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DC to AC Converter requirement.

Other Parts Discussed in Thread: LM5036

Hi,

We have to design DC-AC Converter as per below specifications

1. Input: 52-154VDC

2. Output: AC 24V, 80KHz

Output current current should be as per attached image.

Please suggest us any design /IC/ Circuit/ topology?

  • Hi A.S.Bhushan,
    What type of load are you driving? Is it resistive?
    Is the exact shape of the waveform important?
    Thanks
    Joe Leisten
  • Hi Mr. Joe Leisten,
    Thanks for your reply.
    It is not resistive load.
    Output will directly connect to transformer primary.
    And yes, output current shape is very important.
    Output voltage may be 24V peak pulses.
  •  Hi Mr. Joe Leisten,

    Thanks for your reply.

    It is not resistive load.

    Output will directly connect to transformer primary.

    And yes, output current shape is very important.

    My requirement is as per attached image

  • Hi A.S.Bhushan,
    My suggestion would be to complete this in two stages.
    First is to down-convert your input voltage to provide the required amplitude for your AC supply.
    The second stage is to use a half-bridge or bridge converter to generate a square-wave output at the required output frequency. You can use an output transformer ensure the output is true AC and allow it to be centered about the required GND level.
    Use a voltage mode half-bridge controller that offers very high duty cycle output, such as LM5036 to ensure that the output is approximately a square wave.
    I hope this helps.
    Joe Leisten
  • Hi Mr.Joe Leisten,
    Thank for your valuable reply. Good solution.
    Can I get exact square wave using LM5036?
    I will come back to you once i will check the circuit / IC of LM5036.
    Thank you so much.
  • Hi A.S.Bhushan,
    Since there has been no activity on this post for a while I am marking it as resolved. Please feel free to open another thread if you have any other questions.
    Thanks
    Joe Leisten