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Original question:

TIDA-010025: Pick and Place file for the TIDA-010025 boards

TIDA-010025: Using the design to build an AC variable power source

Caglar Cihan
Expert 6235 points
Part Number: TIDA-010025

Dear Team,

I am working on building an variable output AC supply for testing purposes. Could TIDA-010025 be modified to work as an adjustable output AC source?

Best Regards,

Caglar

  • 0
    TI__Expert 3570 points

    Hi Caglar,

    good to hear from you! 

    Thank you for your interest in the TIDA-010025. The TIDA-010025 is a PWM switched 2-level 3-phase AC inverter. We can run it in open loop t generate a 3-phase AC output voltage with variable magnitude and frequency by using an appropriate sinusoidal PWM modulation from e.g. 0Hz to 50Hz and a magnitude scale from 0 to 1, where 1 would
    give a peak amplitude of 0.5-times the DC-bus voltage.

    The output phase (to DC-) voltage is a PWM modulated output at two levels DC+ and DC- switched at the PWM carrier, e.g. 10kHz. To get an sinusoidal phase to phase voltage 
    the PWM carrier we need to be remove the PWM carrier with e.g. an appropriate LC filter. 

    Is that what you were looking for? 

    Regards,
    Martin Staebler

     

  • 0 in reply to Martin Staebler
    TI__Expert 3570 points

    Hi Caglar,

    following our discussion with your customer by email directly, I understood that the above explanation was clear enough for your customer the to understand the use case of TiDA-010025 with respect to a variable frequency and magnitude AC output voltage.

    Therefore I am closing this case. 

    Regards, Martin