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ISL6322 Datasheet(PDF) 7 Page - Intersil Corporation

Part No. ISL6322
Description  Four-Phase Buck PWM Controller with Integrated MOSFET Drivers and I2C Interface for Intel VR10, VR11, and AMD Applications
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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ISL6322 Datasheet(HTML) 7 Page - Intersil Corporation

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7
FN6328.0
August 21, 2006
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
Supply Voltage, PVCC . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +15V
Absolute Boot Voltage, VBOOT . . . . . . . . GND - 0.3V to GND + 36V
Phase Voltage, VPHASE . . . . . . . . GND - 0.3V to 15V (PVCC = 12)
GND - 8V (<400ns, 20µJ) to 24V (<200ns, VBOOT-PHASE = 12V)
Upper Gate Voltage, VUGATE . . . . VPHASE - 0.3V to VBOOT + 0.3V
VPHASE - 3.5V (<100ns Pulse Width, 2µJ) to VBOOT + 0.3V
Lower Gate Voltage, VLGATE. . . . . . . . GND - 0.3V to PVCC + 0.3V
GND - 5V (<100ns Pulse Width, 2µJ) to PVCC+ 0.3V
Input, Output, or I/O Voltage . . . . . . . . . GND - 0.3V to VCC + 0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . Class I JEDEC STD
Recommended Operating Conditions
VCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V
±5%
PVCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . +5V to 12V
±5%
Ambient Temperature (ISL6322CRZ) . . . . . . . . . . . . . 0°C to +70°C
Ambient Temperature (ISL6322IRZ) . . . . . . . . . . . . .-40°C to +85°C
Thermal Information
Thermal Resistance
θJA (°C/W) θJC (°C/W)
QFN Package (Notes 1, 2) . . . . . . . . . .
27
2.5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . . -65°C to +150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . +300°C
CAUTION: Stress above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational section of this specification is not implied.
NOTES:
1.
θ
JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For
θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
3. Parameter magnitude guaranteed by design. Not 100% tested.
Electrical Specifications
Recommended Operating Conditions, Unless Otherwise Specified.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
BIAS SUPPLIES
Input Bias Supply Current
IVCC; ENLL = high
15
20
25
mA
Gate Drive Bias Current - PVCC1_2 Pin
IPVCC1_2; ENLL = high
2
4.3
6
mA
Gate Drive Bias Current - PVCC3 Pin
IPVCC3; ENLL = high
1
2.1
3
mA
VCC POR (Power-On Reset) Threshold
VCC rising
4.25
4.38
4.50
V
VCC falling
3.75
3.88
4.00
V
PVCC POR (Power-On Reset) Threshold
PVCC rising
4.25
4.38
4.50
V
PVCC falling
3.60
3.88
4.00
V
PWM MODULATOR
Oscillator Frequency Accuracy, FSW
RT = 100kΩ (± 0.1%)
225
250
275
kHz
Adjustment Range of Switching Frequency
(Note 3)
0.08
1.0
MHz
Oscillator Ramp Amplitude, VPP
(Note 3)
1.50
V
Maximum Duty Cycle (Note 3)
(Note 3)
99.5
%
CONTROL THRESHOLDS
ENLL Rising Threshold
0.85
V
ENLL Hysteresis
110
mV
EN_PH4 Rising Threshold
1.160
1.210
1.250
V
EN_PH4 Falling Threshold
1.00
1.06
1.10
V
COMP Shutdown Threshold
COMP falling
0.1
0.2
0.3
V
ISL6322
ISL6322


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