Intersil HIP6521 PWM & Triple Linear Power Controller Data Sheet
Summary
The HIP6521 is a specialized power controller integrated circuit designed for critical motherboard power regulation in demanding microprocessor applications. It provides precise power control and four regulated voltages, managing vital rails like the Memory Core, AGP bus, Clock, and North/South Bridge. Utilizing both PWM and linear controllers, it ensures stable voltage delivery while incorporating safety features like overcurrent monitoring. The documentation details its comprehensive technical specifications, ensuring engineers can integrate this reliable solution into high-speed computer systems requiring robust power management.
Page 1 Text Content
HIP6521
Data Sheet August 2000 File Number 4837.1
PWM and Triple Linear Power Controller Features The HIP6521 provides the power control and protection for Provides 4 Regulated Voltages four output voltages in high-performance microprocessor Memory Core, AGP, Clock, and Memory Controller Hub and computer applications. The IC integrates a voltage- Power mode PWM controller and three linear controllers, as well as
ACPI Compatible
monitoring and protection functions into a 16-lead SOIC
package. The PWM controller is intended to regulate the Drives Bipolar Linear Pass Transistors
microprocessor memory core voltage with a synchronous-
Externally Resistor-Adjustable Outputs
rectified buck converter. The linear controllers are intended
Simple Single-Loop Control Design
to regulate the computer system’s AGP 1.5V bus power, the
2.5V clock power, and the 1.8V power for the North/South Voltage-Mode PWM Control
Bridge core voltage and/or cache memory circuits. Both the
Fast PWM Converter Transient Response
switching regulator and linear voltage references provide
High-Bandwidth Error Amplifier
±2% of static regulation over line, load, and temperature
Full 0% to 100% Duty Ratio
ranges. All outputs are user-adjustable by means of an
external resistor divider. All linear controllers employ bipolar Excellent Output Voltage Regulation NPNs for the pass transistors. All Outputs: ±2% Over Temperature Overcurrent Fault Monitors
The HIP6521 monitors all the output voltages. The PWM
Switching Regulator Does Not Require Extra Current
controller’s adjustable overcurrent function monitors the
Sensing Element, Uses MOSFET’s r DS(ON)
output current by using the voltage drop across the upper
MOSFET’s r DS(ON). The linear regulator outputs are Small Converter Size monitored via the FB pins for undervoltage events. 300k Hz Constant Frequency Operation Small External Component Count
Ordering Information
Related Literature
PART NUMBER TEMP. RANGE (o C) PACKAGE NO. Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices
HIP6521CB 0 to 70 16 Ld SOIC M16.15
(SMDs)”
HIP6521EVAL1 Evaluation Board
Pinout
Applications HIP6521 (SOIC)
TOP VIEW
Motherboard Power Regulation for Computers
DRIVE2 FB3 FB2 DRIVE3 FB FB4 COMP DRIVE4 GND OCSET PHASE VCC BOOT LGATE 8UGATE PGND
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 Corporation. Copyright © Intersil Corporation 2000
Page Summary Contents For Intersil HIP6521 PWM & Triple Linear Power Controller Data Sheet
Manual Details
| Brand | Linear |
|---|---|
| Pages | 13 |
| File Size | 154.54 KB |
| Published | June 20, 2026 |
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Frequently Asked Questions
What key components does the HIP6521 regulate voltage for?
It provides controlled voltages for Microprocessor Memory Core, AGP, Clock, and North/South Bridge circuits.
How does the device monitor output stability?
Monitoring is provided through Overcurrent Fault Monitors and by detecting undervoltage events via specific FB pins.
Are there special handling requirements when using this IC?
Yes, caution is required as these devices are sensitive to electrostatic discharge; proper IC Handling Procedures must be followed.