NCP1654BD133R2G

Overview

The NCP1654BD133R2G is a power factor correction controller designed for continuous conduction mode (CCM) step-up pre-converters. It operates in fixed frequency mode, controlling power switch conduction time based on instantaneous coil current. The device supports average current-mode or peak current-mode operation and features programmable overpower limitation, brownout detection, overvoltage protection, and soft start. It is housed in an SOIC-8 package with a typical switching frequency of 133 kHz, a maximum supply voltage of 20 V, and a drive capability of 1500 mA.

Feature Summary

• Integrates high safety features including input power runaway clamping circuit support
• Minimizes external component count through integrated control logic
• Supports both average current-mode and peak current-mode operations
• Includes programmable overpower limitation and undervoltage detection

Applications

• Compact CCM PFC stages
• Robust power factor correction pre-converters
• Input power runaway clamping circuits

Procurement Notes

Verify the specific suffix BD133 to confirm the 133 kHz switching frequency variant. Ensure the SOIC-8 package type matches the design requirements. Confirm RoHS compliance status through official documentation before integration. Check for any recent product change notifications that may affect pinout or electrical characteristics.

Selection Notes

Select this component for applications requiring a robust CCM PFC solution with minimal external parts. The fixed frequency operation simplifies EMI filter design compared to variable frequency controllers. Consider the 133 kHz frequency for balancing efficiency and size constraints. Verify thermal performance within the SOIC-8 package for the intended power level.

Part Context

This part belongs to the NCP1654 series of power factor controllers from onsemi. It is specifically engineered for compact and robust continuous conduction mode pre-converters. The series emphasizes simplified implementation by reducing the number of required external components while maintaining high safety standards.

Replacement Considerations

NCP1654BD200R2G offers a 200 kHz switching frequency option. NCP1654BD65R2G provides a 65 kHz alternative. These variants share the same package and core functionality but differ in operating frequency.