Hi,
I am developing low cost precharger solution for a solar inverter. The switch for this precharger is an IGBT. I was wondering if I can use the UCC531x or any other isolated gate driver to turn on and off the IGBT in this case.
Thanks,
Carlos
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Hi,
I am developing low cost precharger solution for a solar inverter. The switch for this precharger is an IGBT. I was wondering if I can use the UCC531x or any other isolated gate driver to turn on and off the IGBT in this case.
Thanks,
Carlos
Hi Carlos,
The UCC53x0 family is used to drive IGBTs and MOSFETs. The family is differentiated by different current ratings and features such as split outputs, miller clamp, and UVLO referenced to the GND2 pin.
Take a look at the datasheet and let me know if one of these solutions works for your design.
Regards,
Mateo
Mateo,
Attached you will find my circuit application. This is a precharger circuit that will charge a DC link capacitor to avoid inrush current due to discharged capacitors. I would like to use an IGBT or MOSFET to act as a load switch and let pass the initial inrush current. The "control system" circuit would be a switch comprised of an isolated load switch and a microcontroller or interface.
Thanks,
Carlos
Hi Carlos,
Yes, the UCC5310 can be used as you have shown in your application.
Is there a reason you chose an IGBT? What is the voltage rating of the battery that you are using?
regards,
Mateo
Hi Mateo,
It can be an IGBT or a MOSFET, depending on the voltage. We are targeting a 400V battery and IGBTs have the rating and they are cheaper than a MOSFET at a higher voltage range. I have a question, how can I spec for the power supply? How much power (current wise) do I have to supply to the UCC chip? Since this is providing 2,3,4 or even 10 Amps in certain chips, I imagine the caps provide this charge and not the power supply, is that right?
Thanks,
Carlos