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L6204D 数据表(PDF) 9 Page - STMicroelectronics

部件名 L6204D
功能描述  DMOS DUAL FULL BRIDGE DRIVER
PDF  12 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6204D 数据表(HTML) 9 Page - STMicroelectronics

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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
The Total Power Dissipation PDIS is simply :
PDIS = ETOT/T
Tr = Rise time
TON = ON time
Tf = Fall Time
Td = Dead time
T = Period
T = Tr + TON + Tf + Td
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