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  1. purple_jeep

    Lebowski controller build possible IPM output stage

    Hey Lebowski, Sorry I didn't mean you specified a default I just copied the setting from the manual as a starting point but now I am looking at the traces etc it makes more sense to me what it is and why it would need to be adjusted for different switching methods. I will use your formula to...
  2. purple_jeep

    Lebowski controller build possible IPM output stage

    Hi All, Slowly progress is made :) So tonight I set the PWM parameters with a nice high dead time (need to reduce the PWM freq as the IPM datasheet calls out <=20kHz): a) PWM frequency: 21kHz b) deadtime: 4933ns c) dutycycle testsignal: 50% d) toggle high side polarity, now active HIGH e)...
  3. purple_jeep

    Lebowski controller build possible IPM output stage

    Well I recieved the PicKit 3 and made up the programming circuit on a breadboard, after changing the configuration settings so the PicKit would power the chip I was able to program the PIC no problem. After installing the new version with f9 instead of fc the 24V rail was stable so thats...
  4. purple_jeep

    Lebowski controller build possible IPM output stage

    Guess what my day job is ;-) Managing a DOE funded project to develop next generation DC Link capacitors for automotive use. Current gen is all Metalized PP. Cheers Chris
  5. purple_jeep

    Lebowski controller build possible IPM output stage

    Close http://www.pwrx.com/Product/PM200CL1A060 300A was a bit pricey for right now. Cheers Chris
  6. purple_jeep

    Lebowski controller build possible IPM output stage

    Hi Lebowski, Thanks for the reply, no I have not been programming the 12F617 but I have ordered a PicKit 3 to do this! 25% off on www.microchipdirect.com atm so thats good and overnight shipping! I already have MPLAB installed from when I was looking at the code earlier so it should be...
  7. purple_jeep

    Lebowski controller build possible IPM output stage

    After assembly I connected a cable to the RS232 port to run the setup and well nothing so far.... Not getting any communication over the serial port. Any suggestions as to what I could be doing wrong or what could be wrong. I seem to have 5V on the appropriate pins on the Brain Chip...
  8. purple_jeep

    Lebowski controller build possible IPM output stage

    Well it has been a while but I have received the boards and finally had some time to look at it again! The board as recieved was fine except for two issues, somehow I managed to delete the mounting holes and forgot to add them back and also the holes for the IPM control chip were too small...
  9. purple_jeep

    Lebowski controller build possible IPM output stage

    Ahh ok, I deleted the tracks and re did them so thats all cleared up. Cheers Chris
  10. purple_jeep

    Lebowski controller build possible IPM output stage

    Been a while but I have made some good progress, figured out the CvPCB issue, turns out if you have a cmp file you need to import it into Eeschema using the "Back import component footprint field" button on the tool bar as they have moved away from using .cmp files. Also ran into the same...
  11. purple_jeep

    Lebowski controller build possible IPM output stage

    Hi Lebowski, Ahh yes silly mistake! Fixed that, when I do the board layout I will make sure to leave room for a heatsink on the 7815 if required. I think I am done with the schematic (attached), figured out how to build new library components for the powerex parts. I then annotated and...
  12. purple_jeep

    Lebowski controller build possible IPM output stage

    Slowly working out how to use KiCad. Lebowski how does this look as a modification to your power_supply sheet to generate the 24V I need for the IGBT driver chips? Next I am deleting the Driver sheets and adding a IGBTDrive sheet which means I will need to build new components and...
  13. purple_jeep

    build your very own Lebowski controller !

    I have a few spare boards here and chips if you are still looking for one? You are just after the brain board correct and will build your own power stage? Cheers Chris
  14. purple_jeep

    build your very own Lebowski controller !

    Hi Lebowski, I am back at working on the IGBT version for my brother, I need a 24V supply for the drivers so what do you think of the following: - From what I can tell from your PIC12F617 code you are comparing the signals from the 5V and 15V lines via external resistive dividers to 0.6V...
  15. purple_jeep

    Lebowski controller build possible IPM output stage

    Hi All, Been a while but I am back in the US and my brother has the money saved up to give this another go, he ended up asking me to get a 200A 600V IPM http://www.pwrx.com/Product/PM200CL1A060 alas they are out of the control board so at this point I think I will edit Lebowski's board to...
  16. purple_jeep

    build your very own Lebowski controller !

    Hi coleasterling, If you are still looking I am in AZ and I have a few spare boards and might be able to populate one for you if you wish. PM me. Cheers Chris
  17. purple_jeep

    Lebowski controller build possible IPM output stage

    Also the DC link capacitor was a bit warm at the end of the test once the IPM had failed. Cheers Chris
  18. purple_jeep

    Lebowski controller build possible IPM output stage

    Yeah, looks like it will all be going back to the US with me as I have the equipment at home to do all these tests. Don't even have access to a scope easily here. For the current sensor on the power line to the output stage does it need to be on a scope or is a fluke current clamp meter ok...
  19. purple_jeep

    Lebowski controller build possible IPM output stage

    It does not look like these particular modules have shoot through protection, all they mention on the topic is a required dead time of >=2us which the controller has but now that I think of it I am wondering if noise in the control lines could have been the cause of a shoot through and thus a...
  20. purple_jeep

    Lebowski controller build possible IPM output stage

    Do you think I can use super glue or should I go all out and use duct tape??? Cheers Chris
  21. purple_jeep

    Lebowski controller build possible IPM output stage

    Well that was a fun few days.... kinda :) First things first once I arrived here in Aus we had to get the 74HC04 CMOS inverter to buffer the signals from the brain board to the IPM and build a small prototype board to wire it up. No problems with this and while working on it my brother...
  22. purple_jeep

    Lebowski controller build possible IPM output stage

    You are pretty much right on the money with your comments! In the application note for the interface board (http://www.pwrx.com/pwrx/docs/BP7B%20Application%20note.pdf it mentions to use a 74HC04 CMOS inverter to buffer the signal if required which would also work from the sounds of it. I...
  23. purple_jeep

    Lebowski controller build possible IPM output stage

    Hi Lebowski, I have built the reference interface board with opticouplers and isolated power supplies, you can see it on top of the IPM in the picture I posted earlier. To drive the VLA606-01R (http://www.pwrx.com/pwrx/docs/VLA606-01R.pdf) it requires an on signal (IPM control input low) that...
  24. purple_jeep

    Lebowski controller build possible IPM output stage

    Hi Lebowski not sure if you are home yet but any thoughts on the IPM interface? Cheers Chris
  25. purple_jeep

    Lebowski controller build possible IPM output stage

    Found their website the main page would not load for me before :)
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