NCP1680AAD1R2G

Overview

The NCP1680AAD1R2G is a mixed-signal integrated circuit designed as a Totem Pole Critical Conduction Mode (CRM) Power Factor Correction controller. Manufactured by onsemi, this device supports variable switching frequencies ranging from 25 kHz to 275 kHz. It operates with a maximum supply voltage of 30 V and utilizes a 16-SOIC package. The component is AEC-Q100 qualified for automotive applications and complies with RoHS standards.

Feature Summary

• Enables bridgeless Totem Pole PFC topology to eliminate input diode bridges and improve efficiency
• Provides code-less control solution without requiring microcontroller programming
• Integrates digital voltage loop compensation to simplify design and reduce external components
• Features proprietary current sensing scheme with per-cycle current limiting without Hall effect sensors

Applications

• Offline power supplies
• Industrial power systems
• Telecommunications 5G power infrastructure
• Network equipment power sources
• UHD television power supplies

Procurement Notes

Verify the specific suffix 'A' indicates the correct variant within the NCP1680 family. Confirm that the 'D1R2G' designation aligns with the required packaging and tape/reel specifications. Ensure the procurement channel provides valid traceability documentation for automotive-grade components. Cross-reference the manufacturer's latest product change notices to confirm material composition and assembly location consistency.

Selection Notes

Select this component when designing high-efficiency offline power supplies requiring bridgeless Totem Pole PFC topologies. It is suitable for applications demanding variable frequency operation between 25 kHz and 275 kHz. Choose this IC for designs needing integrated digital voltage loop compensation to minimize external passive components. Consider this part for automotive or industrial environments requiring AEC-Q100 qualification.

Part Context

The NCP1680 series serves as a dedicated controller for Totem Pole PFC applications, addressing the complexity of traditional designs. Unlike general-purpose controllers, it offers a specialized mixed-signal approach that removes the need for MCU-based coding. This allows designers to achieve high performance in compact spaces while meeting stringent energy efficiency regulations across various load conditions.

Replacement Considerations

NCP1680ABD1R2G