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HIP6005

Buck Pulse-Width Modulator (PWM)

Controller and Output Voltage Monitor

The HIP6005 provides complete control and protection for a

DC-DC converter optimized for high-performance

microprocessor applications. It is designed to drive an

N-Channel MOSFET in a standard buck topology. The

HIP6005 integrates all of the control, output adjustment,

monitoring and protection functions into a single package.

The output voltage of the converter is easily adjusted and

precisely regulated. The HIP6005 includes a 5-input digital-

to-analog converter (DAC) that adjusts the output voltage

voltage-mode regulator hold the selected output voltage to

within

±1% over temperature and line voltage variations.

The HIP6005 provides simple, single feedback loop, voltage-

mode control with fast transient response. It includes a 200kHz

free-running triangle-wave oscillator that is adjustable from

below 50kHz to over 1MHz. The error amplifier features a

15MHz gain-bandwidth product and 6V/

µs slew rate which

enables high converter bandwidth for fast transient

performance. The resulting PWM duty ratio ranges from 0% to

100%.

The HIP6005 monitors the output voltage with a window

comparator that tracks the DAC output and issues a Power

Good signal when the output is within

±10%. The HIP6005

protects against over-current conditions by inhibiting PWM

operation. Built-in over-voltage protection triggers an

external SCR to crowbar the input supply. The HIP6005

MOSFET which eliminates the need for a current sensing

resistor.

Alpha™ is a trademark of Digital Equipment Corporation.

Pentium® is a registered trademark of Intel Corporation.

PowerPC™ is a trademark of IBM.

Features

• Drives N-Channel MOSFET

• Operates from +5V or +12V Input

• Simple Single-Loop Control Design

- Voltage-Mode PWM Control

• Fast Transient Response

- High-Bandwidth Error Amplifier

- Full 0% to 100% Duty Ratio

• Excellent Output Voltage Regulation

-

±1% Over Line Voltage and Temperature

• 5-Bit Digital-to-Analog Output Voltage Selection

• Power-Good Output Voltage Monitor

• 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

Applications

• Power Supply for Pentium®, Pentium Pro, PowerPC™ and

Alpha™ Microprocessors

• High-Power 5V to 3.xV DC-DC Regulators

• Low-Voltage Distributed Power Supplies.

Pinout

HIP6005

(SOIC)

TOP VIEW

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

HIP6005CB

0 to 70

20 Ld SOIC

M20.3

11

12

13

14

15

16

17

18

20

19

10

9

8

7

6

5

4

3

2

1

OCSET

SS

VID0

VID1

VID2

VID4

VID3

COMP

FB

NC

NC

OVP

BOOT

UGATE

PHASE

PGOOD

GND

Data Sheet

March 2000

File Number

4276.2

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

1-888-INTERSIL or 321-724-7143