Power Integrations InnoSwitch™3-EP ICs
Power Integrations InnoSwitch™3-EP ICs simplify the design and build of flyback power converters, mainly those requiring high efficiency and compact size. The InnoSwitch3-EP family incorporates primary and secondary controllers and safety-rated feedback into a single IC.
The Power Integrations InnoSwitch3-EP ICs combine numerous protection features, including line over and undervoltage protection, output overvoltage and over-current limiting, and over-temperature shutdown. The devices have standard and peak power delivery options and commonly used auto-restart protection actions.
Features
- Highly integrated, compact footprint
- High efficiency across the load range
- PowiGaN™ technology, up to 100W without heat sinks
- Multi-mode Quasi-Resonant (QR) / CCM flyback controller, high voltage switch, secondary-side sensing and synchronous rectification driver
- Excellent multi-output cross-regulation with weighted Secondary-Side Regulation (SSR) feedback and synchronous FETs
- Integrated FluxLink™, HIPOT-isolated feedback link
- Exceptional CV/CC accuracy, independent of external components
- Adjustable, accurate output current sense using an external resistor
- Advanced protection/safety
- Open SR FET-gate detection
- Fast input line UV/OV protection
- Auto-restart fault response for output OVP
- 725V and 750V switches for excellent surge withstand
- 900V and 1700V switch for industrial design or extra safety margin
- EcoSmart™, energy efficient
- Less than 30mW no-load, including line sense
- Easily meets all global energy efficiency regulations
- Optional features
- Output UV protection
- With auto-restart peak power delivery
- Full safety and regulatory compliance
- Reinforced isolation
- Isolation voltage of >4000VAC
- 100% production HIPOT tested
- UL1577 isolation voltage 4000VAC (maximum), TUV (EN62368-1), CQC (GB4943.1), and DIN EN IEC 60747-17 (VDE 0884-17) safety approved
- Excellent noise immunity enables designs that achieve class “A” performance criteria for EN61000-4 suite; EN61000-4-2, 4-3 (30V/m), 4-4, 4-5, 4-6, 4-8 (100A/m) and 4-9 (1000A/m)
- Green package, Halogen-free, and RoHS-compliant
Applications
- Auxiliary, standby, and bias power supplies for appliances, computers, and consumer products
- Utility meters, smart grid, and industrial power supplies
Resources
- Product Brief
- 1250V/1700V PowiGaN for 800VDC AI Data Center Architecture Whitepaper
- Power Integrations Details 1250V and 1700V PowiGaN Technology for Next-Generation 800VDC AI Data Centers Press Release
- NVIDIA, Partners Drive Next-Gen Efficient Gigawatt AI Factories in Buildup for Vera Rubin Article
Videos
Normalized Primary Current vs. Frequency
Typical Application Schematic
Primary Controller Block Diagram
Secondary Controller Block Diagram
Associated Products
Power Integrations InnoSwitch™3 with PowiGaN™ ICs
Incorporates primary & secondary controllers, with sense elements and FluxLink™ into a single IC.
Power Integrations InnoSwitch ICs
Incorporates both primary and secondary controllers with sense elements into a single IC.
Development Tools
Power Integrations RDK-1053 60W Dual-Output Flyback Power Supply
Utilizes the advanced InnoMux™ IMX2353F mixed-signal IC and PowiGaN™ technology.