NCP1618HDR2G

Overview

The NCP1618HDR2G is a high-voltage multimode power factor correction controller from onsemi, designed for efficient AC-DC conversion. It operates with a switching frequency of 130 kHz and supports a supply voltage range from 9.5V to 35V. The device features a 10-pin SOIC package and functions within an operating temperature range of -40°C to 125°C. Key electrical parameters include a startup supply current of 4mA, a maximum source current of 500mA, and a maximum reverse current of 800mA. It integrates active X2 line filtering capabilities and transitions between continuous conduction mode (CCM) and critical conduction mode (CrM).

Feature Summary

• Multimode operation enabling natural transition between CCM and CrM for optimized efficiency across load ranges.
• Integrated active X2 line filtering functionality to reduce electromagnetic interference.
• Comprehensive protection suite including soft overvoltage, fast overvoltage, line-sag detection, brown-out detection, two-level overcurrent detection, and bulk under-voltage protection.

Applications

• High-efficiency power factor correction in AC-DC power supplies.
• Consumer electronics requiring compliant power factor correction.
• Industrial power systems utilizing multimode PFC strategies.

Procurement Notes

Verify the specific suffix 'HDR2G' against official onsemi documentation to confirm pinout compatibility and thermal characteristics. Ensure the selected variant matches the required switching frequency specifications, as other NCP1618 variants may operate at different frequencies such as 65 kHz. Confirm RoHS compliance status directly with the manufacturer's latest datasheet before integration into production designs.

Selection Notes

Select this component when designing systems requiring high-voltage input handling and multimode PFC control. The 10-pin SOIC package suits surface-mount applications with moderate space constraints. Consider the 35V maximum supply voltage limit and the wide operating temperature range for harsh environments. Evaluate the integrated protection features against system safety requirements to minimize external component count.

Part Context

The NCP1618HDR2G belongs to the NCP1618 series of power factor controllers by onsemi. This series is engineered for high-performance AC-DC conversions, offering advanced multimode control to enhance efficiency. The part is distinct from lower-frequency variants within the same family, specifically tailored for applications demanding higher switching speeds and robust line regulation capabilities.

Replacement Considerations

Direct substitutes within the NCP1618 family must be verified for identical switching frequencies and pin configurations. Variants like NCP1618CDR2G or NCP1618KDR2G may differ in operational modes or frequency settings. Cross-reference datasheets to ensure functional equivalence regarding protection thresholds and supply voltage ranges before substitution.

FAQ

What is the primary advantage of the multimode operation in the NCP1618HDR2G?

The multimode operation allows the controller to naturally transition between Continuous Conduction Mode (CCM) and Critical Conduction Mode (CrM), optimizing efficiency across varying load conditions.

Does the NCP1618HDR2G include line filtering features?

Yes, it includes active X2 line filtering functionality to help reduce electromagnetic interference in the power supply design.