Overview

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The HIP6521 provides the power control and protection for four output voltages in high-performance microprocessor and computer applications. The IC integrates a voltage-mode PWM controller and three linear controllers, as well as monitoring and protection functions into a 16 Ld SOIC package. The PWM controller is intended to regulate the microprocessor memory core voltage with a synchronous-rectified buck converter. The linear controllers are intended 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 Bridge core voltage and/or cache memory circuits. Both the switching regulator and linear voltage references provide ±2% of static regulation over line, load, and temperature ranges. All outputs are user-adjustable by means of an external resistor divider. All linear controllers employ bipolar NPNs for the pass transistors. The HIP6521 monitors all the output voltages. The PWM controller's adjustable overcurrent function monitors the output current by using the voltage drop across the upper MOSFET's rDS(ON). The linear regulator outputs are monitored via the FB pins for undervoltage events.

HIP6521 Functional Diagram
HIP6521 Functional Diagram
  • Provides 4 Regulated Voltages
  • Memory Core, AGP, Clock, and Memory Controller Hub Power
  • ACPI Compatible
  • Drives Bipolar Linear Pass Transistors
  • Externally Resistor-Adjustable Outputs
  • Simple Single-Loop Control Design
  • Voltage-Mode PWM Control
  • Fast PWM Converter Transient Response
  • High-Bandwidth Error Amplifier
  • Full 0% to 100% Duty Ratio
  • Excellent Output Voltage Regulation
  • All Outputs: ±2% Over Temperature
  • Overcurrent Fault Monitors
  • Switching Regulator Does Not Require Extra Current Sensing Element, Uses MOSFET's rDS(ON)
  • Small Converter Size
  • 300kHz Constant Frequency Operation
  • Small External Component Count
  • Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

  • Motherboard Power Regulation for Computers

Documentation

= Featured Documentation
Type Title Date
Datasheet
HIP6521 Datasheet
PDF 681 KB
Brochure
Power Products Brochure
PDF 8.73 MB
Brochure
Industrial Power Management Brochure
PDF 5.49 MB 日本語
White Paper
How Green is Your Cloud?
PDF 295 KB
End Of Life Notice
PLC16081 - Q3 Generic PLC
PDF 206 KB
Product Change Notice
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site
PDF 152 KB
Application Note
AN1681: Grounding Techniques
PDF 509 KB
Application Note
AN1684: Nonideality of Ground
PDF 397 KB
Manual - Development Tools
HIP6521EVAL1 User Guide
PDF 862 KB
9 items

Design & Development

Boards & Kits

HIP6521EVAL1

HIP6521EVAL1

Evaluation
Learn More

Evaluation Board for Peripheral Power Controller for Pentium® 4 Computer Systems

The HIP6521EVAL1 evaluates the HIP6521 PWM and triple linear power controller. This evaluation board embodies a 4-output regulator solution targeted at supplying power...

Featured Documents:
HIP6521EVAL1 User Guide

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    Buy / Sample
    Part Number
    HIP6521CB
    circleObsolete
    memory
    view_in_ar
    		SOICN Tube 960
    HIP6521CB-T
    circleObsolete
    memory
    view_in_ar
    		SOICN Reel 2500
    HIP6521CBZ
    circleObsolete
    memory
    view_in_ar
    		SOICN Tube 960
    HIP6521CBZ-T
    circleObsolete
    memory
    view_in_ar
    		SOICN Reel 2500
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