I want need more clarification on MOSFET SOA, VDS and Id relation Motor Driver Peak Current 45A Voltage 48Vdc
I'm considering one MOSFET whose Id mention 113A at 100°C
1. Vds=Rds_onId is that correct to check the relation according to this Vds=0.007150 i.e. 0.355V and if I check the 0.42V on x axis the respective current approx. 40A on y axis (which is limited by Rds_on of MOSFET).that is so I'm not operating safely
2. I'm using 48V battery to drive my BLDC motor, so shall I consider 48V as Vds X axis (blue mark in SOA image) to obtain respective current on Y axis of SOA (red mark in SOA image Fsw 10 kHz and pulse time 100 us). So the current is only 50A. almost at the margin what I required
I've checked with some other mosfet also which has 180A current at 100°C according 1 step the resp current is 130A and by step to only 60A.
Above the rating the as per SOA,Mosfet get Damaged So please clarify which one of above step should be used to check mosfet safe operating Area.
also want to know when I will get to operate the mosfet at 113A,as mention in datasheet of MOSFET. or that is not practical
Waiting for a valuable reply Thanks!
IPB039N10N3 G datasheet link: https://www.infineon.com/dgdl/Infineon-IPB039N10N3G-DS-v02_03-en.pdf?fileId=db3a30431ce5fb52011d1ed1fd3915e0