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