Datasheet

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Synchronization
1
2
3 ENABLE/SYNC
Sync
Control
V
I
+
V
I
−
V
I
+
V
I
−
MECHANICALS
TapeandReel
TOLERANCESUNLESS
OTHERWISESPECIFIED
.XX=
0.005HOLES= 0.001
.XXX= 0.003 ANGLES= 1/2”
± ±
± ±
© ThisDocumentandtheinformation
containedhereinisconfidentialand
proprietarytoTexasInstrumants,and
maynotbereproducedorusedforany
purposewithouttheexpressedwritten
permissionofTexasInstruments.
PTMA403033
PTMA402050
PTMA401120
SLTS259B–FEBRUARY2006–REVISEDMAY2007
TheSynchronizationoptionallowsmultiplepowermodulestobesynchronizedtoacommonfrequency.Driving
theSyncpin(pin 3)withanexternalclocksettothedesiredfrequency,synchronizesallconnectedmodulesto
thatfrequency.Moduleswiththesynchronizationoptionhaveareducedfree-runningswitchingfrequencyof
215 kHztypical.Thesynchronizationfrequencycanonlybeadjustedtoahigherfrequency,upto350 kHz.A
5-Vlogicsignalisrecommendedforcontrol.SeeFigure17.SeetheElectricalCharacteristicstablefor
synchronizationlimits.
Figure17.SynchronizationControl
14
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