STTA106U(1995) データシートの表示（PDF） - STMicroelectronics

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STTA106U
(Rev.:1995)

TURBOSWITCH™ ”A”. ULTRA-FAST HIGH VOLTAGE DIODE

STMicroelectronics 

APPLICATION DATA

The TURBOSWITCHTM ”A” is especially

designed to provide the lowest overall power

losses in any ”Freewhell Mode” application (see

fig. 1) considering both the diode and the

companion transistor, thus optimizing the overall

performance in the end application.

STTA106U

The way of calculating the power losses is given

below :

TOTAL LOSSES

due to the diode

P = P1+ P2+ P3+ P4+ P5 Watts

CONDUCTION

LOSSES

in the diode

P1 Watts

(Fig. 2)

REVERSE

LOSSES

in the diode

P2 Watts

(Fig. 2)

SWITCHING

LOSSES

in the diode

OFF : P3 Watts

ON : P4 Watts

(Fig. 3 & 4)

SWITCHING

LOSSES

in the transistor

due to the diode

P2 Watts

(Fig. 3)

Fig. 1 : ”FREEWHEEL” MODE

SWITCHING

TRANSISTOR

DIODE:

TURBOSWITCH ”A”

VR

t

T

F = 1/T = t/T

IL

LOAD

3/6

®

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