TM
HIP6004B
Data Sheet
February 1999
HIP6004B
FN4567.2
Buck and Synchronous-Rectifier (PWM)
Controller and Output Voltage Monitor
The HIP6004B provides complete control and protection for
a DC-DC converter optimized for high-performance
microprocessor applications. It is designed to drive two
N-Channel MOSFETs in a synchronous-rectified buck
topology. The HIP6004B 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 HIP6004B includes a fully TTL-
compatible 5-input digital-to-analog converter (DAC) that
adjusts the output voltage from 1.3V
DC
to 2.05V
DC
in
0.05V and from 2.1V
DC
to 3.5V
DC
in 0.1V increments
steps. The precision reference and voltage-mode regulator
hold the selected output voltage to within
±1%
over
temperature and line voltage variations.
The HIP6004B 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 HIP6004B 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
HIP6004B protects against over-current and overvoltage
conditions by inhibiting PWM operation. Additional built-in
overvoltage protection triggers an external SCR to crowbar
the input supply. The HIP6004B monitors the current by
using the r
DS(ON)
of the upper MOSFET which eliminates
the need for a current sensing resistor.
Features
• Drives Two N-Channel MOSFETs
• 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
• TTL-Compatible 5-Bit Digital-to-Analog Output
Voltage Selection
- Wide Range . . . . . . . . . . . . . . . . . . . 1.3V
DC
to 3.5V
DC
- 0.1V Binary Steps . . . . . . . . . . . . . . 2.1V
DC
to 3.5V
DC
- 0.05V Binary Steps . . . . . . . . . . . . 1.3V
DC
to 2.05V
DC
• Power-Good Output Voltage Monitor
• Over-Voltage and Over-Current Fault Monitors
- Does Not Require Extra Current Sensing Element,
Uses MOSFET’s r
DS(ON)
• Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator Programmable from
50kHz to over 1MHz
Applications
• Power Supply for Pentium®, Pentium Pro, Pentium II,
PowerPC™, K6™, 6X86™ and Alpha™ Microprocessors
• High-Power 5V to 3.xV DC-DC Regulators
• Low-Voltage Distributed Power Supplies
Pinout
HIP6004B
(SOIC, TSSOP)
TOP VIEW
VSEN
1
2
3
4
5
6
7
8
9
20 RT
19 OVP
18 VCC
17 LGATE
16 PGND
15 BOOT
14 UGATE
13 PHASE
12 PGOOD
11 GND
Ordering Information
PART NUMBER
HIP6004BCB
HIP6004BCV
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
PACKAGE
20 Ld SOIC
20 Ld TSSOP
PKG.
NO.
M20.3
M20.173
OCSET
SS
VID0
VID1
VID2
VID3
VID4
COMP
NOTE: When ordering, use the entire part number. Add the suffix T
to obtain the TSSOP variant in tape and reel, e.g., HIP6004BCV-T.
FB 10
6X86™ is a trademark of Cyrix Corporation.
Alpha™ is a trademark of Digital Equipment Corporation.
K6™ is a trademark of Advanced Micro Devices, Inc.
Pentium® is a registered trademark of Intel Corporation.
PowerPC™ is a trademark of IBM.
74
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
INTERSIL [ INTERSIL CORPORATION ]
