L6204 Ver la hoja de datos (PDF) - STMicroelectronics

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L6204

DMOS DUAL FULL BRIDGE DRIVER

STMicroelectronics 

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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