NCP1342BKDCDAD1R2G

AC DC Converters, Offline Switchers Overview

The NCP1342BKDCDAD1R2G is a high-frequency quasi-resonant flyback controller from onsemi, designed for offline power converters. It operates with a switching frequency of 500 kHz and supports an input voltage range of 9 V to 28 V. The device features a 700 V breakdown voltage and utilizes a 9-pin SOIC package. It includes protection mechanisms such as overvoltage, overtemperature, and short-circuit protection, ensuring reliable performance in AC-DC conversion applications.

AC DC Converters, Offline Switchers Feature Summary

• Integrates valley lock-out switching to minimize switching losses and enhance efficiency.
• Includes active X2 capacitor discharge capability for safe line removal handling.
• Features internal undervoltage detection and non-dissipative over-power protection.
• Supports burst mode skipping for reduced noise 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

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix BK against official datasheets to confirm pinout and electrical tolerances match design requirements. Confirm RoHS compliance status and moisture sensitivity level before assembly. Check for any recent product change notifications that may affect lead times or manufacturing locations. Ensure ordering quantities align with reel specifications.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high-frequency operation with reduced electromagnetic interference. The integrated valley switching reduces stress on the primary switch. Consider thermal management due to the SOIC-9 package constraints. Verify compatibility with external MOSFET gate drive requirements given the output current capabilities.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP1342 family of quasi-resonant controllers. It shares core functionality with variants like NCP1342AMDCDAD1R2G but may differ in packaging or specific electrical characteristics defined by the suffix. The family targets efficient offline power supply designs.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1342AMDCDAD1R2G is a documented substitute within the same family. Verify pin compatibility and electrical parameters before substitution. Other NCP1342 variants may require schematic adjustments due to differing suffix specifications.