ISL6322_14 Datasheet, PDF (7/41 Pages) Intersil Corporation – Four-Phase Buck PWM Controller with Integrated MOSFET Drivers and I2C Interface for Intel VR10, VR11, and AMD Applications

ISL6322
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
Supply Voltage, PVCC . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +15V
BOOT Voltage, V_BOOT . . . . . . . . . . . . . . GND - 0.3V to GND + 36V
BOOT to PHASE Voltage, V_{BOOT - PHASE} . . . . . -0.3V to 15V (DC)
-0.3V to 16V (<10ns, 10µJ)
PHASE Voltage, V_PHASE . . . . . . . GND - 0.3V to 15V (PVCC = 12)
GND - 8V (<400ns, 20µJ) to 24V (<200ns, V_{BOOT - PHASE} = 12V)
UGATE Voltage, V_UGATE. . . . . . . . V_PHASE - 0.3V to V_BOOT + 0.3V
V_PHASE - 3.5V (<100ns Pulse Width, 2µJ) to V_BOOT + 0.3V
LGATE Voltage, V_LGATE . . . . . . . . . . . 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
Thermal Information
Thermal Resistance
θ_JA (°C/W) θ_JC (°C/W)
QFN Package (Notes 1, 2) . . . . . . . . . .
27
2.5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
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 θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
3. Limits established by characterization and are not production tested.
Electrical Specifications Recommended Operating Conditions, Unless Otherwise Specified.
PARAMETER
TEST CONDITIONS
BIAS SUPPLIES
Input Bias Supply Current
Gate Drive Bias Current - PVCC1_2 Pin
Gate Drive Bias Current - PVCC3 Pin
VCC POR (Power-On Reset) Threshold
I_VCC; EN = high
I_{PVCC1_2}; EN = high
I_PVCC3; EN = high
VCC rising
VCC falling
PVCC POR (Power-On Reset) Threshold
PVCC rising
PVCC falling
PWM MODULATOR
Oscillator Frequency Accuracy, f_SW
Adjustment Range of Switching Frequency
R_T = 100kΩ (±0.1%)
(Note 3)
Oscillator Ramp Amplitude, V_PP
CONTROL THRESHOLDS
(Note 3)
EN Rising Threshold
EN Hysteresis
EN_PH4 Rising Threshold
EN_PH4 Falling Threshold
COMP Shutdown Threshold
COMP falling
REFERENCE AND DAC
System Accuracy (1.000V to 1.600V)
System Accuracy (0.600V to 1.000V)
System Accuracy (0.375V - 0.600V)
DAC Input Low Voltage (VR10, VR11)
DAC Input High Voltage (VR10, VR11)
MIN
TYP
MAX UNITS
15
20
25
mA
2
4.3
6
mA
1
2.1
3
mA
4.25
4.38
4.50
V
3.75
3.88
4.00
V
4.25
4.38
4.50
V
3.60
3.88
4.00
V
225
250
275 kHz
0.08
1.0 MHz
1.50
V
0.85
V
110
mV
1.160 1.210 1.250 V
1.00
1.06
1.10
V
0.1
0.2
0.3
V
-0.5
0.5
%
-1.0
1.0
%
-2.0
2.0
%
0.4
V
0.8
V
7
FN6328.2
August 2, 2007