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| ISL78223 Datasheet, PDF (8/20 Pages) Intersil Corporation – ZVS Full-Bridge PWM Controller with Adjustable Synchronous Rectifier Control | |||
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ISL78223
Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to âFunctional Block Diagramâ on page 2
and âTypical Applicationâ schematics beginning on page 3. 9V < VDD < 20V, RTD = 10.0kâ¦, CT = 470pF, TA = -40°C to +105°C, Typical values are at
TA = +25°C. Boldface limits apply over the operating temperature range, -40°C to +105°C. (Continued)
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 11)
TYP
(Note 11) UNITS
RAMP
RAMP Sink Current Device Impedance
RAMP to PWM Comparator Offset
Bias Current (sinking)
PULSE WIDTH MODULATOR
VRAMP = 1.1V
TA = +25°C (Note 7)
VRAMP = 0.3V
-
-
20
â¦
65
80
95
mV
2
-
5
μA
Minimum Duty Cycle
VERR < 0.6V (Note 7)
-
-
0
%
Maximum Duty Cycle (Per Half-cycle)
VERR = 4.20V, VCS = 0V (Note 8)
RTD = 2.00kâ¦, CT = 220pF
-
94
-
%
-
97
-
%
RTD = 2.00kâ¦, CT = 470pF
-
99
-
%
Zero Duty Cycle VERR Voltage
0.85
-
1.20
V
VERR to PWM Comparator Input Offset
VERR to PWM Comparator Input Gain
TA = +25°C
0.7
0.31
0.8
0.33
0.9
V
0.35
V/V
Common Mode (CM) Input Range
(Note 7)
0
-
4.45
V
ERROR AMPLIFIER
Input Common Mode (CM) Range
GBWP
(Note 7)
(Note 7)
0
-
VREF
V
5
-
-
MHz
VERR VOL
VERR VOH
VERR Pull-Up Current Source (Sinking)
ILOAD_sink = 2mA
ILOAD = 0mA
VERR = 2.5V
0.2
0.4
V
3.8
4.5
-
V
0.8
1.0
1.3
mA
EA Reference
EA Reference + EA Input Offset Voltage
TA = +25°C (Note 7)
0.594
0.600
0.606
V
0.590
0.600
0.612
V
OSCILLATOR
Frequency Accuracy, Overall
(Note 7)
165
183
201
kHz
-10
-
10
%
Frequency Variation with VDD
Temperature Stability
TA = +25°C, (F20V- - F10V)/F10V
VDD = 10V, |F-40°C - F0°C|/F0°C
|F0°C - F105°C|/F25°C (Note 7)
-
0.3
1.7
%
-
4.5
-
%
-
1.5
-
%
Charge Current (Sourcing)
Discharge Current Gain
TA = +25°C
184
200
215
µA
17
21
24
µA/µA
CT Valley Voltage
Static Threshold
0.75
0.80
0.88
V
CT Peak Voltage
Static Threshold
2.73
2.80
2.88
V
CT Pk-Pk Voltage
Static Value
1.92
2.00
2.05
V
RTD Voltage
1.94
2.00
2.07
V
RESDEL Voltage Range
0
-
2.00
V
CTBUF Gain (VCTBUFP-P/VCTP-P)
CTBUF Offset from GND
CTBUF VOH
CTBUF VOL
VCT = 0.8V, 2.6V
VCT = 0.8V
ÎV(ILOAD = 0mA, ILOAD = 2mA), VCT = 2.6V
ÎV(ILOAD = 2mA, ILOAD = 0mA), VCT = 0.8V
1.95
0.34
-
-
2.0
0.40
-
-
2.05
V/V
0.45
V
0.10
V
0.10
V
8
FN7936.1
January 2, 2013
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