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HIP6311 Datasheet(PDF) 1 Page - Intersil Corporation

Part No. HIP6311
Description  Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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HIP6311 Datasheet(HTML) 1 Page - Intersil Corporation

 
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File Number
4817
HIP6311
Microprocessor CORE Voltage Regulator
Multi-Phase Buck PWM Controller
The HIP6311 multi-phase PWM control IC together with its
companion gate drivers, the HIP6601, HIP6602 or HIP6603
and internal MOSFETs provides a precision voltage
regulation system for advanced microprocessors.
Multiphase power conversion is a marked departure from
earlier single phase converter configurations previously
employed to satisfy the ever increasing current demands of
modern microprocessors. Multi-phase convertors, by
distributing the power and load current results in smaller and
lower cost transistors with fewer input and output capacitors.
These reductions accrue from the higher effective
conversion frequency with higher frequency ripple current
due to the phase interleaving process of this topology. For
example, a three phase convertor operating at 350kHz will
have a ripple frequency of 1.05MHz. Moreover, greater
convertor bandwidth of this design results in faster response
to load transients.
Outstanding features of this controller IC include
programmable VID codes from the microprocessor that
range from 1.100V to 1.850V with a system accuracy of
±0.8%. Pull up currents on these VID pins eliminates the
need for external pull up resistors. In addition “droop”
compensation, used to reduce the overshoot or undershoot
of the CORE voltage, is easily programmed with a single
resistor.
Another feature of this controller IC is the PGOOD monitor
circuit which is held low until the CORE voltage increases,
during its Soft-Start sequence, to within 10% of the
programmed voltage. Over-voltage, 15% above programmed
CORE voltage, results in the converter shutting down and
turning the lower MOSFETs ON to clamp and protect the
microprocessor. Under voltage is also detected and results
in PGOOD low if the CORE voltage falls 10% below the
programmed level. Over-current protection reduces the
regulator current to less than 25% of the programmed trip
value. These features provide monitoring and protection for
the microprocessor and power system.
Features
• Multi-Phase Power Conversion
• Precision Channel Current Sharing
- Loss Less Current Sampling - Uses rDS(ON)
• Precision CORE Voltage Regulation
-
±0.8% System Accuracy Over Temperature
• Microprocessor Voltage Identification Input
- 5-Bit VID Input
- 1.100V to 1.850V in 25mV Steps
- Programmable “Droop” Voltage
• Fast Transient Recovery Time
• Over Current Protection
• Automatic Selection of 2, 3, or 4 Phase Operation
• High Ripple Frequency, (Channel Frequency) Times
Number Channels . . . . . . . . . . . . . . . . . 100kHz to 6MHz
Pinout
HIP6311 (SOIC)
TOP VIEW
Ordering Information
PART NUMBER
TEMP. (oC)
PACKAGE
PKG. NO.
HIP6311CB
0 to 70
20 Ld SOIC
M20.3
HIP6311CB-T
20 Ld SOIC Tape and Reel
HIP6301EVAL1
Evaluation Platform
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
VID4
VID3
VID2
VID1
VID0
FS/DIS
PWM2
PGOOD
PWM3
ISEN4
ISEN1
VCC
GND
ISEN3
FB
PWM4
VSEN
COMP
PWM1
ISEN2
Data Sheet
February 2000
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Copyright
© Intersil Corporation 2000


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