NCP1654BP65G

Overview

The NCP1654BP65G is a Power Factor Correction (PFC) controller designed for Continuous Conduction Mode (CCM) boost pre-converters. It operates in fixed-frequency mode, controlling power switch conduction time based on instantaneous coil current. The device minimizes external component count and simplifies PFC implementation within an SOIC-8 package. Key electrical parameters include a typical switching frequency of 65 kHz, a maximum VCC voltage of 20V, and a drive capability of 1500 mA. It supports average or peak current-mode operation and features integrated safety protections such as overcurrent, overvoltage, and brown-out detection.

Feature Summary

• Integrates high-safety protection features including input power runaway clamping circuitry
• Supports both average current continuous conduction mode and peak current mode operation
• Features extremely low startup current to minimize system standby power consumption
• Provides programmable overpower limitation and undervoltage detection for open-loop shutdown

Applications

• Flat panel televisions
• PC desktop computers
• AC adapters
• Offline SMPS systems

Procurement Notes

Verify the specific suffix 'BP65G' against official manufacturer documentation to confirm pinout compatibility and switching frequency configuration relative to other NCP1654 variants. Ensure that ordering information matches the exact package type and tape/reel specifications required for your assembly process. Cross-reference with the latest datasheet revision to confirm RoHS compliance status and any recent design changes.

Selection Notes

Select this component when designing compact CCM PFC stages requiring minimal external components. It is suitable for applications needing robust protection against input power runaway and over-stress conditions. Consider the 65 kHz switching frequency for lower EMI requirements compared to higher frequency variants. Ensure the application can accommodate the SOIC-8 package thermal characteristics and verify that the drive current capability meets the gate charge requirements of the selected MOSFET.

Part Context

The NCP1654 series comprises controllers for CCM PFC boost pre-converters, available in various packages and frequency options. The NCP1654BP65G specifically denotes the 65 kHz variant in a PDIP or similar package depending on the suffix interpretation, though standard data often references SOIC-8. It belongs to the broader NCP1654 family which includes BD133R2G and BD200R2G variants offering different switching frequencies.

Replacement Considerations

Direct substitutes within the same family include NCP1654BD65R2G for SOIC-8 packaging with identical 65 kHz functionality. For different package requirements, check NCP1654BP65G equivalents. Ensure replacement parts maintain the same CCM control architecture and protection feature set.