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excitation for generator DRV110

sebastian thomas66
Prodigy 65 points
Other Parts Discussed in Thread: DRV110, UC3842, DRV8701

Dear all

Please give your valuable design hints and support for the design of an AC generator excitation POWER SUPPLY

I am trying to design an excitation power supply to power the feed back coil of ac generator with DRV110 . or any other suitable part from TI

Out put voltage of the generator -230v ac

Feedback excitation voltage -0 to 80 volt 5 amp

  • TI__Mastermind 26065 points
    Hi Sebastian,

    Sorry, I'm not so clear about your request. Could you give more description about your application?
    Are you going to find a driver or gate driver which can supply a 0~80V /5A power into a coil? Only low side needed or H bridge needed?
    Is DRV110 fully meet your request?
    Generally, Now we only have thing up to 60V.

    Best regards,
  • in reply to Wilson Zuo
    Prodigy 65 points

    Dear sir,

    I can explain my application,   i am trying to design an ( a small pcb module power supply )(8cm*8cm tottal size) AVR (automatic voltage regulator) to power the excitation coil (0-to 80 V DC)  of the AC generator to get a constant 230/440V  output from the generator ., a gate driver which can supply a 0-80VDC/ 5A  power into a coil, the voltage sense from a 230v AC line or  a 3 phase line . the out put voltage (0-80VDC) will increase or decrease  inversely proportional to the input voltage

    can drv110 is suitable for this application? 

    or any other is suitable like uc3842 SMPS ic with external power switch?

    please help me

  • in reply to sebastian thomas66
    TI__Mastermind 26065 points

    Hi Sebastian,

    When you say AC generator, it is a real generator (mechanical generator) or a DC-to-AC inverter circuit?

    If it is for a mechanical generator, it should be driven by another motor. Then you are finding a 80V motor driver solution, right? In this case, we have gate driver up to 45V VM supply such as DRV8701. We don't have device can go up to 80V now.

    If it is for a inverter circuit, you may need a DC-to-AC boost solution. uc3842 could be used for that purpose. You can also get more about it on the power forum.

    If I understand correctly, I don't think DRV110 can be used in either way.

    Best regards,