NCP1217AD100R2G

AC DC Converters, Offline Switchers Overview

The NCP1217AD100R2G is an enhanced PWM current-mode controller designed for high-performance offline flyback converters. It operates at a fixed switching frequency of 100kHz and supports a maximum duty cycle of 50%. The device features a supply voltage range of 7.6V to 16V with a startup threshold of 12.8V. It is housed in an 8-SOIC package and offers comprehensive protection against overloads, short circuits, and over-temperature conditions. The component is rated for junction temperatures up to 150°C.

AC DC Converters, Offline Switchers Feature Summary

• Enhanced PWM current-mode control architecture for improved transient response
• Integrated protection mechanisms including overload, short-circuit, and thermal shutdown
• Fixed 100kHz switching frequency optimized for compact transformer design

AC DC Converters, Offline Switchers Applications

• Offline flyback power supplies
• AC-DC converter modules
• General-purpose isolated power conversion

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'A' in the part number NCP1217AD100R2G against official onsemi documentation to confirm exact electrical tolerances and revision status. Cross-reference with the latest datasheet to ensure compatibility with target application requirements, as component specifications may evolve. Confirm availability status through authorized distributors, noting that some variants may be subject to lifecycle changes or obsolescence notices.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for applications requiring precise current-mode regulation in flyback topologies. Ensure the input voltage range aligns with the 7.6V to 16V Vcc specification. Consider the 100kHz fixed frequency when designing magnetic components for size and efficiency constraints. Verify that the 50% maximum duty cycle meets the required output voltage and input line range without violating minimum off-time requirements.

AC DC Converters, Offline Switchers Part Context

The NCP1217 series represents onsemi's family of enhanced PWM current-mode controllers for offline applications. This specific model, NCP1217AD100R2G, is part of the standard lineup offering robust protection features and fixed-frequency operation. It serves as a core component in isolated power supply designs where reliability and performance are critical.

AC DC Converters, Offline Switchers Replacement Considerations

Public confirmed substitute part numbers: NCP1217D100R2G.