{"product_id":"top257en","title":"TOP257EN","description":"\u003cp\u003eThe TOP257EN from Power Integrations is a TOPSwitch-HX isolated Flyback offline switcher with an integrated power switch. It delivers up to 157W, features a 700V breakdown rating, and switches at 66kHz or 132kHz with a 78% maximum duty cycle. Current limiting, over temperature, and over voltage protection support operation across a -40°C to 150°C junction temperature range in a 7-SSIP package with exposed pad.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIntegrated power switch reduces external component count and simplifies isolated flyback design.\u003c\/li\u003e\n\u003cli\u003e700V breakdown voltage provides margin for offline AC-DC operation.\u003c\/li\u003e\n\u003cli\u003eSupports up to 157W output power for higher-power adapters and supplies.\u003c\/li\u003e\n\u003cli\u003eDual 66kHz\/132kHz switching options and 78% max duty cycle aid compact magnetics.\u003c\/li\u003e\n\u003cli\u003eWide -40°C to 150°C junction temperature range with exposed-pad package for thermal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIsolated Flyback Power Supplies\u003c\/h3\u003e\u003cp\u003eThe TOP257EN's Flyback topology and isolated output suit offline AC-DC supplies, with a 700V breakdown rating and integrated switch simplifying high-voltage design.\u003c\/p\u003e\u003ch3\u003eHigher-Power Adapters and Chargers\u003c\/h3\u003e\u003cp\u003eSupporting up to 157W, this TOPSwitch-HX device fits adapters and chargers requiring substantial output, with 66kHz\/132kHz switching and 78% max duty cycle enabling compact magnetics.\u003c\/p\u003e\u003ch3\u003eIndustrial and Appliance Power\u003c\/h3\u003e\u003cp\u003eCurrent limiting, over temperature, and over voltage protection help safeguard isolated flyback designs in industrial controls and appliances.\u003c\/p\u003e\u003ch3\u003eThermally Demanding Designs\u003c\/h3\u003e\u003cp\u003eWith a -40°C to 150°C junction temperature range and an exposed-pad 7-SSIP package, the TOP257EN supports reliable operation in demanding thermal environments.\u003c\/p\u003e\u003ctable\u003e\n\u003ccolgroup\u003e\u003ccol\u003e\u003c\/colgroup\u003e \u003ctbody\u003e \u003ctr\u003e \t\u003ctd\u003eProduct attributes\u003c\/td\u003e \t\u003ctd\u003eProperty Value\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eManufacturer\u003c\/td\u003e \t\u003ctd\u003ePower Integrations\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProduct Series\u003c\/td\u003e \t\u003ctd\u003eTOPSwitch®-HX\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackaging\u003c\/td\u003e \t\u003ctd\u003eTube | \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eOutput Isolation\u003c\/td\u003e \t\u003ctd\u003eIsolated\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eInternal Switch(s)\u003c\/td\u003e \t\u003ctd\u003eYes\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eVoltage - Breakdown\u003c\/td\u003e \t\u003ctd\u003e700V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eTopology\u003c\/td\u003e \t\u003ctd\u003eFlyback\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eVoltage - Start Up\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eVoltage - Supply (Vcc\/Vdd)\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eDuty Cycle\u003c\/td\u003e \t\u003ctd\u003e78%\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eFrequency - Switching\u003c\/td\u003e \t\u003ctd\u003e66kHz, 132kHz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePower (Watts)\u003c\/td\u003e \t\u003ctd\u003e157 W\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eFault Protection\u003c\/td\u003e \t\u003ctd\u003eCurrent Limiting, Over Temperature, Over Voltage\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eControl Features\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eOperating Temperature\u003c\/td\u003e \t\u003ctd\u003e-40°C ~ 150°C (TJ)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eGrade\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eQualification\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eMounting Type\u003c\/td\u003e \t\u003ctd\u003eThrough Hole\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackage \/ Case\u003c\/td\u003e \t\u003ctd\u003e7-SSIP, 6 Leads, Exposed Pad, Formed Leads\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eSupplier Device Package\u003c\/td\u003e \t\u003ctd\u003eeSIP-7C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e   \u003ctd\u003eROHS\u003c\/td\u003e   \u003ctd\u003e\u003cimg class=\"ROSHICON\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0910\/9756\/3425\/files\/ROHSICON.png?v=1761919810\"\u003e\u003c\/td\u003e  \u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cdl\u003e\n\u003cdt\u003eQ: What topology does the TOP257EN use?\u003c\/dt\u003e\n\u003cdd\u003eA: It is a Flyback switcher for isolated offline power supplies.\u003c\/dd\u003e\n\u003cdt\u003eQ: Does it include an integrated switch?\u003c\/dt\u003e\n\u003cdd\u003eA: Yes, the power switch is integrated, reducing external component count.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the breakdown voltage rating?\u003c\/dt\u003e\n\u003cdd\u003eA: The device has a 700V breakdown voltage rating.\u003c\/dd\u003e\n\u003cdt\u003eQ: What power level does it support?\u003c\/dt\u003e\n\u003cdd\u003eA: It supports up to 157W of output power.\u003c\/dd\u003e\n\u003cdt\u003eQ: What switching frequency does it use?\u003c\/dt\u003e\n\u003cdd\u003eA: It operates at 66kHz or 132kHz with a maximum duty cycle of 78%.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Power Integrations","offers":[{"title":"Default Title","offer_id":51117035258145,"sku":"TOP257EN","price":1.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0910\/9756\/3425\/files\/IC_ACDCCOS_596_PI-4917_E_6_7fdc0d01-0b98-4c1e-b1ac-967bb46d58ad.jpg?v=1743666901","url":"https:\/\/hqickey.com\/de\/products\/top257en","provider":"HQICKEY","version":"1.0","type":"link"}