ISL6551 Datasheet, PDF (6/26 Pages) Intersil Corporation – ZVS Full Bridge PWM Controller

ISL6551
Electrical Specifications These specifications apply for VDD = VDDP = 12V and T_A = 0°C to 85°C (ISL6551IB) or -40°C to 105°C
(ISL6551AB), Unless Otherwise Stated (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
PWM DELAYS (Note 4)
LOW1,2 delay “Rising”
LOWR With respect to RESDLY rising
5
ns
LOW1,2 delay “Falling”
LOWF Compare Delay @ Verror = Vramp
44
ns
SYNC1,2 delay “Falling”
SYNCF With respect to RESDLY falling and with 20pF load
18
ns
SYNC1,2 delay “Rising”
SYNCR With respect to CLK rising and with 20pF load
20
ns
ERROR AMPLIFIER (EANI, EAI, EAO) (Note 4)
Unity Gain Bandwidth
UGBW
10
MHz
DC Gain
DCG
79
dB
Maximum Offset Error Voltage
Vos
3.1
mV
Input Common Mode Range
Vcm VDD = 12V
0.4
9
V
Common Mode Rejection Ratio
CMMR
82
dB
Power Supply Rejection Ratio
PSSR 1mA load
95
dB
Maximum Output Source Current
ISRC
2
mA
Maximum Lower Saturation Voltage Vsatlow Sinking 0.27mA
125
mV
RAMP ADJUST (R_RA) (Note 4)
Ramp Frequency
F
100
1000
kHz
Linear Voltage Ramp, Minimum
LVR
50
mV
Linear Voltage Ramp, Maximum
250
mV
Overall Variation
25
%
PEAK CURRENT LIMIT (PKILIM)
Peak Current Shutdown Threshold
IpkThr BGREF = 0.1µF, 399kΩ pull-up
1.25 1.263 1.31
V
Peak Current Shutdown Delay
(Note 4)
IpkDel
75
ns
SOFT-START (CSS)
Charge Current
Iss
Vcss = 0.6V
8
12
µA
Discharge Current
Idis
1.6
5.2
mA
Cycle-by-Cycle Current Limit
(ISL6551IB)
Vclamp
2
8
V
Cycle-by-Cycle Current Limit
(ISL6551AB)
Vclamp
1.9
8.1
V
DRIVERS (UPPER1, UPPER2, LOWER1, LOWER2)
Maximum Capacitive Load (each)
CL
VDD = VDDP = 12V, F = 1MHz,
1600
pF
Thermal Dependence
Turn On Rise Time (ISL6551IB)
Tr
1.0nF Capacitive load
8.9
16
ns
Turn On Rise Time (ISL6551AB)
Tr
1.0nF Capacitive load
9.2
17
ns
Turn Off Fall Time (ISL6551IB)
Tf
1.0nF Capacitive load
6.4
10
ns
Turn Off Fall Time (ISL6551AB)
Tf
1.0nF Capacitive load
12
ns
Shutdown Delay (Note 4)
Rising Edge Delay (Note 4)
Falling Edge Delay (Note 4)
Vsat_sourcing
T_SD
T_RD
T_FD
Vsat_high
1.0nF Capacitive load
1.0nF Capacitive load
1.0nF Capacitive load
Sourcing 20mA
14.5
ns
16.4
ns
13.7
ns
1.00
V
Sourcing 200mA
1.35
V
6
FN9066.4
July 8, 2005