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Application and Test Diagram
VSS
VSS
I/O
mP
VSS
COIL +
CS3720
ENABLE1
ENABLE2
DIRECTION
Gnd
COIL -
D1 D1
D1 D1
LLOAD
5mH
RLOAD
30W
CLOAD
0.1mF
D1 = IN4001
or equivalent
Note: A heatsink is required for 2A operation.
Figure 1. Delay Times for ENABLE and COIL
ENABLE2 = 2.4V
5V
ENABLE1
50%
0V
5V
DIRECTION
0V
17V
COIL+
10%
0V
17V
COILÐ
0V
5V
ENABLE2
0V
ENABLE1 = 0.4V
50%
50ms
Turnoff
Delay
5V
DIRECTION
0V
17V
COIL+
10%
0V
17V
COILÐ
0V
50%
90%
50ms
Turnoff
Delay
50%
90%
3