L6204D datasheet(9/12 Pages) STMICROELECTRONICS

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L6204D データシート(PDF) 9 Page - STMicroelectronics

部品番号	L6204D

部品情報	DMOS DUAL FULL BRIDGE DRIVER

PDF	12 Pages

Scroll/Zoom	100%

メーカー	STMICROELECTRONICS [STMicroelectronics]

ホームページ	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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