STTA112 datasheet(7/8 Pages) STMICROELECTRONICS

部件名	STTA112

功能描述	TURBOSWITCH ULTRA-FAST HIGH VOLTAGE DIODE

PDF	8 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

7 / 8 page

I F

V F

V Fp

1.1V F

V F

dI /dt

I Fmax

tfr

Fig. G : TURN-ON CHARACTERISTICS.

Turn-on losses :

P4 = 0.4 (VFP -VF)x IFmax xtfr xF

Turn-on losses :

(in the transistor, due to the diode)

P5 =

× IRM 2

× (3+2 × S) F

xdIF

⁄ dt

× IRM × IL ×(S + 2

) × F

× dIF ⁄ dt

Turn-off losses :

P3 =

× IRM 2

× × S × F

dIF

⁄ dt

Turn-off losses :

with non negligible serial inductance

P3’ =

× IRM 2

× S × F

xdIF

⁄ dt

× IRM 2 × F

P3, P3’ and P5 are suitable for power MOSFET

and IGBT

Fig. F : TURN-OFF CHARACTERISTICS.

F /dt = VR /L

dI /dt

S = tb/ta

trr = ta + tb

RECTIFIER

OPERATION

TRANSISTOR

dI /dt

I RM

DIODE

trr = ta + tb

S = tb / ta

APPLICATION DATA (Cont’d)

STTA112U

7/8

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