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NCP1340 - Controller Featuring Valley Lock-Out Switching

Key Features

  • a proprietary valley-lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to frequency foldback mode to reduce switching losses. As the load decreases further, the NCP1340 enters quiet-skip mode to manage the power delivery while minimizing acoustic noise. To help ensure converter ruggedness, the NCP1340 implements several key protective features such as internal brownout detection, a non-dissipative Over Power Protection (OPP) for constan.

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Datasheet Details

Part number NCP1340
Manufacturer onsemi
File Size 2.15 MB
Description Controller Featuring Valley Lock-Out Switching
Datasheet download datasheet NCP1340 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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DATA SHEET www.onsemi.com High-Voltage, Quasi-Resonant, Controller Featuring Valley Lock-Out Switching 8 1 SOIC-8 NB D SUFFIX CASE 751 9 1 SOIC-9 NB D1 SUFFIX CASE 751BP NCP1340 The NCP1340 is a highly integrated quasi-resonant flyback controller suitable for designing high-performance off-line power converters. With an integrated active X2 capacitor discharge feature, the NCP1340 can enable no-load power consumption below 30 mW. The NCP1340 features a proprietary valley-lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to frequency foldback mode to reduce switching losses. As the load decreases further, the NCP1340 enters quiet-skip mode to manage the power delivery while minimizing acoustic noise.