The TLP293 from Toshiba is a 3750Vrms photocoupler in a SO6L package with a GaAIA LED and photo-transistor detector, 50mA CTR, and 110C operating temperature for industrial isolation.<\/p>\n
| \u062c\u0647\u062f \u0627\u0644\u0639\u0632\u0644<\/td>\n | 3750 Vrms (min)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| LED Type<\/td>\n | GaAIA (gallium aluminum arsenide)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| Detector<\/td>\n | Photo-transistor<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| CTR (Current Transfer Ratio)<\/td>\n | 50% (min) @ IF=5mA<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| LED Forward Current<\/td>\n | 50 mA (max)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| LED Forward Voltage<\/td>\n | 1.3V (typ @ IF=5mA)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| Collector Current<\/td>\n | 50 mA (max)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| Collector-Emitter Voltage<\/td>\n | 80V<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| Bandwidth (Cutoff)<\/td>\n | -3dB @ 80kHz (typ, RL=1kOhm)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| \u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n | SO6L (4-pin, 3.7 x 4.6mm, wide creepage)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||
| \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n | -55 to +110 C<\/td>\n<\/tr>\n<\/table>\n\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\nProduct Overview The TLP293 from Toshiba is a 3750Vrms photocoupler in a SO6L package with a GaAIA LED and photo-transistor detector, 50mA CTR, and 110C operating temperature for industrial isolation. Key Specifications Isolation Voltage 3750 Vrms (min) LED Type GaAIA (gallium aluminum arsenide) Detector Photo-transistor CTR (Current Transfer Ratio) 50% (min) @ IF=5mA LED Forward […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[36,13],"tags":[],"chip_brand":[169],"class_list":["post-3786","post","type-post","status-publish","format-standard","hentry","category-gate-driver-ics","category-integrated-circuits-ics","chip_brand-toshiba"],"acf":{"brief_explanation":"3750Vrms photocoupler, 50% CTR, GaAIA LED, SO6L, industrial grade","date_code":"","package_case":"SO6L (3.7 x 4.6 x 2.3 mm, >5mm creepage\/clearance)","in_stock":5607,"datasheet":"https:\/\/toshiba-semicon-storage.com\/cn\/semiconductor\/product\/optoelectronics\/detail.TLP293.html","price":"$0.35 @ 1ku","product_introduction":"The TLP293 from Toshiba is a 3750Vrms isolation voltage photocoupler in a compact SO6L surface-mount package with a gallium aluminum arsenide (GaAIA) infrared LED and a silicon NPN photo-transistor detector. The GaAIA LED technology provides superior long-term reliability compared to conventional GaAs LEDs, with lower light output degradation over time, ensuring stable current transfer ratio (CTR) throughout the device lifetime. The 50% minimum CTR at IF=5mA ensures reliable signal transfer even at low LED drive currents, making the TLP293 suitable for low-power isolation applications. The SO6L package provides a creepage distance of greater than 5mm, meeting the safety requirements for reinforced isolation in industrial and appliance applications per IEC 60747-5-5 and UL 1577. The 3750Vrms isolation rating provides a safety barrier between high-voltage circuits (mains-connected) and low-voltage logic circuits. The 80V collector-emitter voltage rating is adequate for most logic-level output interfaces. The -55 to +110C operating temperature range covers industrial and consumer applications. The TLP293 is commonly used for signal isolation in switch-mode power supplies (feedback loop isolation), programmable logic controller (PLC) digital I\/O, motor drive control signal isolation, and appliance safety isolation barriers.","working_principle":"The TLP293 operates as an optically-coupled isolator using a GaAIA LED and photo-transistor. Key subsystems include: (1) GaAIA LED - when forward current flows through the LED (pins 1-2), infrared photons are emitted; the GaAIA (gallium aluminum arsenide) material provides higher quantum efficiency and better long-term stability than conventional GaAs LEDs; the forward voltage is approximately 1.3V at 5mA; (2) Optical Coupling - the infrared photons travel across the transparent insulation die (typically silicone or polyimide) between the LED and the photo-transistor; the dielectric strength of this insulation provides the 3750Vrms isolation rating; the coupling efficiency determines the CTR; (3) Photo-Transistor - the infrared photons strike the base region of the NPN photo-transistor, generating base current proportional to the light intensity; this photo-current is amplified by the transistor beta, producing a collector current; the CTR (IC\/IF) of 50% minimum at IF=5mA means that 2.5mA of collector current is guaranteed when 5mA flows through the LED; (4) Signal Isolation - the input (LED) and output (photo-transistor) are electrically isolated; the only coupling mechanism is optical; this prevents ground loops, provides level shifting between voltage domains, and ensures safety isolation between high-voltage and low-voltage circuits; (5) Speed - the photo-transistor has a relatively slow response (bandwidth approximately 80kHz) due to the Miller capacitance and base storage effects; for faster applications, a pin photodiode or logic-output coupler should be used.","pin_description":"
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