HIP6017B Datasheet, PDF (1/16 Pages) Intersil Corporation – Advanced PWM and Dual Linear Power Control

PRELIMINARY
Data Sheet
HIP6017B
March 1999
File Number 4585
Advanced PWM and Dual Linear Power
Control
The HIP6017B provides the power control and protection for
three output voltages in high-performance microprocessor
and computer applications. The IC integrates a PWM
controller, a linear regulator and a linear controller as well as
the monitoring and protection functions into a single 28 lead
SOIC 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 circuits.
The HIP6017B 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 1.3VDC to 2.05VDC 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 HIP6017B 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.
Pinout
HIP6017B (SOIC)
TOP VIEW
NC 1
NC 2
VID4 3
VID3 4
VID2 5
VID1 6
VID0 7
PGOOD 8
GND2 9
V33 10
NC 11
SS 12
FAULT/RT 13
FB2 14
28 VCC
27 UGATE1
26 PHASE1
25 LGATE1
24 PGND
23 OCSET1
22 VSEN1
21 FB1
20 COMP1
19 FB3
18 DRIVE3
17 GND
16 VOUT2
15 VIN2
Features
• Provides 3 Regulated Voltages
- Microprocessor Core, Clock and GTL Power
• Linear Controller Drives Either N-Channel MOSFETs or
Bipolar Transistors
• 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 - 1.3V_DC to 3.5V_DC
- 0.1V Steps from 2.1V_DC to 3.5V_DC
- 0.05V Steps from 1.3V_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}
Ordering Information
TEMP.
PART NUMBER RANGE (^oC)
PACKAGE
PKG.
NO.
HIP6017BCB
0 to 70 28 Ld SOIC
M28.3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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