DRV8809 Datasheet, PDF (39/44 Pages) Texas Instruments – COMBINATION MOTOR DRIVERS WITH DC-DC CONVERTERS

DRV8809
DRV8810
www.ti.com ............................................................................................................................................................... SLVS854A – JULY 2008 – REVISED JULY 2008
OSCM
Phase
fChop
tBlank
(1,0) *1
tBlank
(0,1) *2
Resync
8 x OSCM clocks
n=3
Resync
8 x OSCM clocks
n=3
Resync
(n=3)
n=3
n=6
n=6
(n=6)
(n=6)
*1 : Setup register bit <4,3> = ( 1,0 ) : tBlank = OSCM clock x 3 (or bit <5,6> for H-bridge C,D channel )
*2 : Setup register bit <4,3> = ( 0,1 ) : tBlank = OSCM clock x 6 (or bit <5,6> for H-bridge C,D channel )
Figure 34. Blanking Time Insertion Timing, Case B
Resync
n=3
n=6
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