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TIDA-00961: ZVS ZCD question

HS FAE Germany
Mastermind 32310 points
Part Number: TIDA-00961
Other Parts Discussed in Thread: TLV3501, TLV3502

Hello,
can you explain the function of TLV3501, CD74HC74M96 and TS3V330PWR for ZVS and ZCD? Is there some more description (nothing found in the TIDUDT3B).

Regards, Holger

  • 0
    TI__Expert 6800 points

    Hi, Holger

    Please give me some time for thinking. Will get back to you soon.

    Thanks.

  • 0
    TI__Expert 6800 points

    Hi, Holger

    I believe you should have no question on the function of those devices, but you do not understand the signal chain.

    all you need to keep in mind,

    the ZCD circuits are sensing the Vds slope, and comparing with a well tuned threshold (TLV3502).

    the MUX are used to swap the polarity in different ac cycle.

    And the D flipflop are used to latch the generated pulse for McU detection.