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HIP6020 Datasheet, PDF (1/15 Pages) Intersil Corporation – Advanced Dual PWM and Dual Linear Power Controller | |||
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Data Sheet
HIP6020
February 1999
File Number 4683
Advanced Dual PWM and Dual Linear
Power Controller
The HIP6020 provides the power control and protection for
four output voltages in high-performance, graphics intensive
microprocessor and computer applications. The IC
integrates two PWM controllers and two linear controllers, as
well as the monitoring and protection functions into a 28-pin
SOIC package. One PWM controller regulates the
microprocessor core voltage with a synchronous-rectiï¬ed
buck converter. The second PWM controller supplies the
computer systemâs AGP 1.5V or 3.3V bus power with a
standard buck converter. The linear controllers regulate
power for the 1.5V GTL bus and the 1.8V power for the
North/South Bridge core voltage and/or cache memory
circuits.
The HIP6020 includes an Intel-compatible, TTL 5-input
digital-to-analog converter (DAC) that adjusts the core PWM
output voltage from 1.3VDC to 2.05VDC in 0.05V steps and
from 2.1VDC to 3.5VDC in 0.1V increments. The precision
reference and voltage-mode control provide ±1% static
regulation. The second PWM controllerâs output is user-
selectable, through a TTL-compatible signal applied at the
SELECT pin, for levels of 1.5V or 3.3V with ±3% accuracy.
The linear regulators use external N-Channel MOSFETs or
bipolar NPN pass transistors to provide ï¬xed output voltages
of 1.5V ±3% (VOUT3) and 1.8V ±3% (VOUT4).
The HIP6020 monitors all the output voltages. A single
Power Good signal is issued when the core is within ±10% of
the DAC setting and all other outputs are above their under-
voltage levels. Additional built-in over-voltage protection for
the core output uses the lower MOSFET to prevent output
voltages above 115% of the DAC setting. The PWM
controllersâ over-current function monitors the output current
by using the voltage drop across the upper MOSFETâs
rDS(ON), eliminating the need for a current sensing resistor.
Ordering Information
TEMP.
PART NUMBER RANGE (oC)
PACKAGE
HIP6020CB
0 to 70 28 Ld SOIC
HIP6020EVAL1 Evaluation Board
PKG.
NO.
M28.3
Features
⢠Provides 4 Regulated Voltages
- Microprocessor Core, AGP Bus, North/South Bridge
and/or Cache Memory, and GTL Bus Power
⢠Drives N-Channel MOSFETs
⢠Linear Regulator Drives Compatible with both MOSFET
and Bipolar Series Pass Transistors
⢠Simple Single-Loop Control Designs
- Voltage-Mode PWM Control
⢠Fast PWM Converter Transient Response
- High-Bandwidth Error Ampliï¬ers
- Full 0% to 100% Duty Ratios
⢠Excellent Output Voltage Regulation
- Core PWM Output: ±1% Over Temperature
- AGP Bus PWM Output: ±3% Over Temperature
- Other Outputs: ±3% Over Temperature
⢠TTL-Compatible 5 Bit DAC Microprocessor Core Output
Voltage Selection
- Wide Range . . . . . . . . . . . . . . . . . . . 1.3VDC to 3.5VDC
⢠Power-Good Output Voltage Monitor
⢠Over-Voltage and Over-Current Fault Monitors
- Switching Regulators Do Not Require Extra Current
Sensing Elements, Use MOSFETâs rDS(ON)
⢠Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator; Programmable From
50kHz to Over 1MHz
- Small External Component Count
Applications
⢠Motherboard Power Regulation for Computers
Pinout
HIP6020 (SOIC)
TOP VIEW
UGATE2 1
PHASE2 2
VID4 3
VID3 4
VID2 5
VID1 6
VID0 7
PGOOD 8
OCSET2 9
VSEN2 10
SELECT 11
SS 12
FAULT/RT 13
VSEN4 14
28 VCC
27 UGATE1
26 PHASE1
25 LGATE1
24 PGND
23 OCSET1
22 VSEN1
21 FB1
20 COMP1
19 VSEN3
18 DRIVE3
17 GND
16 VAUX
15 DRIVE4
2-281
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
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