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SY23425 - Secondary Side Synchronous Rectification Controller

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Features

  • The SY23425 is a synchronous rectification controller with high performance capabilities, ideal for use in flyback converters operating in CCM (Continuous Conduction), DCM (Discontinuous Conduction), and QR (Quasi-Resonant) modes. It can drive both standard and logic-level N-channel MOSFETs for secondary-side synchronous rectification. To prevent false turn-on by parasitic ringing under DCM or QR mode, the device uses the DSEN voltage falling slope rate detection. The SY23425 features a DSEN hi.

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Datasheet Details

Part number SY23425
Manufacturer Silergy
File Size 814.22 KB
Description Secondary Side Synchronous Rectification Controller
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SY23425 Secondary Side Synchronous Rectification Controller General Description Features The SY23425 is a synchronous rectification controller with high performance capabilities, ideal for use in flyback converters operating in CCM (Continuous Conduction), DCM (Discontinuous Conduction), and QR (Quasi-Resonant) modes. It can drive both standard and logic-level N-channel MOSFETs for secondary-side synchronous rectification. To prevent false turn-on by parasitic ringing under DCM or QR mode, the device uses the DSEN voltage falling slope rate detection. The SY23425 features a DSEN high-voltage blanking time detection function that enhances system ESD performance, preventing external noise from false turn-on of the SR (Synchronous Rectifier) MOSFET.
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