ISL6312 Datasheet, PDF (6/35 Pages) Intersil Corporation – Four-Phase Buck PWM Controller with Integrated MOSFET Drivers for Intel VR10,VR11, and AMD Applications

ISL6312
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 3, 4) . . . . . . . . . .
32
3.5
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 (ISL6312CRZ) . . . . . . . . . . . . . 0°C to +70°C
Ambient Temperature (ISL6312IRZ) . . . . . . . . . . . . .-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:
3. 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.
4. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Recommended Operating Conditions, Unless Otherwise Specified.
PARAMETER
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
PVCC POR (Power-On Reset) Threshold
PWM MODULATOR
Oscillator Frequency Accuracy, f_SW
Adjustment Range of Switching Frequency
Oscillator Ramp Amplitude, V_PP
CONTROL THRESHOLDS
EN Rising Threshold
EN Hysteresis
EN_PH4 Rising Threshold
EN_PH4 Falling Threshold
COMP Shutdown Threshold
REFERENCE AND DAC
System Accuracy (1.000V - 1.600V)
System Accuracy (0.600V - 1.000V)
System Accuracy (0.375V - 0.600V)
DAC Input Low Voltage (VR10, VR11)
DAC Input High Voltage (VR10, VR11)
TEST CONDITIONS
I_VCC; EN = high
I_{PVCC1_2}; EN = high
I_PVCC3; EN = high
VCC rising
VCC falling
PVCC rising
PVCC falling
R_T = 100kΩ (± 0.1%)
(Note 5)
(Note 5)
COMP falling
MIN
MAX
(Note 6) TYP (Note 6) 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
-
-1.0
-
-2.0
-
-
-
0.8
-
0.5
%
1.0
%
2.0
%
0.4
V
-
V
6
FN9289.5
February 25, 2010