UC2625-EP
SLUS802–MARCH 2008 .................................................................................................................................................................................................. www.ti.com
FIGURE A
FIGURE B
TO
MOTOR
TO
MOTOR
RS
RS
FIGURE C
FIGURE D
TO
TO
MOTOR
MOTOR
RS
RD
RS
Figure 8. Four Power Stage Designs
Table 1. Imposed Limitations for Figure 8
CURRENT SENSE
SAFE
BRAKING
2 QUADRANT 4 QUADRANT
POWER REVERSE
Pulse-by-Pulse
Average
No
Figure A
Figure B
Figure C
Figure D
Yes
Yes
Yes
Yes
No
No
No
N0
Yes
Yes
Yes
Yes
Yes
Yes
Yes
In 4-quad mode only
In 4-quad mode only
In 4-quad mode only
Yes
Yes
Yes
No
Yes
14
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