperature

- Other Outputs:

±2.5% Over Temperature

• TTL-Compatible 5-Bit Digital-to-Analog Core Output

Voltage Selection

• 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,

• Small Converter Size

- Constant Frequency Operation

- 200kHz Free-Running Oscillator; Programmable from

50kHz to over 1MHz

• Pb-Free Available (RoHS Compliant)

Applications

• Full Motherboard Power Regulation for Computers

• Low-Voltage Distributed Power Supplies

VCC

VID4

VID3

VID2

RT

FB2

VIN2

UGATE1

OCSET1

PGND

LGATE1

GND

FB3

VOUT2

PHASE1

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

14

13

FAULT

VID1

SS

FB1

DRIVE3

VID0

PGOOD

VSEN1

COMP1

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

DWG. #

HIP6018BCB*

0 to 70

24 Ld SOIC

M24.3

HIP6018BCBZ* (Note)

0 to 70

24 Ld SOIC (Pb-free) M24.3

* 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.

Data Sheet

April 1, 2005

FN4586.3

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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