ISL6310 Datasheet, PDF (5/27 Pages) Intersil Corporation – Two-Phase Buck PWM Controller with High Current Integrated MOSFET Drivers

ISL6310
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
Supply Voltage, PVCC . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +15V
Absolute Boot Voltage, V_BOOT . . . . . . . . GND - 0.3V to GND + 36V
Phase Voltage, V_PHASE . . . . . . . . GND - 0.3V to 15V (PVCC = 12)
GND - 8V (<400ns, 20µJ) to 24V (<200ns, V_BOOT-PHASE = 12V)
Upper Gate 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
Lower Gate 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
Thermal Information
Thermal Resistance
θ_JA (°C/W) θ_JC (°C/W)
QFN Package (Notes 1, 2) . . . . . . . . . .
35
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 (ISL6310CR, ISL6310CRZ) . . . 0°C to +70°C
Ambient Temperature (ISL6310IR, ISL6310IRZ) . . .-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.
Electrical Specifications
Recommended Operating Conditions, Unless Otherwise Specified. Parameters with MIN and/or MAX limits are
100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are
not production tested.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNITS
BIAS SUPPLY AND INTERNAL OSCILLATOR
Input Bias Supply Current
Gate Drive Bias Current
I_VCC; ENLL = high
I_PVCC; ENLL = high, all gate outputs open,
Fsw = 250kHz
-
15
20
mA
-
1.5
3.0
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
3.75
3.88
4.00
V
Oscillator Ramp Amplitude (Note 3)
Maximum Duty Cycle (Note 3)
V_P-P
-
1.50
-
V
-
66.6
-
%
CONTROL THRESHOLDS
ENLL Rising Threshold
-
0.66
-
V
ENLL Hysteresis
-
100
-
mV
COMP Shutdown Threshold
COMP Falling
0.25
0.35
0.5
V
REFERENCE AND DAC
System Accuracy (DAC = 0.6V, 0.9V)
DROOP connected to IREF
-0.8
-
0.8
%
System Accuracy (DAC = 1.2V, 1.50V)
DROOP connected to IREF
-0.5
-
0.5
%
DAC Input Low Voltage (REF0, REF1)
-
-
0.4
V
DAC Input High Voltage (REF0, REF1)
0.8
-
-
V
External Reference
0.6
-
1.75
V
OFS Sink Current Accuracy (Negative Offset)
OFS Source Current Accuracy (Positive Offset)
R_OFS = 30kΩ from OFS to VCC
R_OFS = 10kΩ from OFS to GND
47.5
50.0
52.5 µA
47.5
50.0
52.5 µA
5
FN9209.4
August 7, 2008