HIP6521_06 Datasheet, PDF (1/13 Pages) Intersil Corporation – PWM and Triple Linear Power Controller

®
Data Sheet
October 16, 2006
HIP6521
FN4837.5
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 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 r_DS(ON). The linear regulator outputs are
monitored via the FB pins for undervoltage events.
Ordering Information
PART
NUMBER
PART
TEMP.
PKG.
MARKING RANGE (°C) PACKAGE DWG. #
HIP6521CB HIP6521CB 0 to 70 16 Ld SOIC M16.15
HIP6521CBZ 6521CBZ
(Note)
0 to 70 16 Ld SOIC M16.15
(Pb-free)
HIP6521EVAL1 Evaluation Board
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-02.
Add “-T” suffix for tape and reel.
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 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 r_DS(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}
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
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.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2000, 2004, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.