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HIP6521 Datasheet, PDF (1/13 Pages) Intersil Corporation – PWM and Triple Linear Power Controller | |||
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TM
Data Sheet
HIP6521
August 2000 File Number 4837.1
PWM and Triple Linear Power Controller
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-lead SOIC
package. The PWM controller is intended to regulate the
microprocessor memory core voltage with a synchronous-
rectiï¬ed buck converter. The linear controllers are intended
to regulate the computer systemâs 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
controllerâs adjustable overcurrent function monitors the
output current by using the voltage drop across the upper
MOSFETâs rDS(ON). The linear regulator outputs are
monitored via the FB pins for undervoltage events.
Ordering Information
PART NUMBER TEMP. RANGE (oC) PACKAGE
PKG.
NO.
HIP6521CB
0 to 70
16 Ld SOIC M16.15
HIP6521EVAL1 Evaluation Board
Applications
⢠Motherboard Power Regulation for Computers
Features
⢠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 Ampliï¬er
- 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 MOSFETâs rDS(ON)
⢠Small Converter Size
- 300kHz Constant Frequency Operation
- Small External Component Count
Related Literature
⢠Technical Brief TB363 âGuidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)â
Pinout
HIP6521 (SOIC)
TOP VIEW
DRIVE2 1
FB2 2
FB 3
COMP 4
GND 5
PHASE 6
BOOT 7
UGATE 8
16 FB3
15 DRIVE3
14 FB4
13 DRIVE4
12 OCSET
11 VCC
10 LGATE
9 PGND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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