CSD18543Q3A: Range of safe operating area (SOA)

Masakazu Adachi

Intellectual 2500 points

Part Number: CSD18543Q3A

Hello team,

I have a question about SOA.

The customer wants to know the SOA at 20us, is the black line the limit if the pulse width is less than 100us?

Please let me know your opinion.

Regards,

Masakazu

over 2 years ago

+1 John Wallace1 over 2 years ago

TI__Mastermind 32335 points

Hello Masakazu,

Thanks for promoting TI FETs at your customer. The SOA current for a 20μs pulse width depends on VDS. At lower values of VDS (<30V), the upper limit is 156A, the maximum pulsed current limit specified in the datasheet. However, at higher values of VDS, it may be less than 156A. For example, at VDS = 30V, I would estimate the SOA current is about 100A. TI tests our FETs to failure, generates the curves and derates for the datasheet. Learn more about SOA at the link below.

https://e2e.ti.com/blogs_/b/powerhouse/posts/understanding-mosfet-data-sheets-part-2-safe-operating-area-soa-graph

Best Regards,

John Wallace

TI FET Applications