HIP6005BCB Intersil Corporation, HIP6005BCB Datasheet

HIP6005BCB

Manufacturer Part Number

HIP6005BCB

Description

Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor

Manufacturer

Intersil Corporation

Datasheet

1.HIP6005BCB.pdf (11 pages)

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Buck Pulse-Width Modulator (PWM)

Controller and Output Voltage Monitor

The HIP6005B 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

HIP6005B 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 HIP6005B includes a fully

TTL-compatible 5-input digital-to-analog converter (DAC)

that adjusts the output voltage from 1.3V

0.05V increments and from 2.1V

The precision reference and voltage-mode regulator hold the

selected output voltage to within 1% over temperature and

line voltage variations.

The HIP6005B 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/ s slew rate which

enables high converter bandwidth for fast transient

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

100%.

The HIP6005B 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 HIP6005B

protects against over-current and over-voltage conditions by

inhibiting PWM operation. Additional built-in over-voltage

protection triggers an external SCR to crowbar the input

supply. The HIP6005B monitors the current by using the

a current sensing resistor.

Ordering Information

NOTE: When ordering, use the entire part number. Add the sufﬁx T

to obtain the TSSOP variant in tape and reel, e.g., HIP6005BCV-T.

DS(ON)

HIP6005BCB

HIP6005BCV

PART NUMBER

of the upper MOSFET which eliminates the need for

RANGE (

TEMP.

0 to 70

2-110

20 Ld SOIC

20 Ld TSSOP

to 3.5V

Data Sheet

PACKAGE

to 2.05V

in 0.1V steps.

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

M20.3

M20.173

PKG.

NO.

http://www.intersil.com or 407-727-9207

Features

• Drives N-Channel MOSFET

• Operates from +5V or +12V Input

• Simple Single-Loop Control Design

• Fast Transient Response

• Excellent Output Voltage Regulation

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

• Power-Good Output Voltage Monitor

• Over-Voltage and Over-Current Fault Monitors

• Small Converter Size

Applications

• Power Supply for Pentium®, Pentium Pro, Pentium II,

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

• Low-Voltage Distributed Power Supplies

Pinout

- Voltage-Mode PWM Control

- High-Bandwidth Error Ampliﬁer

- Full 0% to 100% Duty Ratio

Selection

- Wide Range . . . . . . . . . . . . . . . . . . . 1.3V

- 0.1V Binary Steps . . . . . . . . . . . . . . 2.1V

- 0.05V Binary Steps . . . . . . . . . . . . 1.3V

- Does Not Require Extra Current Sensing Element,

- Constant Frequency Operation

- 200kHz Free-Running Oscillator Programmable from

PowerPC™, K6™, 6X86™ and Alpha™ Microprocessors

Alpha Micro™ is a trademark of Digital Computer Equipment Corporation

Uses MOSFET’s r

50kHz to over 1MHz

1% Over Line Voltage and Temperature

February 1999

OCSET

COMP

VSEN

VID0

VID1

VID2

VID3

VID4

Pentium® is a registered trademark of Intel Corporation.

DS(ON)

K6™ is a trademark of Advanced Micro Devices.

(SOIC, TSSOP)

PowerPC™ is a registered trademark of IBM.

TOP VIEW

HIP6005B

6X86™ is a trademark of Cyrix Corporation.

File Number 4568.2

HIP6005B

OVP

VCC

BOOT

UGATE

PHASE

PGOOD

GND

Intersil Corporation 1999

to 2.05V

to 3.5V

Related parts for HIP6005BCB

HIP6005BCB Summary of contents

Page 1

... DS(ON) a current sensing resistor. Ordering Information TEMP. o PART NUMBER RANGE ( C) PACKAGE HIP6005BCB SOIC HIP6005BCV TSSOP NOTE: When ordering, use the entire part number. Add the sufﬁ obtain the TSSOP variant in tape and reel, e.g., HIP6005BCV-T. 2-110 Features • ...

Page 2

Typical Application PGOOD SS OVP RT VID0 VID1 VID2 D/A VID3 VID4 FB Block Diagram VSEN OCSET REFERENCE VID0 D/A VID1 VID2 CONVERTER VID3 (DAC) VID4 FB COMP RT 2-111 HIP6005B +12V VCC OCSET MONITOR AND PROTECTION BOOT OSC UGATE ...

Page 3

Absolute Maximum Ratings Supply Voltage +15V CC ...

Page 4

Typical Performance Curves 1000 R PULLUP T TO +12V 100 10 R PULLDOWN 100 SWITCHING FREQUENCY (kHz) FIGURE 1. R RESISTANCE vs FREQUENCY T Functional Pin Description 1 VSEN 20 OCSET ...

Page 5

BOOT (Pin 15) This pin provides bias voltage to the upper MOSFET driver. A bootstrap circuit may be used to create a BOOT voltage suitable to drive a standard N-Channel MOSFET. NC (Pin 16) No connection. NC (Pin 17) No ...

Page 6

The over-current function cycles the soft-start function in a hiccup mode to provide fault protection. A resistor (R programs the over-current trip level. An internal 200 A current sink develops a voltage across R OCSET V . When the voltage ...

Page 7

V IN HIP6005B UGATE Q 1 PHASE RETURN FIGURE 5. PRINTED CIRCUIT BOARD POWER AND GROUND PLANES OR ISLANDS Figure 5 shows the critical power components of the converter. To minimize the voltage overshoot the interconnecting ...

Page 8

Compensation Break Frequency Equations -------------------------------------------------------- - ----------------------------------- - ------------------------------------------------------ - F = ----------------------------------- - ...

Page 9

One of the parameters limiting the converter’s response to a load transient is the time required to change the inductor current. Given a sufficiently fast control loop design, the HIP6005B will provide either 0% or 100% duty cycle in response ...

Page 10

D BOOT VCC - + V D BOOT HIP6005B C BOOT UGATE PHASE - + GND NOTE G FIGURE 9. UPPER GATE DRIVE - BOOTSTRAP OPTION +12V +5V OR LESS VCC BOOT ...

Page 11

... All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certiﬁcation. Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with- out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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