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HIP6311A Datasheet

Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller

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HIP6311A
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
FN9035
Rev 1.00
July 2004
The HIP6311A Multi-Phase Buck PWM control IC together
with HIP6601A, HIP6602A or HIP6603A companion gate
drivers form a precision voltage regulation system for
advanced microprocessors. The HIP6311A controls
microprocessor core voltage regulation by driving 2 to 4
synchronous-rectified buck channels in parallel. The multi-
phase buck topology takes advantage of interleaving phases
to increase ripple frequency and reduce input and output
ripple currents. Resulting in fewer components, reduced
component ratings, lower power dissipation, and smaller
implementation area.
The HIP6311A control IC features a 5 bit digital-to-analog
converter (DAC) that adjusts the core output voltage from
1.100V to 1.850V with an unsurpassed system accuracy of
±0.5% over temperature. The HIP6311A uses a lossless
current sensing approach in which the voltage developed
across the on-resistance of the lower MOSFETs during
conduction is sampled. Current sensing provides the
required signals for precision droop, channel-current
balancing, load sharing, and over-current protection.
Another feature of this control IC is the PGOOD monitor
which is held low until the core voltage increases to within
8% of the programmed voltage. An over-voltage condition is
detected when the output voltage exceeds 115% of the
programmed VID. This results in the converter shutting down
and PGOOD being pulled low. During an under-voltage
condition (output voltage 10% below the programmed VID),
PGOOD transitions low, but the converter continues to
operate.
Ordering Information
PART NUMBER TEMP. (oC) PACKAGE PKG. NO.
HIP6311ACB
0 to 70 20 Ld SOIC M20.3
HIP6311ACBZ
(See Note)
0 to 70
20 Ld SOIC
(Pb-free)
M20.3
HIP6311ACBZA
(See Note)
0 to 70
20 Ld SOIC
(Pb-free)
M20.3
*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 is 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-020B.
Features
• Precision CORE Voltage Regulation
- ±0.5% System Accuracy Over Temperature
• Microprocessor Voltage Identification Input
- 5-Bit VID Input
- 1.100V to 1.850V in 25mV Steps
- Programmable Droop Voltage
• RDS(on) Current Sensing
- Accurate Channel Current Balancing
- Loss less Current Sampling
- Low-Cost Implementation
• Fast Transient Response
• Digital Soft Start
• Over Current Protection
• Selection of 2, 3, or 4 Phase Operation
• 50kHz to 1.5MHz Switching Frequency
Pb-free available
Applications
• Desktop Motherboards
• Voltage Regulator Modules
• Servers and Workstations
Pinout
HIP6311A (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
FN9035 Rev 1.00
July 2004
Page 1 of 16


Renesas Electronics Components Datasheet

HIP6311A Datasheet

Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller

No Preview Available !

HIP6311A
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
FN9035 Rev 1.00
July 2004
Page 2 of 16


Part Number HIP6311A
Description Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Maker Renesas
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HIP6311A Datasheet PDF






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