TinySwitch-4 MTBF calculation
Hello,
I am designing power supply with TNY284P, and I would like to calculate MTBF according to MIL-HDBK-217F.
I can measure voltage/current/temperature, but I don't know which parameter I should use.
Please let me know how to proceed the prediction.
Thank you.
回應
Thank you for your reply.
Do you mean I can calculate it as "MOSFET"?
How shall I consider control circuit block?
I thought it shall be calculated as "IC" + "MOSFET".
I can calculate "IC" part if I can identify C1 value on MIL-HDBK-217F handbook, sec. 5.1.
I appreciate if you can tell me more detail of calculation method or complexity of the device.
Thank you.
HI Nagai,
You are right. It should be calculated as IC + MOSFET. I'll try to get in touch with the IC design guys and get back to you on this.
Regards,
Hi Nagai,
Unfortunately we can not disclose in a public forum the details regarding the aforementioned C1 value due to confidentiality. We can however send it to you by e-mail.
Please also check (attached) if the result from our reliability report may suffice for your needs.
Regards,
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Thank you for sharing FIT value of the item.
I think it is useful for calculate system MTBF.
I appreciate if you can also share more information regarding C1 value calculation.
My e-mail address is "tetsuya.nagai@prbx.com"
Thank you in advance.
Best Regards,
Hi Nagai,
You can use the values declared on the Absolute Maximum Ratings page on the datasheet (see attached).
Regards,