L6204D datasheet(9/12 Pages) STMICROELECTRONICS

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L6204D Folha de dados(PDF) 9 Page - STMicroelectronics

Nome de Peças	L6204D

Descrição Electrónicos	DMOS DUAL FULL BRIDGE DRIVER

PDF	12 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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9 / 12 page

9/12

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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