NCP1075BAP130G

AC DC Converters, Offline Switchers Overview

The NCP1075BAP130G is an enhanced off-line switcher from onsemi, integrating a fixed-frequency current mode controller and a 700 V MOSFET. It operates at a switching frequency of 130 kHz with a maximum duty cycle of 72%. The device supports a supply voltage range of 6.9 V to 20 V and delivers up to 400 mA output current for isolated flyback topologies. It features dynamic self-supply (DSS) technology, eliminating the need for auxiliary windings in many applications. Key electrical parameters include a peak current limit of 400 mA and a quiescent operating current of 1.1 mA.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V MOSFET with a fixed-frequency current mode controller for high-density designs.
• Features dynamic self-supply (DSS) operation to simplify transformer design by removing auxiliary winding requirements.
• Includes comprehensive protection mechanisms such as timer-based short-circuit detection, overvoltage protection, and over-power protection.
• Supports frequency foldback and skip-cycle modes to maintain high efficiency under light-load conditions.

AC DC Converters, Offline Switchers Applications

• Adapters and chargers for mobile phones and portable devices
• Standby power supplies for consumer electronics
• General-purpose AC/DC conversion for low-power appliances

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for end-of-life notices, as this part may be subject to discontinuation. Ensure the PDIP-8 package variant matches your PCB footprint requirements before finalizing orders.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring a highly integrated solution without auxiliary windings. The 130 kHz frequency allows for smaller magnetic components compared to lower-frequency variants. Ensure the input voltage range and output current demands align with the specified 6.9–20 V supply and 400 mA limit respectively.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP1075A/B series of enhanced off-line switchers. It shares architectural similarities with other members like the NCP1075A but differs in switching frequency specifications. The series is designed for cost-effective, high-reliability power supplies in the consumer electronics sector.

AC DC Converters, Offline Switchers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer recommendations for potential obsolescence management if this component reaches end-of-life status.

AC DC Converters, Offline Switchers FAQ

Does the NCP1075BAP130G require an auxiliary winding?

No, it features dynamic self-supply (DSS) technology that eliminates the need for an auxiliary winding in most standard flyback configurations.

What is the switching frequency of this specific model?

The NCP1075BAP130G operates at a fixed switching frequency of 130 kHz.