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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
Сֲ
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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