NCP1653APG

Overview

The NCP1653APG is a compact, fixed-frequency Power Factor Correction (PFC) controller designed for Continuous Conduction Mode (CCM) boost circuits. Manufactured by onsemi, this component integrates essential control functions to optimize power efficiency in AC-DC conversion systems. It operates within a frequency range of 60.3kHz to 73.7kHz and utilizes an 8-pin PDIP package. The device supports follower boost operation and includes features for input voltage sensing and current limiting.

Feature Summary

• Supports Continuous Conduction Mode (CCM) PFC boost applications
• Fixed-frequency operation with integrated oscillator
• Compact design suitable for space-constrained power supplies

Applications

• AC-DC power factor correction stages
• Follower boost converter circuits
• General-purpose power supply designs requiring CCM operation

Procurement Notes

Verify the specific suffix 'PG' indicates the PDIP package variant when sourcing. Confirm the revision level against the latest onsemi datasheet to ensure compatibility with required pinouts and electrical characteristics. Cross-reference the manufacturer part number to avoid confusion with tape-and-reel variants such as the ADR2G suffix.

Selection Notes

Select this component for applications requiring a simple, fixed-frequency CCM PFC solution. Ensure the design accommodates the specified operating frequency range. Verify that the 8-pin PDIP package meets the thermal and mechanical requirements of the target enclosure. Compare against interleaved or boundary mode controllers if higher power density or lower ripple is required.

Part Context

The NCP1653 series belongs to onsemi's portfolio of PFC controllers. The NCP1653APG specifically denotes the leaded PDIP package version, distinct from surface-mount options like the NCP1653ADR2G. This family targets cost-sensitive, medium-power applications where fixed-frequency operation simplifies filter design.

Replacement Considerations

Direct substitutes include other CCM PFC controllers from onsemi or competitors such as Texas Instruments UCC28019. Verify pin compatibility and control loop stability before substitution. Note that package differences may require PCB redesign.