Datasheet

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