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HIP6019CB Datasheet(PDF) 1 Page - Intersil Corporation

Part # HIP6019CB
Description  Advanced Dual PWM and Dual Linear Power Control
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

HIP6019CB Datasheet(HTML) 1 Page - Intersil Corporation

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2-252
HIP6019
Advanced Dual PWM and Dual Linear
Power Control
The HIP6019 provides the power control and protection for four
output voltages in high-performance microprocessor and
computer applications. The IC integrates two PWM controllers,
a linear regulator and a linear controller as well as the
monitoring and protection functions into a single 28 lead SOIC
package. One PWM controller regulates the microprocessor
core voltage with a synchronous-rectified buck converter, while
the second PWM controller supplies the computer’s 3.3V power
with a standard buck converter. The linear controller regulates
power for the GTL bus and the linear regulator provides power
for the clock driver circuits.
The HIP6019 includes an Intel-compatible, TTL 5-input digital-
to-analog converter (DAC) that adjusts the core PWM output
voltage from 2.1VDC to 3.5VDC in 0.1V increments and from
1.8VDC to 2.05VDC in 0.05V steps. The precision reference
and voltage-mode control provide
±1% static regulation. The
second PWM controller is user-adjustable for output levels
between 3.0V and 3.5V with
±2% accuracy. The adjustable
linear regulator uses an internal pass device to provide 2.5V
±2.5%. The adjustable linear controller drives an external N-
Channel MOSFET to provide 1.5V
±2.5%.
The HIP6019 monitors all the output voltages. A single Power
Good signal is issued when the core is within
±10% of the DAC
setting and the other levels 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 controller’s over-
current functions monitor the output current by sensing the
voltage drop across the upper MOSFET’s rDS(ON), eliminating
the need for a current sensing resistor.
Pinout
HIP6019 (SOIC)
TOP VIEW
Features
• Provides 4 Regulated Voltages
- Microprocessor Core, I/O, Clock Chip and GTL Bus
• Drives N-Channel MOSFETs
• Operates from +5V and +12V Inputs
• Simple Single-Loop Control Designs
- Voltage-Mode PWM Control
• Fast Transient Response
- High-Bandwidth Error Amplifiers
- Full 0% to 100% Duty Ratios
• Excellent Output Voltage Regulation
- Core PWM Output:
±1% Over Temperature
- I/O PWM Output:
±2% Over Temperature
- Other Outputs:
±2.5% Over Temperature
• TTL-Compatible 5-Bit Digital-to-Analog Core Output
Voltage Selection
- Wide Range . . . . . . . . . . . . . . . . . . . 1.8VDC to 3.5VDC
- 0.1V Steps . . . . . . . . . . . . . . . . . . . . 2.1VDC to 3.5VDC
- 0.05V Steps . . . . . . . . . . . . . . . . . . 1.8VDC to 2.05VDC
• Power-Good Output Voltage Monitor
• Microprocessor Core Voltage Protection Against Shorted
MOSFET
• Over-Voltage and Over-Current Fault Monitors
- Does Not Require Extra Current Sensing Element,
Uses MOSFET’s rDS(ON)
• Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator; Programmable from
50kHz to 1MHz
Applications
• Full Motherboard Power Regulation for Computers
• Low-Voltage Distributed Power Supplies
UGATE2
PHASE2
VID4
VID3
FB2
COMP2
SS
FAULT/RT
FB4
VCC
PGND
LGATE1
PHASE1
GATE3
COMP1
GND
VOUT4
VSEN2
UGATE1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PGOOD
VID2
OCSET2
VSEN1
FB3
VID1
VID0
OCSET1
FB1
Ordering Information
PART NUMBER
TEMP. (oC)
PACKAGE
PKG. NO.
HIP6019CB
0 to 70
28 Ld SOIC
M28.3
HIP6019EVAL1
Evaluation Board
Data Sheet
April 1998
File Number
4490.2
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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