HIP6018B_05 Datasheet, PDF (1/15 Pages) Intersil Corporation – Advanced PWM and Dual Linear Power Control

®
Data Sheet
April 1, 2005
HIP6018B
FN4586.3
Advanced PWM and Dual Linear Power
Control
The HIP6018B 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 HIP6018B 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 HIP6018B 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
HIP6018B
(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
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 . . . . . . . . . . . . . . . . . . . 1.3V_DC to 3.5V_DC
- 0.1V Steps . . . . . . . . . . . . . . . . . . . . 2.1V_DC to 3.5V_DC
- 0.05V Steps . . . . . . . . . . . . . . . . . . 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
• Pb-Free Available (RoHS Compliant)
Applications
• _{Full Motherboard Power Regulation for Computers}
• _{Low-Voltage Distributed Power Supplies}
Ordering Information
TEMP.
PART NUMBER RANGE (^oC)
PACKAGE
PKG.
DWG. #
HIP6018BCB*
0 to 70 24 Ld SOIC
M24.3
HIP6018BCBZ* (Note) 0 to 70 24 Ld SOIC (Pb-free) M24.3
* Add “-T” suffix for tape and reel.
NOTE: Intersil Pb-free 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-020.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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