ISL6752_14 Datasheet, PDF (5/16 Pages) Intersil Corporation – ZVS Full-Bridge Current-Mode PWM with Adjustable Synchronous Rectifier Control

ISL6752
Absolute Maximum Ratings (Note 2)
Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . GND - 0.3V to +20.0V
OUTxxx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VDD
Signal Pins . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to V_REF + 0.3V
VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 6.0V
Peak GATE Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1A
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Supply Voltage Range (Typical). . . . . . . . . . . . . . . . 9VDC to 16VDC
Thermal Information
Thermal Resistance Junction to Ambient (Typical)
θ_JA (°C/W)
16 Ld QSOP (Note 1). . . . . . . . . . . . . . . . . . . . . . . .
100
Maximum Junction Temperature . . . . . . . . . . . . . . .-55°C to +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
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 with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2. All voltages are with respect to GND.
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram” on page 2
and “Typical Application - High Voltage Input Primary Side Control ZVS Full-Bridge Converter” on page 3 and
“Typical Application - High Voltage Input Secondary Side Control ZVS Full-Bridge Converter” on page 4.
9V < VDD < 20V, RTD = 10.0kΩ, CT = 470pF, T_A = -40°C to +105°C, Typical values are at T_A = +25°C;
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
SUPPLY VOLTAGE
Supply Voltage
-
-
20
V
Start-Up Current, I_DD
Operating Current, I_DD
UVLO START Threshold
V_DD = 5.0V
R_LOAD, C_OUT = 0
-
175
400
µA
-
11.0
15.5
mA
8.00
8.75
9.00
V
UVLO STOP Threshold
6.50
7.00
7.50
V
Hysteresis
-
1.75
-
V
REFERENCE VOLTAGE
Overall Accuracy
Long Term Stability
Operational Current (Source)
I_VREF = 0mA to 10mA
T_A = +125°C, 1000 hours (Note 3)
4.850
-
-10
5.000
3
-
5.150
V
-
mV
-
mA
Operational Current (Sink)
5
-
-
mA
Current Limit
VREF = 4.85V
-15
-
-100
mA
CURRENT SENSE
Current Limit Threshold
VERR = VREF
0.97
1.00
1.03
V
CS to OUT Delay
Excl. LEB (Note 3)
-
35
50
ns
Leading Edge Blanking (LEB) Duration
(Note 3)
50
70
100
ns
CS to OUT Delay + LEB
CS Sink Current Device Impedance
Input Bias Current
CS to PWM Comparator Input Offset
PULSE WIDTH MODULATOR
T_A = +25°C
V_CS = 1.1V
V_CS = 0.3V
T_A = +25°C
-
-
130
ns
-
-
20
Ω
-6.00
-
-2.00
µA
65
80
95
mV
VERR Pull-Up Current Source
VERR = 2.50V
0.80
1.00
1.30
mA
VERR VOH
Minimum Duty Cycle
I_LOAD = 0mA
VERR < 0.6V
4.20
-
-
-
-
V
0
%
5
FN9181.3
October 31, 2008