FSD210HD

AC DC Converters, Offline Switchers Overview

The FSD210HD is a high-voltage current-mode PWM controller designed for offline flyback converters. It integrates a 700 V power MOSFET and an optimized control circuit to deliver efficient performance in low-cost, high-reliability applications. The device features a wide supply voltage range, allowing operation from the rectified line voltage without requiring a separate bias winding. Key operational characteristics include cycle-by-cycle current limiting, open-loop protection, thermal shutdown, and a built-in soft-start mechanism to reduce inrush current during startup.

AC DC Converters, Offline Switchers Feature Summary

• Integrated 700 V power MOSFET with optimized gate drive for reduced switching losses
• Wide operating supply voltage range enabling direct connection to rectified AC line
• Comprehensive protection suite including cycle-by-cycle current limit, thermal shutdown, and open-loop detection

AC DC Converters, Offline Switchers Applications

• Adapters and chargers for mobile phones and portable devices
• Low-power consumer electronics such as set-top boxes and televisions
• Battery chargers for cordless tools and appliances

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (e.g., G) against the manufacturer's datasheet to confirm RoHS compliance and halogen-free status. Ensure the package type matches the intended PCB footprint. Confirm that the component meets the required automotive or industrial reliability standards if applicable to the end product.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring a compact, cost-effective solution for isolated flyback topologies. The integrated MOSFET simplifies bill of materials and layout. Consider the thermal dissipation capabilities of the package when designing for higher power levels within the device's rated limits.

AC DC Converters, Offline Switchers Part Context

This part belongs to onsemi's family of high-voltage PWM controllers for offline power supplies. It is engineered to replace discrete solutions by combining the driver and power switch into a single IC. This integration reduces component count, board space, and assembly costs while maintaining high efficiency and reliability in standard flyback converter architectures.

AC DC Converters, Offline Switchers Replacement Considerations

Check for pin-compatible alternatives within the same series, such as the FSD200 or FSD210 variants, ensuring voltage ratings and current limits match the design requirements. Verify that any substitute maintains the same package outline and thermal characteristics.