ISL6745A_14 Datasheet, PDF (4/9 Pages) Intersil Corporation – Improved Bridge Controller with Precision Dead Time Control

ISL6745A
Absolute Maximum Ratings
Supply Voltage, V_DD . . . . . . . . . . . . . . . . . . . GND - 0.3V to +20.0V
OUTA, OUTB . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to V_DD
Signal Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 5V
Peak GATE Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Supply Voltage Range (Typical). . . . . . . . . . . . . . . . . . . . 9V to 16V
Thermal Information
Thermal Resistance (Typical, Note 1)
θ_JA (°C/W)
10 Lead MSOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
155
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 to be measured with respect to GND, unless otherwise specified.
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram on page 2 and Typical
Application schematic on page 3. 9V < V_DD < 16V, R_TD = 51.1kΩ, C_T = 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
Start-Up Current, I_DD
Operating Current, I_DD
UVLO START Threshold
V_DD< START Threshold
C_OUTA,B = 1nF
-
-
175
µA
-
5
8.5
mA
5.9
6.3
6.6
V
UVLO STOP Threshold
5.3
5.7
6.3
V
Hysteresis
-
0.6
-
V
CURRENT SENSE
Current Limit Threshold
0.55
0.6
0.65
V
CS to OUT Delay
(Note 3)
-
35
-
ns
CS Sink Current
8
10
-
mA
Input Bias Current
-1
-
1
µA
PULSE WIDTH MODULATOR
Minimum Duty Cycle
Maximum Duty Cycle
V_ERR to PWM Comparator Input Gain
C_T to PWM Comparator Input Gain
SS to PWM Comparator Input Gain
V_ERROR < C_T Offset
-
-
0
%
C_T = 470pF, R_TD = 51.1kΩ
-
94
-
%
C_T = 470pF, R_TD = 1.1kΩ (Note 3)
-
99
-
%
-
0.8
-
V/V
(Note 3)
-
1
-
V/V
(Note 3)
-
0.8
-
V/V
OSCILLATOR
Charge Current
R_TD Voltage
Discharge Current Gain
T_A = +25°C
143
156
170
µA
1.925
2
2.075
V
45
-
65
µA/µA
C_T Valley Voltage
C_T Peak Voltage
0.75
0.8
0.85
V
2.70
2.80
2.90
V
4
FN6703.1
September 11, 2008