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Power Integrations Incorporates Lossless Zero-Cross Detection and X-Capacitor Discharge into New LinkSwitch-TNZ Offline Switcher ICs
LinkSwitch-TNZ compact switcher reduces component count, addresses smart home and appliance applications SAN JOSE, Calif.--(BUSINESS WIRE)-- Power
About this update from Power Integrations, Inc.
[{"type":"text","content":"\nLinkSwitch-TNZ compact switcher reduces component count, addresses smart home and appliance applications \n\n SAN JOSE, Calif.--(BUSINESS WIRE)--\nPower Integrations (Nasdaq: POWI), the leader in high-voltage integrated circuits for energy-efficient power conversion, today announced LinkSwitch™-TNZ, a new switching power supply IC that combines offline power conversion, lossless zero-cross detection and, optionally, X-capacitor discharge functions in a compact SO-8C package. The highly efficient LinkSwitch-TNZ IC can be used for non-isolated buck and buck-boost power supplies up to 575 mA output current and provides up to 12 W output for universal-input isolated flyback designs.\nThis press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20210616005330/en/Power Integrations Incorporates Lossless Zero-Cross Detection and X-Capacitor Discharge into New LinkSwitch-TNZ Offline Switcher ICs. LinkSwitch-TNZ compact switcher reduces component count, addresses smart home and appliance applications. (Photo: Business Wire)\nAdnaan Lokhandwala, product marketing manager at Power Integrations said: “The new LinkSwitch-TNZ ICs provide an accurate signal indicating that the sinusoidal AC line is at zero volts. This signal is used by smart home and building automation (HBA) products and appliances to control the switching of relays, IGBTs and TRIACs to minimize switching stress and system in-rush current. LinkSwitch-TNZ’s detection of the zero-cross point consumes less than 5 mW, allowing systems to reduce standby power losses versus alternative approaches that require ten or more discrete components and burn 50 to 100 mW of continuous power.”\n\nNote to editors: You can view a video overview of the LinkSwitch-TNZ IC here.\n\nDevices such as light switches, dimmers, sensors, and plugs connect and disconnect the AC line periodically using a relay or TRIAC. A discrete circuit is typically implemented to detect the AC line zero-crossing to control the turn-on transition of the main power device while reducing switching losses and in-rush current. This approach requires many components and is very lossy, consuming almost half of the standby power budget in some cases. Similarly, appliances often use a discrete zero-cross detection circuit to control motor and MCU timing. These applications also req...