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3 phase input , 3 output power supply

Atul Bhakay
Genius 3205 points
Other Parts Discussed in Thread: PMP10415, PMP10397, PMP9066

Hi,

I am looking to build a 3 phase power supply based on T I devices. The specs are as given below :-

Input : 3 phase – 3 wire (R, Y, B) – 440V – line to line

Outputs : 5V / 7A, 24V / 3A and 24V / 2A – all 3 outputs isolated from each other

Kindly suggest suitable reference design

Regards

Atul Bhakay

 

  • 0
    Genius 3295 points
    Atul,

    Why do you need 3 phase? The power requirement is only 155 W. Can't you use a single phase? This is unique design and I don't think I've ever seen a reference to match this requirement. You need a three phase rectifier or PFC front end and then a ~620 V to 5 V and 24 V DC DC. IMO, you need a custom design. If you only tap one line to line voltage you will make life easier for the PFC and I wouldn't think 155W would cause that big of an imbalance for the generator.
  • 0 in reply to Chuck Sampson
    TI__Mastermind 34465 points

    TI reference design PMP10415 is a 4 channel 54W 300VDC to 528Vac power supply.

    It doesn't exactly meet your needs but it can be used as starting point for your design.

    Also PMP10397 is a single output 85Vac to 528Vac based on a BJT switch that you may wish to consider.

    And the PMP9066 has a max input voltage of 768Vac

    These designs are aimed for the high voltage single or 3 phase AC applications where 115Vac is just not available.