NCP1611BDR2G

Overview

The NCP1611BDR2G is a Power Factor Correction (PFC) controller manufactured by onsemi, designed for cost-effective power factor correction applications. It operates within a supply voltage range of 9.5V to 35V and supports a wide operating temperature range from -40°C to +125°C. The device utilizes Current Control Frequency Foldback (CCFF) and Critical Conduction Mode (CRM) techniques to optimize efficiency across varying load conditions. Packaged in an 8-SOIC surface-mount format with a width of 3.90mm, it features a low startup current of 20 µA, contributing to reduced standby power consumption in end systems.

Feature Summary

• Implements Current Control Frequency Foldback (CCFF) and Critical Conduction Mode (CRM) control strategies for optimized performance.
• Supports operation over a wide supply voltage range from 9.5V to 35V.
• Designed for high-temperature reliability with an extended operating range up to +125°C.

Applications

• Power factor correction controllers for AC-DC power supplies
• Cost-effective PFC solutions for consumer electronics
• Industrial power supply designs requiring CRM operation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure compatibility with required packaging options such as Reel or Cut Tape. Confirm that the component status is Active for new designs, as availability may vary by region. Cross-reference the SOIC-8 package dimensions with your PCB footprint library to prevent assembly errors during manufacturing integration.

Selection Notes

Select this component when designing PFC stages that benefit from the efficiency advantages of Critical Conduction Mode combined with frequency foldback at light loads. Ensure the input supply voltage remains within the specified 9.5V to 35V window for proper controller initialization. Consider the thermal dissipation capabilities of the SOIC-8 package relative to the expected power loss under maximum load conditions.

Part Context

This part belongs to the NCP161x series of power factor controllers from onsemi, which are engineered for high-performance, low-cost PFC applications. The series focuses on reducing system costs while maintaining compliance with global energy efficiency standards through advanced control modes like CCFF and CRM.

Replacement Considerations

Consult the official onsemi documentation for qualified pin-to-pin replacements within the NCP16xx family. Verify functional equivalence regarding control mode and voltage specifications before substituting any alternative components in existing designs.

FAQ

What control modes does the NCP1611BDR2G support?

The NCP1611BDR2G supports Current Control Frequency Foldback (CCFF) and Critical Conduction Mode (CRM) for efficient power factor correction.

What is the recommended operating temperature range?

The device is rated for an operating temperature range from -40°C to +125°C.