TLE 4203
Application
In industrial and automotive electronics, power full-bridge DC motor drivers are mostly
used for bidirectional motor drives. The two TTL and CMOS-compatible control inputs
act on the output as follows:
Status
1
2
3
4
Input 1
L
L
H
H
Input 2
L
H
L
H
Output 1
VQL
VQL
VQH
VQH
Output 2
VQL
VQH
VQL
VQH
VQL means: Lower power unit conducting; upper power unit blocked.
VQH means: Upper power unit conducting; lower power unit blocked.
The following examples illustrate the operation:
Status 1: Motor is slowed down
Status 2: Motor turns right
Status 3: Motor turns left
Status 4: Motor is slowed down
Semiconductor Group
4
1998-02-01