L6204 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L6204' PDF : 12 Pages View PDF
L6204
FALL TIME Tf
For this example it is assumed that the energy dissipated in this part of the cycle takes the same form as
that shown for the rise time :
EON/OFF = [RDS(ON) · IL · Tf] · 2/3
QUIESCENT ENERGY
The last contribution to the energy dissipation is due to the quiescent supply current and is given by :
EQUIESCENT = IQUIESCENT · VS · T
TOTAL ENERGY PER CYCLE
ETOT = (EOFF/ON + EON + ECOM + EON/OFF) bridge 1 + (EOFF/ON + EON + ECOM + EON/OFF)bridge 2 +
) + EQUIESCENT
t(s The Total Power Dissipation PDIS is simply :
duc Tr = Rise time
PDIS = ETOT/T
ro TON = ON time
P Tf = Fall Time
te Td = Dead time
le T = Period
Obsolete Product(s) - Obso T = Tr + TON + Tf + Td
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