NCP1622AEASNT1G

Overview

The NCP1622AEASNT1G is a power factor correction controller from onsemi, designed for driving PFC boost stages. It utilizes valley-synchronized frequency foldback (VSFF) technology to enhance efficiency across load ranges. The device operates in critical conduction mode (CRM) and reduces switching frequency to approximately 30 kHz under light loads to minimize standby losses. It is housed in a compact TSOP-6 surface-mount package with a maximum power dissipation of 550 mW. The component supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Implements valley-synchronized frequency foldback to maximize energy efficiency at nominal and light loads while minimizing standby loss.
• Maintains consistent power factor performance even when the switching frequency is reduced during low-load conditions.
• Operates in critical conduction mode to drive PFC boost stages with minimal external component requirements.

Applications

• Power factor correction boost stage driver
• High-efficiency AC-DC power supply designs
• Applications requiring minimized standby power consumption

Procurement Notes

Verify the specific suffix 'EA' against official manufacturer documentation to confirm pinout and functional compatibility, as variations exist within the NCP1622 family. Ensure the selected package matches the TSOP-6 footprint required by the design. Cross-reference the datasheet revision to validate thermal characteristics and electrical parameters before finalizing the bill of materials.

Selection Notes

Select this component for applications prioritizing high efficiency across varying load conditions without complex control circuitry. The integrated VSFF feature makes it suitable for systems where reducing electromagnetic interference and standby power are critical. Verify that the input voltage range and output power requirements align with the capabilities of the CRM operation mode supported by this controller.

Part Context

This part belongs to the NCP1622 series of power factor controllers. The series is characterized by its ability to deliver high power factor and low total harmonic distortion using a simple boundary conduction mode approach. The NCP1622 family is engineered to reduce system cost and size by minimizing the number of external components needed for implementation.

Replacement Considerations

Consult official substitution guides for compatible parts within the NCP1622 series or equivalent PFC controllers. Verify that any replacement maintains the TSOP-6 package and supports the required VSFF functionality for equivalent efficiency performance.