LT1158CSW Datasheet, PDF (20/22 Pages) Linear Dimensions Semiconductor – Half Bridge N-Channel Power MOSFET Driver

LT1158
TYPICAL APPLICATIONS
1N4148
ENABLE A
FAULT A
INPUT A
1
BOOST DR
16
BOOST
2 _V+
0.01μF
3
BIAS
T GATE DR ¹⁵
14
T GATE FB
+
4 _ENABLE
T SOURCE ¹³
10μF _{5 FAULT}
LT1158 _{SENSE+ 12}
6
INPUT
SENSE^{– 11}
7 _GND
V^{+ 10}
8
B GATE FB
9
B GATE DR
15Ω
D1
15Ω
10V TO 30V
0.1μF
Q1
+
470μF
LOW
ESR
SIDE A: SHOWS
STANDARD MOSFET
CONNECTION
+
R_S
0.015Ω
–
Q2
2.4k
ENABLE B
FAULT B
INPUT B
1N4148
1
BOOST DR
16
BOOST
2 _V+
0.01μF
3
BIAS
T GATE DR ¹⁵
14
T GATE FB
+ 10μF
4 _ENABLE
5 _FAULT
T SOURCE ¹³
LT1158 _{SENSE+ 12}
6
INPUT
SENSE^{– 11}
7 _GND
V^{+ 10}
8
B GATE FB
9
B GATE DR
15Ω
D2
47Ω
15Ω
+
470μF
Q3
LOW
ESR
0.1μF
+–
-
SIDE B: SHOWS
CURRENT-SENSING
MOSFET CONNECTION
2.4k
Q4
Q1, Q3: IRF540 (STANDARD)
IRC540 (SENSE FET)
Q2, Q4: IRFZ44
D1, D2: BAT83
R_S: DALE TYPE LVR-3
ULTRONIX RCS01
LT1158 F17a
Control Logic for Sign/Magnitude Drive
74HC02
ENABLE A
FAULT A
INPUT A
Control Logic for Locked Anti-Phase Drive
Motor stops if either side is shorted to ground
5V
74HC132 5.1k
PWM
0.01μF
ENABLE A
FAULT A
INPUT A
PWM
DIRECTION
STOP
(FREE RUN)
1N4148
+
1μF
20
ENABLE B
FAULT B
INPUT B
1158F17b
0.1μF
Figure 17. 10A Full Bridge Motor Control
150k
1N4148
ENABLE B
FAULT B
INPUT B
1158F17c
1158fb