NCP1622BECSNT1G

Overview

The NCP1622BECSNT1G is a power factor correction controller from onsemi designed for driving PFC boost stages. It operates in a TSOP-6 surface-mount package with a maximum power dissipation of 550 mW. The device supports a switching frequency of 33 kHz and functions within an operating temperature range of -40°C to +125°C. It utilizes valley-synchronized frequency foldback (VSFF) technology to enhance efficiency across varying load conditions.

Feature Summary

• Implements valley-synchronized frequency foldback (VSFF) to maximize energy efficiency at nominal and light loads.
• Maintains near-constant power factor even when the switching frequency decreases during operation.
• Operates in critical conduction mode (CRM) when inductor current exceeds programmed thresholds.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'ECS' against official documentation to confirm exact tape-and-reel specifications and manufacturing lot details. Ensure compatibility with standard SMD/SMT assembly processes given the TSOP-6 package type. Confirm that the 33 kHz switching frequency aligns with system EMI requirements and thermal management capabilities for the intended application environment.

Selection Notes

Select this component for designs prioritizing high efficiency under light-load conditions through VSFF implementation. The TSOP-6 package offers a compact solution suitable for space-constrained applications. Consider the 550 mW power dissipation limit and the -40°C to +125°C operating range when defining thermal boundaries and environmental constraints for the final product design.

Part Context

This part belongs to the NCP1622 series of power factor controllers, which are optimized for enhanced efficiency. The series leverages innovative control methods to reduce standby losses while maintaining performance. It is categorized under PMIC - Power Management ICs and specifically targets power factor correction applications requiring robust functionality with minimal external components.

Replacement Considerations

NCP1623ASNT1G shares the TSOP-6 package but differs in topology and control mode specifications. Verify functional equivalence regarding VSFF implementation and CRM operation before substitution. Cross-reference electrical parameters such as VCCMax and drive capability to ensure circuit compatibility.