{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER17HD","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER17HD","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER17HD","factsUrl":"https://icboms.com/api/mcp/products/VIPER17HD","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPer™ plus series, VIPER17HD, offline flyback converter with 800V avalanche-rugged MOSFET, 115kHz switching frequency, 10W output power, 16-SOIC package.","salesMarkdown":"## 800 V avalanche-rugged MOSFET — the offline flyback anchor The VIPER17HD is an offline flyback converter from STMicroelectronics' VIPer™ plus series, integrating an 800 V avalanche-rugged power MOSFET and a PWM controller in a single 16-SOIC package. It targets universal-input AC-DC power supplies up to 10 W output, where the 800 V breakdown provides adequate derating margin for 85–265 VAC rectified bus voltages, including surge transients. ## 115 kHz switching — transformer sizing and EMI planning The fixed 115 kHz switching frequency sits below the 150 kHz conducted EMI test band, simplifying the input filter design compared to higher-frequency controllers. At 115 kHz, the flyback transformer can be smaller than a 60 kHz design, which helps fit the 10 W output into a compact footprint. The 70 % maximum duty cycle supports a wide input-voltage range typical of universal offline supplies. ## 10 W in a 16-SOIC — thermal budget is the real limit The 10 W power rating is the practical output ceiling for this 16-SOIC (3.90 mm width) package without an exposed pad. The junction temperature range extends to 150 °C, but the designer must account for the thermal resistance of the SO-16 package — adequate copper area on the PCB and airflow are needed to keep the junction within limits at full load. The integrated 800 V MOSFET eliminates the external switch, saving board space but concentrating the heat in one device. ## Protection set and supply range Built-in fault protection covers current limiting, over-temperature, and over-voltage — the three failure modes most common in flyback converters. The Vcc supply range is 8.5 V to 23.5 V, with a 14 V start-up threshold that allows direct operation from the rectified DC bus through a startup resistor. Output isolation is supported, so the part can be used in both isolated and non-isolated topologies.","metaTitle":"VIPER17HD STMicro VIPer™ plus Flyback Converter, 800V, 10W","metaDescription":"VIPER17HD from STMicroelectronics VIPer™ plus series. 800V breakdown, 115kHz flyback PWM, 10W output, 16-SOIC.","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":"70%","Mounting Type":"Surface Mount","Power (Watts)":"10 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":"VIPER17","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":"$1.1500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/10813e496e0dc55a364bb0ce1c5951b7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER17HD/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER17HD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER17HD 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}}