PD - 94308A FRED Ultrafast, Soft Recovery Diode Features Reduced RFI and EMI Reduced Snubbing Extensive Characterization of Recovery Parameters Hermetic V R = 200V I F(AV) = 50A t rr = 35ns Description These Ultrafast, soft recovery diodes are optimized to reduce losses and EMI/RFI in high frequency power conditioning systems. An extensive characterization of the recovery behavior for different values of current, temperature and di/dt simplifies the calculations of losses in the operating conditions. The softness of the recovery eliminates the need for a snubber in most applications. These devices are ideally suited for power converters, motors drives and other applications where switching losses are significant portion of the total losses. Absolute Maximum Ratings Parameter Max. Units V R Cathode to Anode Voltage 200 V I F(AV) Continuous Forward Current, T C = 87 C 50 I FSM Single Pulse Forward Current, T C 450 A P D @ T C Maximum Power Dissipation 67 W, T STG Operating Junction and Storage Temperature Range -55 to +50 C Note: D.C. = 50% rect. wave /2 sine wave, 60 Hz, P.W. = 8.33 ms CASE STYLE (ISOLATED BASE) TO-258AA CATHODE ANODE ANODE www.irf.com 0/8/0
Electrical Characteristics @ (unless otherwise specified) Parameter Min. Typ. Max. Units Test Conditions V BR Cathode Anode Breakdown Voltage 200 V I R = µa V F Forward Voltage.34, = -55 C See Fig. ƒ.28 V, See Fig. 2.7 I F = A,.69 I F = A, I R Reverse Leakage Current 0 µa V R = V R Rated See Fig. 2 ƒ 200 µa V R = V R Rated, C unction Capacitance, See Fig. 3 360 pf V R = 200V L S Series Inductance 8.7 nh Measured from anode lead to cathode lead, 6 mm ( 0.025 in ) from package Dynamic Recovery Characteristics @ (unless otherwise specified) Parameter Min. Typ. Max. Units Test Conditions t rr Reverse Recovery Time 35 ns I F = 0.5A,V R = 30V, di f /dt = 300A/µs t rr Reverse Recovery Time 42 ns See Fig. t rr2 69 5 I RRM Peak Recovery Current 4.4 T A J See Fig. I RRM2 8.7 A 6 V R = 60V Q rr Reverse Recovery Charge 08 T nc J See Fig. Q rr2 34 nc 7 di f /dt = 200A/µs di (rec)m /dt Peak Rate of Fall of Recovery Current 390 T A/µs J See Fig. di (rec)m /dt2 During t b 570 A/µs 8 Thermal - Mechanical Characteristics Parameter Typ. Max. Units R thjc Junction-to-Case 0.75 C/W Wt Weight 0.9 g Note: ƒ Pulse Width < 300µs, Duty Cycle < 2% Pins 2 and 3 externally tied together 2 www.irf.com
Instantaneous Forward Current - I F (A) Junction Capacitance - C T (pf) Reverse Current - I R (µa) 25 C 0 C 75 C 0. 25 C 0.0 0 0.00 Fig. 2 - Typical Reverse Current Vs. Reverse Voltage 00 0 40 80 20 60 200 Reverse Voltage - V R (V) Tj Tj 0 Tj = -55 C 0.0 0.4 0.8.2.6 2.0 Forward Voltage Drop - V F (V) 0 40 80 20 60 200 Reverse Voltage - V R (V) Fig. - Maximum Forward Voltage Drop Vs. Instantaneous Forward Current Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage Thermal Response (Z thjc ) 0. D = 0.50 0.20 0.0 0.05 0.02 t2 0.0 SINGLE PULSE (THERMAL RESPONSE) Notes:. Duty factor D = t / t 2 2. Peak = P DM x Z thjc + TC 0.0 0.0000 0.000 0.00 0.0 0. t, Rectangular Pulse Duration (sec) Fig. 4 - Maximum Thermal Impedance Z thjc Characteristics www.irf.com 3 PDM t
Q rr - ( nc ) / dt - ( A / µs ) t rr - ( ns ) I RRM - ( A ) 80 V R = 60V I F = A 60 I F = A 0 40 V R = 60V 20 0 0 Fig. 5 - Typical Reverse Recovery Vs. di f /dt, Fig. 6 - Typical Recovery Current Vs. di f /dt, 0 I F = A 00 I F = A 0 V R = 60V di ( rec )M V R = 60V 0 0 0 Fig. 7 - Typical Stored Charge Vs. di f /dt Fig. 8 - Typical di (rec)m /dt Vs. di f /dt 4 www.irf.com
REVERSE RECOVERY CIRCUIT dif/dt ADJUST L = 70µH G V R = 200V 0.0 Ω D S IRFP250 D.U.T. 0 I F di /dt f. di f/dt - Rate of change of current through zero crossing 2. I RRM - Peak reverse recovery current 3. trr - Reverse recovery time measured from zero crossing point of negative going I F to point where a line passing through 0.75 I RRM and 0.50 I RRM extrapolated to zero current t a 2 3 trr I RRM t b 0.75 I RRM Q rr 0.5 I RRM di(rec)m/dt 4. Q rr - Area under curve defined by t rr and I RRM t rr X I RRM Q rr = 2 5. di (rec)m/dt - Peak rate of change of current during t b portion of t rr 4 5 Fig. 9 - Reverse Recovery Parameter Test Circuit Case Outline and Dimensions TO-258AA Fig. 0 - Reverse Recovery Waveform and Definitions 4.9 [.65] 3.93 [.55] A 7.65 [.695] 7.39 [.685] 6.85 [.270] 6.09 [.240] 0.2 [.005].4 [.045] 0.88 [.035] 37.00 [.457] 20.40 [.97] 7.95 [.707] 7.70 [.697] 2 3 2.20 [.835] 20.70 [.85] 3.97 [.550] 3.46 [.530] 9.05 [.750] 2.70 [.500] C B 5.08 [.200] 2X 3X.65 [.065].39 [.055] 0.50 [.020] C A B 0.25 [.00] C 3.55 [.40] NOT ES:. DIMENSIONING & TOLERANCING PER ASME Y4.5M-994. 2. ALL DIMENSIONS ARE SHOWN IN MILLIMETERS [INCHES]. 3. CONTROLLING DIMENSION: INCH. 4. CONFORMS TO JEDEC OUTLINE TO-258AA. PIN ASSIGNMENTS = CATHODE 2 = ANODE 3 = ANODE IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (30) 252-705 TAC Fax: (30) 252-7903 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 0/0 www.irf.com 5