ACNT-H313-500E

ACNT-H313 2.5 A Output Current IGBT Gate Drive Optocoupler in 15 mm Stretched SO8 Package Data Sheet Description Features The Avago Technologies ACNT-H313 contains an LED, which is optically coupled to an integrated circuit with a power output stage. This optocoupler is ideally suited for driving power IGBTs and MOSFETs used in motor control inverter applications. The high operating voltage range of the output stage provides the drive voltages required by gate-controlled devices. The voltage and high peak output current supplied by this optocoupler can be used to IGBT directly. For IGBTs with higher ratings, this optocoupler can be used to drive a discrete power stage, which drives the IGBT gate. The ACNT-H313 has the highest insulation voltage of VIORM = 2262 VPEAK in the IEC/EN/DIN EN 60747-5-5.           Functional Diagram NC 1 8 VCC 7 VOUT ANODE 2 CATHODE 3 6 NC NC 4 5 VEE 2.5 A maximum peak output current 2.0 A minimum peak output current 500 ns maximum propagation delay 350 ns maximum propagation delay difference 40 kV/μms minimum Common Mode Rejection (CMR) at VCM = 2000 V ICC = 5.0 mA maximum supply current Under Voltage Lock-Out protection (UVLO) with hysteresis Wide operating VCC Range: 15 V to 30 V Industrial temperature range: -40°C to 105°C Safety Approval — UL Recognized 7500 VRMS for 1 min — CSA — IEC/EN/DIN EN 60747-5-5 VIORM = 2262 VPEAK Applications    NOTE NC denotes Not Connected, and a 0.1 μF bypass capacity must be connected between pins VCC and VEE.    Truth Table High Power System – 690VAC Drives IGBT/MOSFET gate drive AC and Brushless DC motor drives Renewable energy inverters Industrial inverters Switching power supplies CAUTION LED VCC – VEE VCC – VEE “POSITIVE GOING” “NEGATIVE GOING” (i.e., TURN-ON) (i.e., TURN-OFF) VO OFF 0 - 30 V 0 – 30 V LOW ON 0 – 11 V 0 – 9.5 V LOW ON 11 - 13.5 V 9.5 – 12 V TRANSITION ON 13.5 – 30 V 12 – 30 V HIGH Broadcom -1- It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation that may be induced by ESD. The components featured in this data sheet are not to be used in military or aerospace applications or environments. ACNT-H313 Data Sheet Ordering Information Ordering Information ACNT-H313 is UL Recognized with 7500 VRMS for 1 minute per UL1577. Option Part Number Package Surface Mount Tape & Reel IEC/EN/DIN EN 60747-5-5 VIORM=2262 VPEAK X 80 per tube X X 1000 per reel RoHS Compliant ACNT-H313 -000E -500E 15 mm Stretched SO-8 X X Quantity To order, choose a part number from the part number column and combine with the desired option from the option column to form an order entry. Example 1: ACNT-H313-500E to order a product in Surface Mount package in Tape and Reel packaging with IEC/EN/DIN EN 60747-5-5 Safety Approval and RoHS compliant. Option data sheets are available. Contact your Avago sales representative or authorized distributor for information. Package Outline Drawings ACNT-H313 Outline Drawing Broadcom -2- ACNT-H313 Data Sheet Recommended Pb-Free IR Profile Recommended Pb-Free IR Profile Recommended reflow condition as per JEDEC Standard, J-STD-020 (latest revision). Non- Halide Flux should be used. Regulatory Information The ACNT-H313 is approved by the following organizations. UL Recognized under UL 1577, component recognition program up to VISO = 7500 VRMS, File E55361 CSA CSA Component Acceptance Notice #5, File CA 88324 IEC/EN/DIN EN 60747-5-5 Maximum Working Insulation Voltage VIORM = 2262 VPEAK Table 1. IEC/EN/DIN EN 60747-5-5 Insulation Characteristics (See Note) Description Symbol Characteristic Installation classification per DIN VDE 0110/39, Table 1 for rated mains voltage ≤ 600 Vrms for rated mains voltage ≤1000 Vrms I-IV I-IV Climatic Classification 40/105/21 Pollution Degree (DIN VDE 0110/39) 2 Unit Maximum Working Insulation Voltage VIORM 2262 VPEAK Input to Output Test Voltage, Method ba VIORM × 1.875=VPR, 100% Production Test with tm=1 sec, Partial discharge < 5 pC VPR 4242 VPEAK Input to Output Test Voltage, Method a* VIORM × 1.6=VPR, Type and Sample Test, tm=10 sec, Partial discharge < 5 pC VPR 3619 VPEAK Highest Allowable Overvoltagea Transient Overvoltage tini = 60 sec) VIOTM 12000 VPEAK TS IS, INPUT °C mA mW  Safety-limiting values – maximum values allowed in the event of a failure Case Temperature Input Current Output Power PS, OUTPUT 175 230 1000 Insulation Resistance at TS, VIO = 500 V RS >109 a. Refer to IEC/EN/DIN EN 60747-5-5 Optoisolator Safety Standard section of the Avago Regulatory Guide to Isolation Circuits, AV02-2041EN for a detailed description of Method a and Method b partial discharge test profiles. NOTE These optocouplers are suitable for “safe electrical isolation” only within the safety limit data. Maintenance of the safety data shall be ensured by means of protective circuits. Surface mount classification is Class A in accordance with CECC 00802. Broadcom -3- ACNT-H313 Data Sheet Table 2. Insulation and Safety Related Specifications Table 2. Insulation and Safety Related Specifications Parameter Symbol ACNT-H313 Units Conditions Minimum External Air Gap (Clearance) L(101) 14.2 mm Measured from input terminals to output terminals, shortest distance through air. Minimum External Tracking (Creepage) L(102) 15 mm Measured from input terminals to output terminals, shortest distance path along body. 0.5 mm Through insulation distance conductor to conductor, usually the straight line distance thickness between the emitter and detector. > 300 V Minimum Internal Plastic Gap (Internal Clearance) Tracking Resistance (Comparative Tracking Index) CTI Isolation Group IIIa DIN IEC 112/VDE 0303 Part 1 Material Group (DIN VDE 0110, 1/89, Table 1) NOTE All Avago data sheets report the creepage and clearance inherent to the optocoupler component itself. These dimensions are needed as a starting point for the equipment designer when determining the circuit insulation requirements. However, once mounted on a printed circuit board, minimum creepage and clearance requirements must be met as specified for individual equipment standards. For creepage, the shortest distance path along the surface of a printed circuit board between the solder fillets of the input and output leads must be considered (the recommended Land Pattern does not necessarily meet the minimum creepage of the device). There are recommended techniques such as grooves and ribs which may be used on a printed circuit board to achieve desired creepage and clearances. Creepage and clearance distances will also change depending on factors such as pollution degree and insulation level. Table 3. Absolute Maximum Ratings Parameter Symbol Min. Max. Units Note Storage Temperature TS –55 125 °C Operating Temperature TA –40 105 °C Average Input Current IF(AVG) 25 mA Reverse Input Voltage VR 5 V “High” Peak Output Current IOH(PEAK) 2.5 A b “Low” Peak Output Current IOL(PEAK) 2.5 A b Total Output Supply Voltage (VCC – VEE) 35 V Input Current (Rise/Fall Time) tr(IN) / tf(IN) 500 ns Output Voltage VO(PEAK) VCC V Output IC Power Dissipation PO 800 mW c Total Power Dissipation PT 850 mW d 0 –0.5 a a. Derate linearly above 70°C free-air temperature at a rate of 0.3 mA/°C. b. Maximum pulse width = 10 ms. This value is intended to allow for component tolerances for designs with IO peak minimum = 2.0 A. See applications section for additional details on limiting IOH peak. c. Derate linearly above 85°C free-air temperature at a rate of –20 mW/ °C. d. Derate linearly above 85 °C free-air temperature at a rate of –21.25 mW/ °C. The maximum LED junction temperature should not exceed 125°C. Broadcom -4- ACNT-H313 Data Sheet Table 4. Recommended Operating Conditions Table 4. Recommended Operating Conditions Parameter Symbol Min Max. Units Operating Temperature TA –40 105 °C Output Supply Voltage (VCC – VEE) 15 30 V Input Current (ON) IF(ON) 7 12 mA Input Voltage (OFF) VF(OFF) –3.6 0.5 V Note Table 5. Electrical Specifications (DC) All typical values are at TA = 25°C, VCC – VEE = 30 V, VEE = Ground. All minimum and maximum specifications are at recommended operating conditions (TA = –40 to 105°C, IF(ON) = 7 to 12 mA, VF(OFF) = –3.6 to 0.8 V, VEE = Ground, VCC = 15 to 30 V), unless otherwise noted. Parameter High Level Peak Output Current Symbol IOH Min. 0.5 Typ. Max. 1.5 2.0 Low Level Peak Output Current IOL 0.5 2.0 2.0 Fig. A VO = VCC – 4 V 2, 3, 16 A VO = VCC – 15 V A VO = VEE + 2.5 V A VO = VEE + 15 V V IO = –100 mA 1, 3, 18 Note a b 5, 6, 17 a b VOH Low Level Output Voltage VOL 0.1 0.5 V IO = 100 mA 4, 6, 19 High Level Supply Current ICCH 2.5 5.0 mA Output Open, IF = 10 mA 7, 8 Low Level Supply Current ICCL 2.5 5.0 mA Output Open, VF = –3.6 to 0.8 V Threshold Input Current Low to High IFLH 1.0 5.0 mA IO = 0 mA, VO > 5 V Threshold Input Voltage High to Low VFHL 0.5 Input Forward Voltage VF 1.2 Temperature Coefficient of Input Forward Voltage VF/TA Input Reverse Breakdown Voltage BVR Input Capacitance CIN UVLO Threshold VUVLO+ 11.0 12.3 13.5 VUVLO- 9.5 10.7 12.0 UVLOHYS VCC – 3 Test Conditions High Level Output Voltage UVLO Hysteresis VCC– 4 Units c, d 9, 15, 20 V 1.45 1.8 –1.5 3 23 V IF = 10 mA mV/°C IF = 10 mA V IR = 100 μA pF f = 1 MHz, VF = 0 V V VO > 5 V, IF = 10 mA 21 1.6 a. Maximum pulse width = 50 ms. b. Maximum pulse width = 10 ms. This value is intended to allow for component tolerances for designs with IO peak minimum = 2.0 A. See applications section for additional details on limiting IOH peak. c. In this test, VOH is measured with a DC load current. When driving capacitive loads, VOH will approach VCC as IOH approaches zero amps. d. Maximum pulse width = 1 ms. Broadcom -5- ACNT-H313 Data Sheet Table 6. Switching Specifications (AC) Table 6. Switching Specifications (AC) All typical values are at TA = 25°C, VCC– VEE = 30 V, VEE = Ground. All minimum and maximum specifications are at recommended operating conditions (TA = –40 to 105°C, IF(ON) = 7 to 12 mA, VF(OFF) = –3.6 to 0.8 V, VEE = Ground, VCC = 15 to 30 V), unless otherwise noted. Parameter Symbol Min. Typ. Max. Units tPLH 0.10 0.28 0.50 μs Propagation Delay Time to Low Output Level tPHL 0.10 0.30 0.50 μs 0.30 μs 0.35 μs 0.20 μs Propagation Delay Time to High Output Level Test Conditions Fig. Rg = 10 , Cg = 10 nF, f = 10 kHz, Duty Cycle = 50%, IF = 7 mA to 12 mA, VCC = 15 V to 30 V 10, 11, 12, 13, 14, 22 Pulse Width Distortion PWD Propagation Delay Difference Between Any Two Parts PDD (tPHL – tPLH) Propagation Delay Skew tPSK Rise Time tR 0.10 μs Fall Time tF 0.10 μs UVLO Turn On Delay tUVLO ON 0.80 μs VO > 5 V, IF = 10 mA UVLO Turn Off Delay tUVLO OFF 0.60 μs VO < 5 V, IF = 10 mA –0.35 Note a b c 22 21 Output High Level Common Mode Transient |CMH| Immunity 40 50 kV/μs TA = 25 °C, IF = 10 mA, 23 VCM = 2000 V, VCC = 30 V d, e Output Low Level Common Mode Transient |CML| Immunity 40 50 kV/μs TA = 25 °C, VF = 0 V, VCM = 2000 V, VCC = 30 V d, f a. Pulse Width Distortion (PWD) is defined as |tPHL– tPLH| for any given device. b. The difference between tPHL and tPLH between any two ACNT-H313 parts under the same test condition. c. tPSK is equal to the worst-case difference in tPHL or tPLH that will be seen between units at any given temperature and specified test conditions. d. Pin 1 and 4 need to be connected to LED common. Split resistor network in the ratio 1.5:1 with 215 W at the anode and 140 W at the cathode. e. Common mode transient immunity in the high state is the maximum tolerable dVCM/dt of the common mode pulse, VCM, to assure that the output will remain in the high state (i.e., VO > 15.0 V). f. Common mode transient immunity in a low state is the maximum tolerable dVCM/dt of the common mode pulse, VCM, to assure that the output will remain in a low state (i.e., VO < 1.0 V). Broadcom -6- ACNT-H313 Data Sheet Table 7. Package Characteristics Table 7. Package Characteristics All typical values are at TA = 25°C. All minimum/maximum specifications are at recommended operating conditions, unless otherwise noted. Parameter Symbol Input-Output Momentary Withstand Voltagea VISO Input-Output Resistance RI-O Input-Output Capacitance Min. Typ. 7500 Max. Units Test Conditions Fig. Note VRMS RH < 50%, t = 1 min., TA = 25°C b c 1012  VI-O = 500 VDC c CI-O 0.5 pF f =1 MHz LED-to-Ambient Thermal Resistance R11 87 °C/W LED-to-Detector Thermal Resistance R12 23 Thermal Model in Application Notes below Detector-to-LED Thermal Resistance R21 30 Detector-to-Ambient Thermal Resistance R22 47 , d a. The Input-Output Momentary Withstand Voltage is a dielectric voltage rating that should not be interpreted as an input-output continuous voltage rating. For the continuous voltage rating, refer to your equipment level safety specification or Avago Technologies Application Note 1074, Optocoupler Input-Output Endurance Voltage. b. In accordance with UL1577, each optocoupler is proof tested by applying an insulation test voltage ≥ 9000 VRMS for 1 second (leakage detection current limit, II-O ≤ 5 μA). c. Device considered a two-terminal device: pins 1, 2, 3, and 4 shorted together and pins 5, 6, 7, and 8 shorted together. d. The device was mounted on a high conductivity test board as per JEDEC 51-7. Broadcom -7- ACNT-H313 Data Sheet Table 7. Package Characteristics Figure 1 VOH vs. Temperature Figure 2 IOH vs. Temperature 2 I F = 7 mA to 12 mA I OUT = -100 mA V CC = 15 V to 30 V V EE = 0 V -1 IOH - OUTPUT HIGH CURRENT - A (VOH - VCC) - OUTPUT HIGH VOLTAGE DROP - V 0 -2 -3 -4 -40 -20 0 20 40 T - TEMPERATURE - ˚C 60 80 1.2 -20 0 20 40 T - TEMPERATURE - ˚C 60 80 100 20 40 60 T - TEMPERATURE - ˚C 80 100 0.25 IF = 7 to 12 mA V CC = 15 to 30 V V EE = 0 V -2 105 °C 25 °C -40 °C -3 -4 -5 0 0.5 1 1.5 IOH - OUTPUT SUPPLY CURRENT - A 2 VF (OFF) = -3.6 to 0.8 V I OUT = 100 mA VCC = 15 V to 30 V VEE = 0 V 0.2 VOL - OUTPUT LOW VOLTAGE - V (VOH - VCC) - OUTPUT HIGH VOLTAGE DROP - V IF = 7 to 12 mA VOUT = (VCC - 4 V) VCC = 15 V to 30 V V EE = 0 V Figure 4 VOL vs. Temperature 0.15 0.1 0.05 0 2.5 Figure 5 IOL vs. Temperature -40 -20 0 Figure 6 VOL vs. IOL 4 5 V F (OFF) = - 3.6 V to 0.8 V V OUT = 2.5 V V CC = 15 V to 30 V V EE = 0 V 3 VOL - OUTPUT LOW VOLTAGE - V IOL - OUTPUT LOW CURRENT - A 1.4 1 -40 -1 2 1 0 1.6 100 Figure 3 IOH vs. VOH -6 1.8 -40 -20 0 20 40 T - TEMPERATURE - ˚C 60 80 Broadcom -8- 105 ˚C 25 ˚C 3 - 40 ˚C 2 1 0 100 V F (OFF) = -3.6 to 0.8 V V CC = 15 V to 30 V V EE = 0 V 4 0 0.5 1 1.5 IOL - OUTPUT LOW CURRENT - A 2 2.5 ACNT-H313 Data Sheet Table 7. Package Characteristics Figure 7 ICC vs. Temperature Figure 8 ICC vs. VCC 3.5 VCC = 30 V, VEE = 0 V IF = 10 mA for I CCH IF = 0 mA for I CCL 3 ICC - SUPPLY CURRENT - mA ICC - SUPPLY CURRENT - mA 3.5 ICCL ICCH 2.5 2 1.5 2.5 2 1.5 -40 -20 0 20 40 60 T - TEMPERATURE - ˚C 80 100 15 17 19 21 23 25 VCC - SUPPLY VOLTAGE - V 27 29 Figure 10 Propagation Delay s. VCC 3 500 V CC = 15 TO 30 V V EE = 0 V OUTPUT = OPEN 2.5 TP - PROPAGATION DELAY - ns IFLH - LOW TO HIGH CURRENT THRESHOLD - mA 3 ICCL ICCH Figure 9 IFLH vs. Temperature 2 1.5 1 IF = 10 mA T A = 25 °C Rg = 10 Ω , Cg = 10 nF DUTY CYCLE = 50% 400 300 200 tPHL tPLH 0.5 0 100 -40 -20 0 20 40 T - TEMPERATURE - ˚C 60 80 100 Figure 11 Propagation Delay vs. IF 15 17 19 21 23 25 VCC - SUPPLY VOLTAGE - V 27 29 Figure 12 Propagation Delay vs. Temperature 500 500 V CC = 30 V, V EE = 0 V Rg = 10 Ω, Cg = 10 nF T A = 25 °C DUTY CYCLE = 50% f = 10 kHz 400 350 450 TP - PROPAGATION DELAY - ns 450 TP - PROPAGATION DELAY - ns IF = 10 mA for I CCH IF = 0 mA for I CCL T A = 25 °C V EE = 0 V 300 250 200 tPHL tPLH 150 8 9 10 IF - FORWARD LED CURRENT - mA 11 350 300 250 200 tPHL tPLH 150 100 7 400 IF = 10 mA V CC = 30 V, V EE = 0 V Rg = 10 Ω, Cg = 10 nF DUTY CYCLE = 50% f = 10 kHz 100 -40 12 Broadcom -9- -20 0 20 40 60 T - TEMPERATURE - ˚C 80 100 ACNT-H313 Data Sheet Table 7. Package Characteristics Figure 13 Propagation Delay vs. Rg Figure 14 Propagation Delay vs. Cg 500 V CC = 30 V, V EE = 0 V T A = 25 °C IF = 10 mA , Cg = 10 nF DUTY CYCLE = 50% f = 10 kHz 400 TP - PROPAGATION DELAY - ns TP - PROPAGATION DELAY - ns 500 300 tPLH 200 tPHL 100 0 10 20 30 Rg - LOAD RESISTANCE - Ω 40 Figure 15 Transfer Characteristics 35 VO - OUTPUT VOLTAGE - V 30 25 20 15 10 5 0 0 0.5 1 1.5 2 IF - FORWARD CURRENT - mA 2.5 3 Figure 16 IOL Test Circuit I F = 7 to 12 mA 1 8 2 7 3 6 4 5 4 V Pulsed + _ I OH 0.1 PF 400 300 + _ VCC = 15 to 30 V Broadcom - 10 - tPHL tPLH 200 100 50 V CC = 30 V, V EE = 0 V T A = 25 °C IF = 10 mA Rg = 10 Ω DUTY CYCLE = 50% f = 10 kHz 0 20 40 60 Cg - LOAD CAPACITANCE - nF 80 100 ACNT-H313 Data Sheet Table 7. Package Characteristics Figure 17 IOH Test Circuit 1 8 2 7 3 6 4 5 IOL + _ 0.1 PF + _ VCC = 15 to 30 V 2.5 V Pulsed Figure 18 VOH Test Circuit I F = 7 to 12 mA 1 8 2 7 3 6 4 5 VOH 0.1 PF + _ VCC = 15 to 30 V + _ VCC = 15 to 30 V 100 mA Figure 19 VOL Test Circuit 1 8 2 7 100 mA VOL 3 6 4 5 0.1 PF + _ VCC = 15 to 30 V Figure 20 IFLH Test Circuit IF 1 8 2 7 3 6 4 5 VO > 5 V 0.1 PF Figure 21 ULVO Test Circuit IF = 10 mA 1 8 2 7 3 6 4 5 VO > 5 V 0.1 PF + _ VCC Broadcom - 11 - ACNT-H313 Data Sheet Table 7. Package Characteristics Figure 22 TPLH, tPHL, Tr and tf Test Circuit and Waveforms IF =10 mA , 10 kHz, 50% Duty Cycle 1 8 2 7 IF 6 4 5 tf 90% + _ 0.1 PF 10 : 3 tr VO VCC = 15 to 30 V 50% 10% VOUT 10 nF tPLH tPHL Figure 23 CMR Test Circuit and Waveforms 1 215 : 2 7 3 6 4 5 GV VCM = Gt 't VO 0.1 PF +_ VCC = 0V 't 15 to 30 V VOH VO SWITCH AT A: IF = 10 mA +_ +_ 5 V 140 : VCM 8 VO VCM = 2000 V SWITCH AT B: IF = 0 mA Broadcom - 12 - VOL ACNT-H313 Data Sheet Applications Information Applications Information Selecting the Gate Resistor (Rg) to Minimize IGBT Switching Losses Step 1: Calculate Rg minimum from the IOL peak specification. The IGBT and Rg in Figure 24 can be analyzed as a simple RC circuit with a voltage supplied by the ACNT-H313. Rg t VCC − VEE − VOL I OLPEAK 15 + 5 − 2 2.5 7. 2 : # 8 : The VOL value of 2 V in the previous equation is a conservative value of VOL at the peak current of 2.5 A (see Figure 6). At lower Rg values, the voltage supplied by the ACNT-H313 is not an ideal voltage step. This results in lower peak currents (more margin) than predicted by this analysis. When negative gate drive is not used VEE in the previous equation is equal to 0 V. Figure 24 ACNT-H313 Typical Application Circuit 1 8 RG 215: 2 +_ VCC = 15 V 7 Q1 0.1 PF 140: 3 6 4 5 +_ + HVDC + VEE = - 5 V Q2 VCE - 3-PHASE AC + VCE - - HVDC Step 2: Check the ACNT-H313 Power Dissipation and Increase Rg if necessary. The ACNT-H313 total power dissipation (PT ) is equal to the sum of the emitter power (PE) and the output power (PO). P T = PE + PO P E = IF • VF • DutyCycle ( ) P O = P O(BIAS) + P O(SWITCHING) = ICC • V CC + E SW R g , Q g • f PE Parameter PO Parameter Description Description IF LED current ICC Supply current VF LED-on voltage VCC Positive supply voltage Duty Cycle Maximum LED duty cycle VEE Negative supply voltage ESW(Rg,Qg) Energy dissipated in the ACNT-H313 for each IGBT switching cycle (see Figure 25) f Switching frequency Broadcom - 13 - ACNT-H313 Data Sheet Applications Information For the circuit in Figure 24 with IF (worst case) = 12 mA, Rg = 8 , Max Duty Cycle = 80%, Qg = 500 nC, f = 20 kHz and TA max = 85°C. PE = 12 mA • 1.8 V • 0.8 = 17.3 mW PO = 4.25 mA • 20 V + 5.2 PJ • 20 kHz = 85 mW + 104 mW = 189 mW < 800 mW (PO(MAX) @ 85qC) The value of 4.25 mA for ICC in the previous equation was obtained by derating the ICC max of 5 mA (which occurs at –40°C) to ICC max at 85°C (see Figure 7). Since PO for this case is smaller than PO(MAX), Rg of 8  can be used. Figure 25 Energy Dissipated in the ACNT-H313 for Each IGBT Switching Cycle Esw – ENERGY PER SWITCHING CYCLE – PJ 14 Qg = 100 nC Qg = 500 nC Qg = 1000 nC 12 10 VCC = 15 V VEE = -5 V 8 6 4 2 0 0 10 20 30 Rg – GATE RESISTANCE – W 40 50 Broadcom - 14 - ACNT-H313 Data Sheet Thermal Model Thermal Model Thermal Resistance Definitions: R11: Junction-to-Ambient Thermal Resistance of LED due to heating of LED R12: Junction-to-Ambient Thermal Resistance of LED due to heating of Detector (Output IC) R21: Junction-to-Ambient Thermal Resistance of Detector (Output IC) due to heating of LED °C/W R11 87 R12 23 R21 30 R22 47 R22: Junction-to-Ambient Thermal Resistance of Detector (Output IC) due to heating of Detector (Output IC) This thermal model assumes the device is soldered onto a high conductivity board as per JEDEC 51-7. The temperature at the LED and Detector junctions of the optocoupler can be calculated using the following equations: P1: Power dissipation of LED (W) T1 = (R11 × P1 + R12 × P2) + TA -- (1) P2: Power dissipation of Detector/Output IC (W) T2 = (R21 × P1 + R22 × P2) + TA -- (2) T1: Junction temperature of LED (°C) T2: Junction temperature of Detector (°C) TA: Ambient temperature Using the given thermal resistances and thermal model formula in this datasheet, we can calculate the junction temperature for both LED and the output detector. Both junction temperatures should be within the absolute maximum rating of 125°C. Ambient Temperature: Junction-to-Ambient Thermal Resistances were measured approximately 1.25 cm above optocoupler at ~23°C in still air. Related Documents AV02-0421EN Application Note 5336 Gate Drive Optocoupler Basic Design for IGBT / MOSFET AV02-3698EN Application Note 1043 Common-Mode Noise: Sources and Solutions AV02-0310EN Reliability Data Plastics Optocouplers Product ESD and Moisture Sensitivity Broadcom - 15 - For product information and a complete list of distributors, please go to our web site: www.broadcom.com. Broadcom, the pulse logo, Connecting everything, Avago Technologies, Avago, and the A logo are among the trademarks of Broadcom and/or its affiliates in the United States, certain other countries and/or the EU. Copyright © 2014–2016 by Broadcom. All Rights Reserved. The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries. For more information, please visit www.broadcom.com. Broadcom reserves the right to make changes without further notice to any products or data herein to improve reliability, function, or design. Information furnished by Broadcom is believed to be accurate and reliable. However, Broadcom does not assume any liability arising out of the application or use of this information, nor the application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. AV02-4249EN – October 7, 2016