ISL6312A_15 Datasheet, PDF (7/36 Pages) Intersil Corporation – Four-Phase Buck PWM Controller with Integrated MOSFET Drivers for Intel VR10,VR11, and AMD Applications

ISL6312A
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
_JA (°C/W) _JC (°C/W)
QFN Package (Notes 4, 5) . . . . . . . . . .
27
2
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Recommended Operating Conditions
VCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+5V ±5%
PVCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . +5V to 12V ±5%
Ambient Temperature
(ISL6312ACRZ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
(ISL6312AIRZ) . . . . . . . . . . . . . . . . . . . . . . . . . . . .-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:
4. _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.
5. For _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
TEST CONDITIONS
MIN
(Note 7)
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
I_VCC; EN = high
I_{PVCC1_2}; EN = high
I_PVCC3; EN = high
V_CC rising
V_CC falling
PVCC rising
15
2
1
4.25
3.75
4.25
PVCC falling
3.60
PWM MODULATOR
Oscillator Frequency Accuracy, f_SW
R_T = 100k(±0.1%)
225
Adjustment Range of Switching Frequency
(Note 6)
0.08
Oscillator Ramp Amplitude, V_PP
(Note 6)
-
CONTROL THRESHOLDS
EN Rising Threshold
0.81
EN Hysteresis
80
EN_PH4 Rising Threshold
1.160
EN_PH4 Falling Threshold
1.00
COMP Shutdown Threshold
COMP falling
0.1
REFERENCE AND DAC
System Accuracy (1.000V to 1.600V)
-0.5
System Accuracy (0.600V to 1.000V)
-1.0
System Accuracy (0.375V - 0.600V)
-2.0
DAC Input Low Voltage (VR10, VR11)
-
DAC Input High Voltage (VR10, VR11)
0.8
DAC Input Low Voltage (AMD)
-
DAC Input High Voltage (AMD)
1.0
TYP
20
4.3
2.1
4.38
3.88
4.38
3.88
250
-
1.50
0.85
110
1.210
1.06
0.2
-
-
-
-
-
-
-
MAX
(Note 7) UNITS
25
mA
6
mA
3
mA
4.50
V
4.00
V
4.50
V
4.00
V
275
kHz
1.0 MHz
-
V
0.91
V
140
mV
1.250
V
1.10
V
0.3
V
0.5
%
1.0
%
2.0
%
0.4
V
-
V
0.6
V
-
V
7
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FN9290.6
January 22, 2015