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About calculation method and Vout of LM5020-2

Satoshi
Guru 19645 points
Other Parts Discussed in Thread: LM5020

Please let me know about LM5020-2.

【Calculation method】

・UVLO

・Compensation

【Vout】

・Customer planning parallel connection of  gate driver and FET , is it OK?

Vout ⇒ Gate driver ⇒ FET

　　　　⇒Gate driber ⇒ FET

　　　　　　　　・

　　　　　　　　・

　　　　　　　　・

・What is the maximum current of Vout?

 

Best regards,

Satoshi

 

 

  • 0
    Guru 19645 points

    How is the situation?

  • 0 in reply to Satoshi
    TI__Expert 3545 points

    An external set-point voltage divider from Vin to GND sets the operational range of the converter. The resistor

    divider must be designed such that the voltage at the UVLO pin is greater than 1.25V when Vin is in the desired operating range.

    You can parallel MOSFETs, but you need to carefully check the Gate Charge of the FETs that you are selecting to be sure the LM5020 can drive them.  Some of the key parameters are the oscillator frequency and the rise and fall time of the switching waveforms.

    You need to tell me what topology you are using, a Flyback?