HIP6004ACB INTERSIL [Intersil Corporation], HIP6004ACB Datasheet

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HIP6004ACB

Manufacturer Part Number
HIP6004ACB
Description
Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor
Manufacturer
INTERSIL [Intersil Corporation]
Datasheets

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Buck and Synchronous-Rectifier (PWM)
Controller and Output Voltage Monitor
The HIP6004A 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 HIP6004A 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 HIP6004A includes a fully TTL-
compatible 5-input digital-to-analog converter (DAC) that
adjusts the 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 regulator hold the
selected output voltage to within 1% over temperature and
line voltage variations.
The HIP6004A 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/ms slew rate which enables high converter bandwidth for
fast transient performance. The resulting PWM duty ratio
ranges from 0% to 100%.
The HIP6004A 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 HIP6004A
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 HIP6004A monitors the current by using the
r
a current sensing resistor.
Ordering Information
HIP6004ACB
DS(ON)
PART NUMBER
Alpha Micro™ is a trademark of Digital Computer Equipment Corporation.
of the upper MOSFET which eliminates the need for
Pentium® is a registered trademark of Intel Corporation.
K6™ is a trademark of Advanced Micro Devices, Inc.
RANGE (
TEMP.
0 to 70
6X86™ is a trademark of Cyrix Corporation.
2-62
o
C)
20 Ld SOIC
PowerPC™ is a trademark of IBM.
Data Sheet
PACKAGE
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
M20.3
PKG.
NO.
http://www.intersil.com or 407-727-9207
Features
• Drives Two N-Channel MOSFETs
• 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 . . . . . . . . . . . . . . . . . . . 1.8V
- 0.1V Binary Steps . . . . . . . . . . . . . . . 2.1V
- 0.05V Binary Steps . . . . . . . . . . . . . 1.8V
- Does Not Require Extra Current Sensing Element,
- Constant Frequency Operation
- 200kHz Free-Running Oscillator Programmable from
PowerPC™, K6™, 6X86™ and Alpha™ Microprocessors
Uses MOSFET’s r
50kHz to over 1MHz
1% Over Line Voltage and Temperature
October 1997
OCSET
COMP
V
VID0
VID1
VID2
VID3
VID4
SEN
SS
FB
10
1
2
3
4
5
6
7
8
9
DS(ON)
TOP VIEW
HIP6004A
(SOIC)
|
Copyright
File Number 4417.1
20
19
18
17
16
15
14
13
12
11
©
HIP6004A
RT
OVP
V
LGATE
PGND
BOOT
UGATE
PHASE
PGOOD
GND
Intersil Corporation 1999
CC
DC
DC
DC
to 2.05V
to 3.5V
to 3.5V
DC
DC
DC

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HIP6004ACB Summary of contents

Page 1

... Ordering Information TEMP. o PART NUMBER RANGE ( C) PACKAGE HIP6004ACB SOIC 6X86™ trademark of Cyrix Corporation. Alpha Micro™ trademark of Digital Computer Equipment Corporation. K6™ trademark of Advanced Micro Devices, Inc. Pentium® registered trademark of Intel Corporation. PowerPC™ trademark of IBM. ...

Page 2

Typical Application PGOOD SS OVP RT VID0 VID1 VID2 D/A VID3 VID4 FB Block Diagram V SEN OCSET REFERENCE VID0 TTL D/A VID1 CONVERTER VID2 VID3 (DAC) VID4 FB COMP RT 2-63 HIP6004A +12V V CC OCSET MONITOR AND EN ...

Page 3

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

Page 4

Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted (Continued) PARAMETER POWER GOOD Upper Threshold (V /DACOUT) SEN Lower Threshold (V /DACOUT) SEN Hysteresis (V /DACOUT) SEN PGOOD Voltage Low Typical Performance Curves 1000 R PULLUP T TO +12V 100 10 ...

Page 5

Functional Pin Description SEN OCSET VID0 4 17 VID1 5 16 VID2 6 15 VID3 14 7 VID4 8 13 COMP Pin 1) SEN ( This ...

Page 6

Functional Description Initialization The HIP6004A automatically initializes upon receipt of power. Special sequencing of the input supplies is not necessary. The Power-On Reset (POR) function continually monitors the input supply voltages. The POR monitors the bias voltage at the V ...

Page 7

For an equation for the ripple current see the section under component guidelines titled ‘Output Inductor Selection’ . PIN NAME VID4 VID3 VID2 VID1 VID0 ...

Page 8

Please note that the capacitors C and C each represent numerous physical capacitors. O Locate the HIP6004A within 3 inches of the MOSFETs, Q and Q . The circuit traces for the MOSFETs’ gate and 2 source ...

Page 9

F with the capabilities of the error amplifier. The Closed P2 Loop Gain is constructed on the log-log graph of Figure 8 by adding the Modulator Gain (in dB) to the Compensation Gain (in dB). This is equivalent to multiplying ...

Page 10

With a +12V input, and output voltage level equal to DACOUT the longest response time. FALL Input Capacitor Selection Use a mix of input bypass capacitors to control the voltage overshoot across the MOSFETs. Use ...

Page 11

Schottky Selection Rectifier clamp that catches the negative inductor 2 swing during the dead time between turning off the lower MOSFET and turning on the upper MOSFET. The diode must be a Schottky type to prevent the ...

Page 12

HIP6004A DC-DC Converter Application Circuit Figure 11 shows an application circuit of a DC-DC Converter for an Intel Pentium Pro Microprocessor. Detailed information on the circuit, including a complete Bill-of- Materials and circuit board description, can be found in L ...

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