{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER27HD","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER27HD","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER27HD","factsUrl":"https://icboms.com/api/mcp/products/VIPER27HD","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPer™ plus VIPER27HD flyback switching regulator, 20 W output power, 800 V breakdown voltage, 115 kHz switching frequency, 80% duty cycle, isolated topology, SOIC-16 package, -40°C to 150°C junction temperature.","salesMarkdown":"## 20 W flyback with 800 V avalanche-rugged MOSFET The STMicroelectronics VIPER27HD is a monolithic flyback switching regulator from the VIPer™ plus family, integrating an 800 V avalanche-rugged power MOSFET and a PWM controller in a single 16-SOIC package. It delivers up to 20 W in an isolated flyback topology, switching at 115 kHz with an 80% maximum duty cycle. Built-in fault protections cover current limiting, over-temperature, and over-voltage — the over-voltage protection answers a common design-in question directly. ## Supply range and start-up behaviour The Vcc supply range is 8.5 V to 23.5 V, with a start-up threshold of 14 V. This wide range accommodates the auxiliary winding voltage variation across load and line, simplifying the bias supply design. The narrow body keeps the footprint compact for dense PCB layouts in adapter and auxiliary supply designs.","metaTitle":"VIPER27HD STMicroelectronics Flyback Converter, 20 W, 800 V","metaDescription":"STMicroelectronics VIPER27HD flyback switching regulator, 20 W output, 800 V breakdown, 115 kHz switching, active lifecycle, SOIC-16.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","Series":"VIPer™ plus","Package":"Tube","Topology":"Flyback","Duty Cycle":"80%","Mounting Type":"Surface Mount","Power (Watts)":"20 W","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Fault Protection":"Current Limiting, Over Temperature, Over Voltage","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"14 V","Base Product Number":"VIPER27","Voltage - Breakdown":"800V","Frequency - Switching":"115kHz","Operating Temperature":"-40°C ~ 150°C (TJ)","Supplier Device Package":"16-SO","Voltage - Supply (Vcc/Vdd)":"8.5V ~ 23.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/75c7e60c0e317137dbd262cced343818.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER27HD/alternatives.json"},"ai":{"faq":[{"question":"Does VIPER27HD have overvoltage protection?","answer":"Yes, the VIPER27HD includes over-voltage protection as one of its built-in fault protections, along with current limiting and over-temperature shutdown."},{"question":"What is the maximum duty cycle and output power rating of VIPER27HD?","answer":"The maximum duty cycle is 80%, and the output power rating is 20 W in an isolated flyback topology."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER27HD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER27HD when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}