NCP1342ANACCED1R2G

AC DC Converters, Offline Switchers Overview

The NCP1342ANACCED1R2G is a high-frequency quasi-resonant flyback controller manufactured by onsemi. It operates within a supply voltage range of 9 V to 28 V and supports switching frequencies up to 500 kHz. The device utilizes a 9-lead SOIC package for surface mount installation. It functions as an offline AC/DC converter with a flyback topology, designed for efficient power management in various applications.

AC DC Converters, Offline Switchers Feature Summary

• Integrated active X2 capacitor discharge capability enabling ultra-low no-load power consumption below 30 mW.
• Valley lock-out switching circuitry ensures stable valley switching operation down to the sixth valley.
• Combines minimum peak current modulation (MPCM) with frequency foldback to optimize light load performance.
• Includes comprehensive protection features such as non-dissipative over-power protection (OPP) and latch-overvoltage.

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 ACCED against official datasheets to confirm exact packaging and temperature grade specifications. Ensure compatibility with the target PCB footprint for the 9-SOIC package. Cross-reference RoHS compliance status with current manufacturer declarations before finalizing procurement orders.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high efficiency across varying load conditions through quasi-resonant switching. Consider its integrated protections for robust system reliability. Evaluate the 9-SOIC package constraints against available board space. Confirm input voltage ranges align with the 9 V to 28 V operating specification.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP1342 series of highly integrated quasi-resonant flyback controllers. The series is engineered for high-performance offline power converters. It shares core architectural features with other variants in the family, differing primarily in packaging and specific ordering suffixes.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1342ANDCDAD1R2G

AC DC Converters, Offline Switchers FAQ

How does the NCP1342 manage noise at light loads?

It employs a skip mode to manage power transfer while minimizing audible noise when the load decreases further.

What protection mechanisms are included for fault conditions?

The device includes internal undervoltage detection, non-dissipative OPP, latch-OVP, OTP via an NTC pin, and line removal detection for safe X2 capacitor discharge.