Constant Current Source Design which can source 20A current

Hi

Suggest a constant current regulator which can source 20A current and support a voltage output of minimum 100V. 

If modification is made, can i use LT3763 to operate at 100V like by using GATE drivers.

Regards

Bivin George

Parents
  • Hi FormerMember

    In LTC3779 data-sheet it is mentioned, " Constant-Current Regulation (IAVGSNSP and IAVGSNSN Pins)The  LTC3779  provides  a  constant-current  regulation loop for either input or output current. A sensing resistor close  to  the  input  or  output  capacitor  will  sense  the  input  or  output  current.  When  the  current  exceeds  the  programmed  current  limit,  the  voltage  on  the  ITH  pin  will  be  pulled  down  to  maintain  the  desired  maximum input or output current. "

    Kindly explain the above.

    Also mentioned that " The only IC to survive 100V output is LTC3779 which can also work as a current source. "

    If LTC3779 can't be used, suggest an IC which can be used as constant current regulator to regulate current of 14A at 100V.

    What about LT3796 or LT3756 IC to regulate current at 100V with 14A. Please reply asap.

    ltc3779ltc3796 lt3756

    Regards

    Bivin George

Reply
  • Hi FormerMember

    In LTC3779 data-sheet it is mentioned, " Constant-Current Regulation (IAVGSNSP and IAVGSNSN Pins)The  LTC3779  provides  a  constant-current  regulation loop for either input or output current. A sensing resistor close  to  the  input  or  output  capacitor  will  sense  the  input  or  output  current.  When  the  current  exceeds  the  programmed  current  limit,  the  voltage  on  the  ITH  pin  will  be  pulled  down  to  maintain  the  desired  maximum input or output current. "

    Kindly explain the above.

    Also mentioned that " The only IC to survive 100V output is LTC3779 which can also work as a current source. "

    If LTC3779 can't be used, suggest an IC which can be used as constant current regulator to regulate current of 14A at 100V.

    What about LT3796 or LT3756 IC to regulate current at 100V with 14A. Please reply asap.

    ltc3779ltc3796 lt3756

    Regards

    Bivin George

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