®
HIP6301
Data Sheet
December 27, 2004
FN4765.6
Microprocessor CORE Voltage Regulator
Multi-Phase Buck PWM Controller
The HIP6301 multi-phase PWM control IC together with its
companion gate drivers, the HIP6601B, HIP6602B,
HIP6603B or HIP6604B and external 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
±1%.
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. Overvoltage, 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. Overcurrent 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 r
DS(ON)
• Precision CORE Voltage Regulation
-
±1%
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
•
Pb-Free Available (RoHS Compliant)
Ordering Information
PART NUMBER
HIP6301CB
HIP6301CBZ
(Note)
HIP6301CB-T
HIP6301CBZ-T
(Note)
HIP6301CBZA-T
(Note)
HIP6301EVAL2
TEMP. (°C)
0 to 70
0 to 70
PACKAGE
20 Ld SOIC
20 Ld SOIC
(Pb-free)
PKG. DWG #
M20.3
M20.3
20 Ld SOIC Tape and Reel
20 Ld SOIC Tape and Reel
(Pb-free)
20 Ld SOIC Tape and Reel
(Pb-free)
Evaluation Platform
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.
Pinout
HIP6301 (SOIC)
TOP VIEW
VID4 1
VID3 2
VID2 3
VID1 4
VID0 5
COMP 6
FB 7
FS/DIS 8
GND 9
VSEN 10
20 V
CC
19 PGOOD
18 PWM4
17 ISEN4
16 ISEN1
15 PWM1
14 PWM2
13 ISEN2
12 ISEN3
11 PWM3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2000, 2002, 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
HIP6301
Simplified Power System Diagram
VSEN
PWM 1
SYNCHRONOUS
RECTIFIED BUCK
CHANNEL
PWM 2
SYNCHRONOUS
RECTIFIED BUCK
CHANNEL
MICROPROCESSOR
HIP6301
PWM 3
PWM 4
SYNCHRONOUS
RECTIFIED BUCK
CHANNEL
VID
SYNCHRONOUS
RECTIFIED BUCK
CHANNEL
Functional Pin Description
VID4 1
VID3 2
VID2 3
VID1 4
VID0 5
COMP 6
FB 7
FS/DIS 8
GND 9
VSEN 10
20 V
CC
19 PGOOD
18 PWM4
17 ISEN4
16 ISEN1
15 PWM1
14 PWM2
13 ISEN2
12 ISEN3
11 PWM3
converter. Pulling this pin to ground disables the converter
and three states the PWM outputs. See Figure 10.
GND (Pin 9)
Bias and reference ground. All signals are referenced to this
pin.
VSEN (Pin 10)
Power good monitor input. Connect to the microprocessor-
CORE voltage.
PWM1 (Pin 15), PWM2 (Pin 14), PWM3 (Pin 11) and
PWM4 (Pin 18)
PWM outputs for each driven channel in use. Connect these
pins to the PWM input of a HIP6601B/2B/3B/4B driver. For
systems which use 3 channels, connect PWM4 high. Two
channel systems connect PWM3 and PWM4 high.
VID4 (Pin 1), VID3 (Pin 2), VID2 (Pin 3), VID1 (Pin 4)
and VID0 (Pin 5)
Voltage Identification inputs from microprocessor. These pins
respond to TTL and 3.3V logic signals. The HIP6301 decodes
VID bits to establish the output voltage. See Table 1.
ISEN1 (Pin 16), ISEN2 (Pin 13), ISEN3 (Pin 12) and
ISEN4 (Pin 17)
Current sense inputs from the individual converter channel’s
phase nodes. Unused sense lines MUST be left open.
COMP (Pin 6)
Output of the internal error amplifier. Connect this pin to the
external feedback and compensation network.
PGOOD (Pin 19)
Power good. This pin is an open-drain logic signal that
indicates when the microprocessor CORE voltage (VSEN
pin) is within specified limits and Soft-Start has timed out.
FB (Pin 7)
Inverting input of the internal error amplifier.
FS/DIS (Pin 8)
Channel frequency, F
SW
, select and disable. A resistor from
this pin to ground sets the switching frequency of the
V
CC
(Pin 20)
Bias supply. Connect this pin to a 5V supply.
3
FN4765.6
December 27, 2004
51单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
