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ISL6551IREC Datasheet, PDF (6/23 Pages) Intersil Corporation – ZVS Full Bridge PWM Controller
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ISL6551IREC
Electrical Specifications
These specifications apply for VDD = VDDP = 12V and TA = 0°C to +85°C, Unless Otherwise Stated.
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
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
Maximum Lower Saturation Voltage
Vsatlow Sinking 0.27mA
125 mV
RAMP ADJUST (R_RA) (Note 3)
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 3)
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
Vclamp
2
8
V
DRIVERS (UPPER1, UPPER2, LOWER1, LOWER2)
Maximum Capacitive Load (each)
CL
VDD = VDDP = 12V, F = 1MHz,
Thermal Dependence
1600
pF
Turn-On Rise Time
Turn-Off Fall Time
Shutdown Delay (Note 3)
Rising Edge Delay (Note 3)
Falling Edge Delay (Note 3)
Vsat_sourcing
tr
1.0nF Capacitive load
tf
1.0nF Capacitive load
tSD
1.0nF Capacitive load
tRD
1.0nF Capacitive load
tFD
1.0nF Capacitive load
Vsat_high Sourcing 20mA
8.9 16 ns
6.4 10 ns
14.5
ns
16.4
ns
13.7
ns
1.00 V
Sourcing 200mA
1.35 V
Vsat_sinking
Vsat_low Sinking 20mA
0.035 V
Sinking 200mA
0.31 V
SYNCHRONOUS SIGNALS (SYNC1, SYNC2)
Maximum Capacitive Load
VDD = 12, F = 1MHz
20
pF
PROGRAMMABLE DELAYS (RESDLY, LEB) (Note 3)
Resonant Delay Adjust Range
(Figure 7)
50
500 ns
Resonant Delay
tRESDLY R_RESDLY = 10k
R_RESDLY = 120k
55
ns
488
ns
Leading Edge Blanking Adjust Range
(Figure 8)
50
300 ns
Leading Edge Blanking
tLEB
R_LEB = 20k
R_LEB = 140k
64
ns
302
ns
R_LEB = 12V
0
ns
LATCHING SHUTDOWN (LATSD)
Fault Threshold
VIN
3
V
Fault_NOT Threshold
VINN
1.9 V
Time to Set latch (Note 3)
ON/OFF (ONOFF)
tSET
415
ns
Turn-off Threshold
OFF
0.8 V
Turn-on Threshold
ON
2
V
6
FN6762.0
September 2, 2008
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