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HIP6311 Datasheet

Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller

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HIP6311
NOT RECOMMENDED FOR NEW DESIGNS
NO RECOMMENDED REPLACEMENT
contact our Technical Support Center at
1-888-INTERSIL or www.intersil.com/tsc
Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
DATASHEET
FN4817
Rev 3.00
December 27, 2004
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
• Pb-Free Available (RoHS Compliant)
Ordering Information
PART NUMBER TEMP. (°C)
PACKAGE
PKG.
DWG. #
HIP6311CB
0 to 70 20 Ld SOIC
M20.3
HIP6311CBZ (Note)
0 to 70 20 Ld SOIC (Pb-free) M20.3
HIP6311CBZA (Note) 0 to 70 20 Ld SOIC (Pb-free) M20.3
HIP6301EVAL1
Evaluation Platform
*Add “-T” suffix to part number for tape and reel packaging.
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
HIP6311 (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 VCC
19 PGOOD
18 PWM4
17 ISEN4
16 ISEN1
15 PWM1
14 PWM2
13 ISEN2
12 ISEN3
11 PWM3
FN4817 Rev 3.00
December 27, 2004
Page 1 of 17


Renesas Electronics Components Datasheet

HIP6311 Datasheet

Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller

No Preview Available !

HIP6311
Block Diagram
PGOOD
VCC
VSEN
COMP
VID0
VID1
VID2
VID3
VID4
FB
X 0.9
X1.15
+
UV
-
+
OVP
-
OV
LATCH
S
+
-
POWER-ON
RESET (POR)
THREE
STATE
CLOCK AND
SAWTOOTH
GENERATOR
+
PWM
-
SOFT-
START
AND FAULT
LOGIC
+
-
+
PWM
-
+
-
+
PWM
-
D/A
+
E/A
-
+
-
+
PWM
-
CURRENT
CORRECTION
PHASE
NUMBER
CHANNEL
DETECTOR
I_TOT
+
OC
-
+
+
+
+
I_TRIP
GND
FS/EN
PWM1
PWM2
PWM3
PWM4
ISEN1
ISEN2
ISEN3
ISEN4
FN4817 Rev 3.00
December 27, 2004
Page 2 of 17


Part Number HIP6311
Description Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Maker Renesas
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HIP6311 Datasheet PDF






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