MOTOROLA BYE D MM 6367255 0086482 470 mMMOT? == SEMICONDUCTOR mum TECHNICAL DATA MOTOROLA SC (CDIODES/OPTO) MUR870E Switchmode Power Rectifiers MURS880E Ultrafast E Series MURS890E w/High Reverse Energy Capability MUR8100E MURBI00E is a Motorola Preferred Device ... designed for use in switching power supplies, inverters and as free wheeling diodes, these state-of-the-art devices have the following features: 20 mjoules Avalanche Energy Guaranteed RECneas Excellent Protection Against Voltage Transients in Switching Inductive Load Circuits 9 9 9 8.0 AMPERES Ultrafast 75 Nanosecond Recovery Time 175C Operating Junction Temperature Popular TO-220 Package Epoxy Meets UL94, Vo @ 1/8 Low Forward Voltage Low Leakage Current High Temperature Glass Passivated Junction oO P| Oo Reverse Voltage to 1000 Volts 700-1000 VOLTS CASE 2218-02 TO-220AC MAXIMUM RATINGS MUR Rating Symbol 870 880 830 | 8100 Unit Peak Repetitive Reverse Voltage VRRM 700 800 300 1000 Volts Working Peak Reverse Voltage VRWM DC Blocking Voltage VR Average Rectified Forward Current Total Device, (Rated Vp), Tc = 150C levy) 8.0 Amps Peak Repetitive Forward Current lFM 16 Amps (Rated VR, Square Wave, 20 kHz), Tc = 150C Nonrepetitive Peak Surge Current lFSM 100 Amps (Surge applied at rated load conditions halfwave, single phase, 60 Hz) Operating Junction Temperature and Storage Temperature Ty, Tstg 65 to +175 c THERMAL CHARACTERISTICS Maximum Thermal Resistance, Junction to Case Resc 2.0 C/W ELECTRICAL CHARACTERISTICS Maximum Instantaneous Forward Voltage (1) VE Volts (ig = 8.0 Amp, Te = 150C) 15 (if = 8.0 Amp, Tc = 25C) 1.8 Maximum Instantaneous Reverse Current (1) ig BA (Rated de Voltage, Tc = 100C) 00 (Rated dc Voltage, Tc = 25C) 25 Maximum Reverse Recovery Time ter ns (Ip = 1.0 Amp, di/dt = 50 Amp/us) 100 (ip = 0.5 Amp, in = 1.0 Amp, IREC = 0.25 Amp) 75 Controlled Avalanche Energy WAVAL 20 mJ (See Test Circuit in Figure 6) {1) Pulse Test: Pulse Width = 300 us, Duty Cycle < 2.0%. SWITCHMODE is a trademark of Motorola Inc. 3-268 MUR870E, MUR880E MOTOROLA SC (DIODES/OPTO) G4E D MM 6367255 0086483 307 MOT? 100 *The curves shown are typical for the highest voltage 70 device in the voltage grouping Typical reverse current 1K for lower voltage selections can be estimated from 50 400 these same curves if Vp 1s sufficiently below rated Vp 200 30 _ "a 0 Sn z 10 = 4 B 2 10 B 1 = 04 = 7 a 0.2 = eo 5 0.04 & 0.02 EA 0.01 So 3 0 200 400 600 800 iK a 2 Ty = 15C 100C oC Vp, REVERSE VOLTAGE (VOLTS) 5 Figure 2. Typical Reverse Current* 8 3 2 < 1 10 = B07 2 Rated Vp 05 Apphed 03 0.2 yw wo & MD 4 w wo 01 04 06 08 10 12 14 16 18 vp, INSTANTANEOUS VOLTAGE (VOLTS} Irtav) AVERAGE FORWARD CURRENT (AMPS) a S 150 160 170 180 Figure 1. Typical Forward Voltage Te, CASE TEMPERATURE (C) Figure 3. Current Derating, Case _ 10 al a E13 29 = age : 16C 21 z a RAJA = 60C " & 7 (No Heat Sink) x Square Go wn 6 Bg 2 Square e = 5 Wave o 7 S S 6 x 4 a 8 Be Fot~ = 4 = 2 => < Square ~ = 2 = 1b Wave = =< 1 =o ~~ 4-- e 0 20 4 60 80 100 120 140 160 180 200 0 1 2 3 4 5 6 7 8 9 10 Ta, AMBIENT TEMPERATURE (C) IF(ay). AVERAGE FORWARD CURRENT {AMPS) Figure 4. Current Derating, Ambient Figure 5. Power Dissipation 3-269 MOTOROLA SC CDIODES/OPTO) MUR870E, MUR880E BYE D MM 6367255 OOS6b484 2435 MNOT? +Voo 40 4H COIL Vo MERCURY SWITCH \ $y BVpuT 4 \ f D i a \ \ 7 \ Yoo lg 4 tg t Figure 6. Test Circuit The unclamped inductive switching circuit shown in Figure 6 was used to demonstrate the controlled ava- lanche capability of the new E series Ultrafast rectifiers. A mercury switch was used instead of an electronic switch to simulate a noisy environment when the switch was being opened. When Sy is closed at tg the current in the inductor I, ramps up linearly; and energy is stored in the coil. At ty the switch is opened and the voltage across the diode under test begins to rise rapidly, due to di/dt effects, when this induced voltage reaches the breakdown voltage of the diode, it is clamped at BVpuT and the diode begins to conduct the full load current which now starts to decay dinearly through the diode, and goes to zero at to. By solving the loop equation at the point in time when $1 is opened; and calculating the energy that is trans- ferred to the diode it can be shown that the total energy transferred is equal to the energy stored in the inductor plus a finite amount of energy from the Vpp power sup- ply while the diode is in breakdown (from t1 to ta) minus ia Fy ia Pa Sea EQUATION (1): BYDUT ) ~112 waval ~3 Ut (pur Wop EQUATION (2): 1 WAVAL ~ 5 Life, aN Cia Use) Laeerarrn TTT arty tts a4 BT DAG Figure 7. Current-Voltage Waveforms any losses due to finite component resistances. Assum- ing the component resistive elements are small Equation {1} approximates the total energy transferred to the diode. It can be seen from this equation that if the Vpp voltage is low compared to the breakdown voltage of the device, the amount of energy contributed by the supply during breakdown is small and the total energy can be assumed to be nearly equal to the energy stored in the coil during the time when Sj was closed, Equation (2). The oscilloscope picture in Figure 8, shows the MURS8100E in this test circuit conducting a peak current of one ampere at a breakdown voltage of 1300 volts, and using Equation (2) the energy absorbed by the MUR8100E is approximately 20 mjoules. Although it is not recommended to design for this condition, the new E" series provides added protec- tion against those unforeseen transient viruses that can produce unexplained random failures in unfriendly environments. bh 25 2 CHANNEL 2: I 0.5 AMPSIDIV, CHANNEL 1: VouT 500 VOLTS/DIV TIME BASE. 20 us/DIV Figure 8. Current-Voltage Waveforms 3-270 MUR870E, MUR880E MOTOROLA SC (DIODES/OPTO) BYE D Ml 6367255 0086485 L&T MENOT? P; = rthRgsc (pk) Raye = 15CW MAX D CURVES APPLY FOR POWER Sinz] PULSE TRAIN SHOWN p=! READ TIME ATT} SINGLE PULSE DUTY CYCLE, D = ty/tz Tyypk) Te = Pip) Zauctn r{t], TRANSIENT THERMAL RESISTANCE (NORMALIZED) 0.01 0.02 0.05 01 02 05 1 2 5 10 20 50 100 200 500 1K 1, TIME (ms) Figure 9. Thermal Response C, CAPACITANCE (pF) 1 10 100 Vp, REVERSE VOLTAGE {VOLTS} Figure 10. Typical Capacitance 3-271