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• B

  NeoGen 2

  Can we have some details and an explanation for this?

  • Sunday at 4:07 PM
• J

  imgonline-com-ua-CompressToSize-XPO11Eqc30i38cgT.jpg

  D.A.(Tony)Stewart said:

  Charging 100 uF from the high side driver to 0.5CV^2 in the RC time must produce excessive current with low ESR and excessive V drop on high side. Try a soft start with an L and PWM

  Click to expand...

  I have removed the capacitor n still get low voltage at my highside driver outputs. Could u redraw my...

  • Apr 26, 2022
• J

  imgonline-com-ua-CompressToSize-HhEx8pEbErro1Z3.jpg

  ahmed-agt said:

  Note, the current output of TLP250 as stated in the datasheet is 0.5A minimum to 1.5A maximum.
  if I may ask! why did you use 67nS for the gate charge calculation?
  What is the Frequency of your generated PWM or SPWM?
  MOSFET is a voltage-driven device, So the magnitude of current you stated...

  Click to expand...

  • Apr 26, 2022
• J

  imgonline-com-ua-CompressToSize-XPO11Eqc30i38cgT.jpg

  D.A.(Tony)Stewart said:

  Charging 100 uF from the high side driver to 0.5CV^2 in the RC time must produce excessive current with low ESR and excessive V drop on high side. Try a soft start with an L and PWM

  Click to expand...

  I have removed the 100uf capacitor I still get 7.8Vac at my high side outputs how but 11.2Vac at my low sides

  • Apr 26, 2022
• J

  imgonline-com-ua-CompressToSize-HhEx8pEbErro1Z3.jpg

  ahmed-agt said:

  Note, the current output of TLP250 as stated in the datasheet is 0.5A minimum to 1.5A maximum.
  if I may ask! why did you use 67nS for the gate charge calculation?
  What is the Frequency of your generated PWM or SPWM?
  MOSFET is a voltage-driven device, So the magnitude of current you stated...

  Click to expand...

  • Apr 26, 2022

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