NCP1342ANACECD1R2G

AC DC Converters, Offline Switchers Overview

The NCP1342ANACECD1R2G is a quasi-resonant flyback controller designed for high-performance offline power converters. It features valley lock-out switching to ensure stable operation and minimize switching losses. The device integrates an active X2 capacitor discharge function, enabling no-load power consumption below 30 mW. It supports frequency foldback and skip modes for improved light-load efficiency.

AC DC Converters, Offline Switchers Feature Summary

• Valley lock-out switching circuit ensures stable valley switching operation
• Integrated active X2 capacitor discharge capability for safe line removal
• Minimum peak current modulation (MPCM) enables rapid frequency reduction at light loads

AC DC Converters, Offline Switchers Applications

• Medium or high power AC-DC adapters
• Ultra-high density AC-DC adapters
• USB PD standard compliant chargers
• Laptop adapters
• Flat panel TV SMPS

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'E' in the part number against official datasheets to confirm package type and tape/reel specifications. Confirm component status as End-of-Life (EOL) with restricted supply availability before finalizing procurement plans.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for designs requiring low standby power and reduced acoustic noise. The integrated protection features support robust converter durability across varying input voltage conditions without external components.

AC DC Converters, Offline Switchers Part Context

This component belongs to the NCP1342 series of highly integrated quasi-resonant flyback controllers from onsemi. The series is engineered for offline applications requiring high efficiency and compact form factors through advanced switching management techniques.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1342AMAACD1R2G

AC DC Converters, Offline Switchers FAQ

How does the NCP1342 manage light load efficiency?

It employs minimum peak current modulation (MPCM) to rapidly lower the switching frequency and utilizes skip modes to manage power transfer while minimizing audible noise.

What safety feature is included for AC line removal?

The device includes an integrated active X2 capacitor discharge function that safely discharges capacitors upon AC line removal.