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/Title (NCV4390 - Automotive Advanced Secondary Side LLC Resonant Converter Controller with Synchronous Rectifier Control)
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Acrobat Distiller 21.0 (Windows)
BroadVision, Inc.
2021-11-12T10:29:09-07:00
2021-11-12T10:15:51-07:00
2021-11-12T10:29:09-07:00
application/pdf
NCV4390 - Automotive Advanced Secondary Side LLC Resonant Converter Controller with Synchronous Rectifier Control
Ƶ
The NCV4390 is an advanced Pulse Frequency Modulated (PFM) controller for LLC resonant converters with Synchronous Rectification (SR) that offers best in class efficiency for isolated DC/DC converters. It employs a current mode control technique based on a charge control, where the triangular waveform from the oscillator is combined with the integrated switch current information to determine the switching frequency. This provides a better control−to−output transfer function of the power stage simplifying the feedback loop design while allowing true input power limit capability. Closed−loop soft−start prevents saturation of the error amplifier and allows monotonic rising of the output voltage regardless of load condition. A dual edge tracking adaptive dead time control minimizes the body diode conduction time thus maximizing efficiency.
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