
5
Soft START
Soft-Start Current
I
SS
-
10
-
μ
A
Peak Soft Start Voltage
V
SS
-
4.5
-
V
GATE DRIVERS
Upper Gate Source
I
UGATE
V
BOOT
 - V
PHASE
 = 12V, V
UGATE
 = 6V
350
500
-
mA
Upper Gate Sink
R
UGATE
ISL6522BC, I
UGATE
 = 0.3A
-
5.0
8.75
ISL6522BI, I
UGATE
 = 0.3A
-
5.0
9.25
Lower Gate Source
I
LGATE
V
CC
 = 12V, V
LGATE
 = 6V
300
450
-
mA
Lower Gate Sink
R
LGATE
ISL6522BC, I
LGATE
 = 0.3A
-
3.2
5.55
ISL6522BI, I
LGATE
 = 0.3A
-
3.2
5.85
PROTECTION
OCSET Current Source
I
OCSET
V
OCSET
 = 4.5VDC
170
200
230
μ
A
Electrical Specifications
Recommended Operating Conditions, Unless Otherwise Noted
  (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Typical Performance Curves
FIGURE 1. R
T
 RESISTANCE vs FREQUENCY
FIGURE 2. BIAS SUPPLY CURRENT vs FREQUENCY
10
100
1000
SWITCHING FREQUENCY (kHz)
R
)
10
100
1000
R
T
 PULLUP
TO +12V
R
T
 PULLDOWN
TO V
SS
100
200
300
400
500
600
700
800
900
1000
80
70
60
50
40
30
20
10
0
I
V
SWITCHING FREQUENCY (kHz)
C
GATE
 = 1000pF
C
GATE
 = 3300pF
C
GATE
 = 10pF
ISL6522B