HIP6018 Datasheet, PDF (1/14 Pages) Intersil Corporation – Advanced PWM and Dual Linear Power Control

Data Sheet
HIP6018
April 1998 File Number 4497.1
Advanced PWM and Dual Linear Power
Control
The HIP6018 provides the power control and protection for
three output voltages in high-performance microprocessor
and computer applications. The IC integrates a PWM
controllers, a linear regulator and a linear controller as well
as the monitoring and protection functions into a single
package. The PWM controller regulates the microprocessor
core voltage with a synchronous-rectified buck converter.
The linear controller regulates power for the GTL bus and
the linear regulator provides power for the clock driver circuit.
The HIP6018 includes an Intel-compatible, TTL 5-input
digital-to-analog converter (DAC) that adjusts the core PWM
output voltage from 2.1V_DC to 3.5V_DC in 0.1V increments
and from 1.8V_DC to 2.05V_DC in 0.05V steps. The precision
reference and voltage-mode control provide ±1% static
regulation. The linear regulator uses an internal pass device
to provide 2.5V±2.5%. The linear controller drives an
external N-channel MOSFET to provide 1.5V±2.5%.
The HIP6018 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 over-
current function monitors the output current by using the
voltage drop across the upper MOSFET’s r_DS(ON),
eliminating the need for a current sensing resistor.
Ordering Information
TEMP. RANGE
PART NUMBER
(^oC)
PACKAGE
HIP6018CB
0 to 70
24 Ld SOIC
HIP6018EVAL1 Evaluation Board
PKG.
NO.
M24.3
Features
• Provides 3 Regulated Voltages
- Microprocessor Core, Clock and GTL Power
• Drives N-Channel MOSFETs
• Operates from +3.3V, +5V and +12V Inputs
• Simple Single-Loop PWM Control Design
- Voltage-Mode Control
• Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratios
• Excellent Output Voltage Regulation
- Core PWM Output: ±1% Over Temperature
- Other Outputs: ±2.5% Over Temperature
• TTL-compatible 5-Bit Digital-to-Analog Core Output
Voltage Selection
- Wide Range . . . . . . . . . . . . . . . . . . . 1.8V_DC to 3.5V_DC
- 0.1V Steps . . . . . . . . . . . . . . . . . . . . 2.1V_DC to 3.5V_DC
- 0.05V Steps . . . . . . . . . . . . . . . . . . 1.8V_DC to 2.05V_DC
• 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 r_DS(ON)
• Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator; Programmable from
50kHz to over 1MHz
Applications
• _{Full Motherboard Power Regulation for Computers}
• _{Low-Voltage Distributed Power Supplies}
Pinout
HIP6018 (SOIC)
TOP VIEW
VCC 1
VID4 2
VID3 3
VID2 4
VID1 5
VID0 6
PGOOD 7
FAULT 8
SS 9
RT 10
FB2 11
VIN2 12
24 UGATE1
23 PHASE1
22 LGATE1
21 PGND
20 OCSET1
19 VSEN1
18 FB1
17 COMP1
16 FB3
15 DRIVE3
14 GND
13 VOUT2
2-224
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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