ISL6754 Datasheet, PDF (6/19 Pages) Intersil Corporation – ZVS Full-Bridge PWM Controller with Adjustable Synchronous Rectifier Control

ISL6754
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram” on page 2
and “Typical Application schematics” beginning on page 3. 9V < V_DD < 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. (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
RAMP
RAMP Sink Current Device Impedance
RAMP to PWM Comparator Offset
Bias Current
PULSE WIDTH MODULATOR
V_RAMP = 1.1V
T_A = +25°C
V_RAMP = 0.3V
-
-
20
Ω
65
80
95
mV
-5.0
-
-2.0
μA
Minimum Duty Cycle
VERR < 0.6V
-
-
0
%
Maximum Duty Cycle (per half-cycle)
VERR = 4.20V, V_CS = 0V (Note 5)
RTD = 2.00kΩ, CT = 220pF
-
94
-
%
-
97
-
%
RTD = 2.00kΩ, 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
T_A = +25°C
0.7
0.8
0.9
V
0.31
0.33
0.35
V/V
Common Mode (CM) Input Range
(Note 4)
0
-
4.45
V
ERROR AMPLIFIER
Input Common Mode (CM) Range
GBWP
(Note 4)
(Note 4)
0
-
V_REF
V
5
-
-
MHz
VERR VOL
VERR VOH
VERR Pull-Up Current Source
I_LOAD = 2mA
I_LOAD = 0mA
VERR = 2.5V
-
-
4.20
-
0.8
1.0
0.4
V
-
V
1.3
mA
EA Reference
EA Reference + EA Input Offset Voltage
T_A = +25°C
0.594
0.600
0.606
V
0.590
0.600
0.612
V
OSCILLATOR
Frequency Accuracy, Overall
(Note 4)
165
183
201
kHz
-10
-
10
%
Frequency Variation with V_DD
Temperature Stability
Charge Current
Discharge Current Gain
T_A = +25°C, (F_20V- - F_10V)/F_10V
V_DD = 10V, |F_-40°C - F_0°C|/F_0°C
|F_0°C - F_105°C|/F_25°C (Note 4)
T_A = +25°C
-
-
-
-193
19
0.3
4.5
1.5
-200
20
1.7
-
-
-207
23
%
%
%
µA
µA/µA
CT Valley Voltage
Static Threshold
0.75
0.80
0.88
V
CT Peak Voltage
Static Threshold
2.75
2.80
2.88
V
CT Pk-Pk Voltage
Static Value
1.92
2.00
2.05
V
RTD Voltage
1.97
2.00
2.03
V
RESDEL Voltage Range
0
-
2.00
V
CTBUF Gain (V_CTBUFP-P/V_CTP-P)
CTBUF Offset from GND
CTBUF VOH
CTBUF VOL
V_CT = 0.8V, 2.6V
V_CT = 0.8V
ΔV(I_LOAD = 0mA, I_LOAD = -2mA), V_CT = 2.6V
ΔV(I_LOAD = 2mA, I_LOAD = 0mA), V_CT = 0.8V
1.95
0.34
-
-
2.0
0.40
-
-
2.05
V/V
0.44
V
0.10
V
0.10
V
6
FN6754.1
September 29, 2008