ISL6522B Datasheet, PDF (5/15 Pages) Intersil Corporation – Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

ISL6522B
Electrical Specifications
PARAMETER
Soft START
Soft-Start Current
Peak Soft Start Voltage
GATE DRIVERS
Upper Gate Source
Upper Gate Sink
Lower Gate Source
Lower Gate Sink
PROTECTION
OCSET Current Source
Recommended Operating Conditions, Unless Otherwise Noted (Continued)
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
I_SS
V_SS
I_UGATE
R_UGATE
I_LGATE
R_LGATE
V_BOOT - V_PHASE = 12V, V_UGATE = 6V
ISL6522BC, I_UGATE = 0.3A
ISL6522BI, I_UGATE = 0.3A
V_CC = 12V, V_LGATE = 6V
ISL6522BC, I_LGATE = 0.3A
ISL6522BI, I_LGATE = 0.3A
I_OCSET V_OCSET = 4.5VDC
-
10
-
µA
-
4.5
-
V
350
500
-
mA
-
5.0
8.75
Ω
-
5.0
9.25
Ω
300
450
-
mA
-
3.2
5.55
Ω
-
3.2
5.85
Ω
170
200
230
µA
Typical Performance Curves
1000
100
10
R_T PULLUP
TO +12V
R_T PULLDOWN
TO V_SS
10
100
SWITCHING FREQUENCY (kHz)
FIGURE 1. R_T RESISTANCE vs FREQUENCY
1000
80
70
60
C_GATE = 3300pF
50
40
30
C_GATE = 1000pF
20
10
C_GATE = 10pF
0
100 200 300 400 500 600 700 800 900 1000
SWITCHING FREQUENCY (kHz)
FIGURE 2. BIAS SUPPLY CURRENT vs FREQUENCY
5