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TPS92411x Floating Switch for Offline AC Linear Direct Drive of LEDs with Low Ripple Current

Alex Gavrilenko
Prodigy 30 points
Other Parts Discussed in Thread: TPS92411

Hi,

- what will the removal from the circuit of capacitors connected in parallel to the LEDs?;

 - what will replace these capacitors on ceramic, which have a significantly lower capacity?

please answer info@enova-l.ru.

  • 0
    TI__Mastermind 28655 points
    Hello,

    The capacitors can be reduced however the voltage across the LED sections will not be close to DC anymore. The TPS92411 open threshold needs to be increased to prevent multiple switch operations. This will depend on how much capacitance is across the LEDs and is easiest to do by watching the stack voltages during operation.