STTA312B-TR

® STTA312B TURBOSWITCHTM ULTRA-FAST HIGH VOLTAGE DIODE MAIN PRODUCT CHARACTERISTICS IF(AV) VRRM trr (typ) VF (max) FEATURES AND BENEFITS SPECIFICTO THE FOLLOWING OPERATIONS: SNUBBING OR CLAMPING, DEMAGNETIZATION AND RECTIFICATION ULTRA-FAST, SOFT RECOVERY VERY LOW OVERALL POWER LOSSES AND PARTICULARY LOW FORWARD VOLTAGE HIGHFREQUENCY OPERATION HIGH REVERSE VOLTAGE CAPABILITY 3A 1200 V 65 ns 1.7 V K A NC DPAK DESCRIPTION TURBOSWITCH 1200V drastically cuts losses in all high voltage operationswhich require extremely fast, soft and noise-free power diodes. Due to their optimized switching performances they also highly decrease power losses in any associated switching IGBT or MOSFET in all ”freewheel mode” operations. They are particularly suitable in motor control circuitries, or in primary of SMPS as snubber, clamping or demagnetizing diodes. They are also suitablefor the secondaryof SMPS as high voltage rectifier diodes. ABSOLUTE RATINGS (limiting values) Symbol VRRM VRSM IF(RMS) IFRM IFSM Tstg Tj Parameter Repetitive peak reverse voltage Non repetitive peak reverse voltage RMS forward current Repetitive peak forward current Surge non repetitive forward current Storage temperature range Maximum operating junction temperature tp = 5 µs F = 5kHz square tp = 10ms sinusoidal Value 1200 1200 6 35 25 - 65 to + 150 125 Unit V V A A A °C °C TURBOSWITCH is a trademark of STMicroelectronics November 1999 - Ed: 4A 1/8 STTA312B THERMAL AND POWER DATA Symbol Rth (j-c) P1 Pmax Parameter Junction to case thermal resistance Conduction power dissipation Total power dissipation Pmax = P1 + P3 (P3 = 10% P1) IF(AV) = 3A, δ = 0.5 Tc = 80°C Tc = 76°C Tests conditions Value 6.5 6.7 7.5 Unit °C/W W W STATIC ELECTRICAL CHARACTERISTICS Symbol VF ** IR * Vto rd Test pulses : Parameter Forward voltage drop Reverse leakage current Threshold voltage Dynamic resistance * tp = 380 µs, δ < 2% ** tp = 5 ms , δ < 2% Tests conditions IF = 3 A IF = 3 A VR = 0.8 X VRRM Ip < 3.IAV Tj = 25°C Tj = 125°C Tj = 25°C Tj = 125°C Tj = 125 °C Min. Typ. 1.15 150 Max. 1.8 1.7 20 400 1.15 185 Unit V µA µA V mΩ To evaluatethe maximum conduction losses use the following equation : P = Vto x IF(AV) + rd x IF2(RMS) DYNAMIC ELECTRICAL CHARACTERISTICS TURN-OFF SWITCHING Symbol trr Parameter Tj = 25°C Test conditions IF= 0.5A IR=1A Irr= 0.25A IF= 1A dIF/dt= 50A/µs VR= 30V IF= 3A VR= 600V dIF/dt = -16A/µs dIF/dt = -50A/µs IF= 3A VR= 600V dIF/dt = -50A/µs Min. Typ. Max. Unit 65 115 A 3.6 6.0 1.2 ns IRM Maximum recovery current Softness factor Tj = 125 °C S factor Tj = 125 °C TURN-ON SWITCHING Symbol tfr VFP Parameter Forward recovery time Peak forward voltage Test conditions Tj = 25°C IF=3A dIF/dt = 16A/µs Measured at 1.1 x VFmax Min. Typ. Max. 900 35 Unit ns V 2/8 STTA312B Fig. 1: Conductionlosses versus average current. Fig. 2: Forward voltage drop versus forward current (maximum values). IFM(A) 3E+1 δ = 0.1 δ = 0.2 δ = 0.5 P1(W) 8 7 6 5 4 3 2 1 0 0.0 0.5 1.0 IF(av) (A) 1.5 2.0 2.5 3.0 3.5 δ=1 1E+1 1E+0 Tj=125°C 1E-1 Tj=25°C VFM(V) 1E-2 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Fig. 3: Relative variation of thermal impedance junction to case versus pulse duration. Zth(j-c)/Rth(j-c) 1.0 0.8 0.6 0.4 0.2 0.0 1E-3 δ = 0.5 Fig. 4: Peak reverse recovery current versus dIF/dt (90% confidence). IRM(A) 14 12 10 8 IF=IF(av) VR=600V Tj=125°C IF=2*IF(av) δ = 0.2 δ = 0.1 6 T Single pulse 4 tp tp(s) 1E-2 1E-1 δ=tp/T 2 1E+0 dIF/dt(A/µs) 0 10 20 30 40 50 60 70 80 90 100 0 Fig. 5: Reverse recovery time versus dIF/dt (90% confidence). trr(ns) 600 500 400 IF=2*IF(av) VR=600V Tj=125°C Fig. 6: Softness factor tb/ta versus dI F/dt (typical values). S factor 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 IF