NCP1615C4DR2G

Overview

The NCP1615C4DR2G is a high-voltage power factor correction controller from onsemi, designed for driving PFC boost stages. It utilizes Current Control Frequency Foldback (CCFF) technology to optimize efficiency across the entire load range. The device integrates a high-voltage startup circuit with under-voltage detection, eliminating external startup components and enabling low standby power consumption. Key operational features include Zero-Crossing Skip Cycle mode for improved light-load efficiency, fast line/load transient compensation, and valley switching to minimize MOSFET turn-on losses. It provides robust gate drive capability of -500 mA/+800 mA and operates within a wide Vcc range of 9.5 V to 30 V.

Feature Summary

• Integrates high-voltage startup circuit with under-voltage detection for reduced component count and low standby power
• Employs Current Control Frequency Foldback (CCFF) method to optimize PFC stage efficiency across all loads
• Features Zero-Crossing Skip Cycle mode to enhance efficiency near AC input zero-crossings
• Supports valley switching operation to reduce MOSFET switching losses

Applications

• PC power supplies
• Offline appliances
• LED drivers
• Flat panel televisions

Procurement Notes

Verify the specific suffix 'C4' against official onsemi documentation to confirm pinout compatibility and functional parameters, as variations exist within the NCP1615 family. Confirm RoHS compliance status via the manufacturer's current product compliance database. Ensure the SOIC-16 package type matches your PCB footprint requirements. Cross-reference the datasheet revision date to ensure alignment with your design specifications.

Selection Notes

Select this component for applications requiring high efficiency in both full-load and light-load conditions. The integrated high-voltage startup simplifies bill of materials by removing external resistors. Consider the CCFF feature if system efficiency at partial loads is a critical performance metric. Ensure the design accommodates the SOIC-16 package dimensions and thermal requirements for the intended operating environment.

Part Context

This part belongs to the NCP1615 series of high-voltage PFC controllers. It shares core architectural similarities with variants like the NCP1615C5DR2G but may differ in specific electrical characteristics or pin configurations defined by the 'C4' suffix. The series is positioned for cost-effective, reliable power factor correction in consumer and industrial electronics.

Replacement Considerations

Direct substitutes within the same family include NCP1615C5DR2G, though verification of the 'C4' vs 'C5' suffix differences is required. Check for updated revisions such as NCP1615CDR2G. Ensure any replacement maintains the SOIC-16 package and compatible control logic.