ISL6324A Datasheet, PDF (6/39 Pages) Intersil Corporation – Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors

ISL6324A
Absolute Maximum Ratings
Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.2V
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) . . . . . . . . . .
27
2
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
ISL6324ACRZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
ISL6324AIRZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-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 (0°C to +70°C), Unless Otherwise Specified.
PARAMETER
TEST CONDITIONS
MIN
(Note 4) TYP
BIAS SUPPLIES
Input Bias Supply Current
Gate Drive Bias Current - PVCC1_2 Pin
Gate Drive Bias Current - PVCC_NB Pin
VCC POR (Power-On Reset) Threshold
I_VCC; EN = high
I_{PVCC1_2}; EN = high
I_{PVCC_NB}; EN = high
VCC Rising
15
22
1
1.8
0.3
0.9
4.20
4.35
VCC Falling
3.70
3.85
PVCC POR (Power-On Reset) Threshold
PVCC Rising
4.20
4.35
PVCC Falling
3.70
3.85
PWM MODULATOR
Oscillator Frequency Accuracy, f_SW
R_T = 100kΩ (±0.1%) to Ground, (All Temps)
(Droop Enabled)
225
250
R_T = 100kΩ (±0.1%) to VCC, T_A = 0°C to +70°C
245
275
(Droop Disabled)
R_T = 100kΩ (±0.1%) to VCC, T_A = -40°C to +85°C
240
275
(Droop Disabled)
Typical Adjustment Range of Switching
(Note 3)
0.08
Frequency
Oscillator Ramp Amplitude, V_P-P
Maximum Duty Cycle
(Note 3)
(Note 3)
1.50
99.5
CONTROL THRESHOLDS
EN Rising Threshold
0.80
0.88
EN Hysteresis
70
130
PWROK Input HIGH Threshold
1.1
PWROK Input LOW Threshold
0.95
VDDPWRGD Sink Current
Open drain, V_VDDPWRGD = 400mV
PWM Channel Disable Threshold
V_ISEN3-, V_ISEN4-, V_ISEN2-
4.4
REFERENCE AND DAC
System Accuracy (VDAC > 1.000V)
-0.6
MAX
(Note 4) UNITS
25
mA
3
mA
2
mA
4.50
V
4.05
V
4.50
V
4.05
V
265
kHz
310
kHz
310
kHz
1.0
MHz
V
%
0.92
V
190
mV
V
V
4
mA
V
0.6
%
6
FN6880.1
April 29, 2010