Part Number: DRV8323RS
Dear TI team ,
We have designed our custom board using drv8323rs Bldc motor drive for running max 12000rpm ...and used CSD19532KTT N-channel mosfet. for testing we have interfaced msp430(booster Drv8323 evm gui) with our custom board drv8323rs Hall sensored project
intially motor didnt ran ,after referred smart gate driver document ..changed random step by step IDRIVEP and IDRIVEN values as per Qgd/tr-source and Qgd/Tf -sink .motor start running and maximum 12000rpm also running.. but not as per calculated theoretical calculated values .
Now we set IDRIVE_HS -0X03BF And IDRIVE_LS -0X06BF.. motor running was not proper sometimes ,gate driver trip with voltage fault and over current .. drv8323 starts heating up .. For example 6000rpm for half an hour running its trip... Please note mosfet not get heat... During testing without no load..
kindly guide us to calculate the IDRIVE values as per attached mosfet datasheet and help me to clear this fault and reduce gate driver heating ...??
And also need to know reason of Drv8323 getting heat.. Because of IDrive settings drv 8323 heating or any some other parameters need to change in hall based sensored code which Texas instrument provided..???
We initially we tested with launchpad msp430 and booster Drv8323rs evm gui . Successfully working fine . But we changed only mosfet in our custom board.. For no load gets heat...
For another application with 2amps load with booster pack we facing above 50 degree heat in Drv8323 booster board itselff like Drv8323 and mosfet.. In the cases. Kindly guide us tunning parameter in given source code for bldc motor ???
Thanks & Regards
ShriRam Jcsd19532ktt.pdf