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# UCC5320: Could you tell me about UCC5320S's "Peak source current" when Ta=85℃?

Part Number: UCC5320

Hi, team.

I'm the one who previously asked the following question.

https://e2e.ti.com/support/interface/industrial_interface/f/142/t/633345

※I'm sorry that the interaction was stopped in the middle.

Can you tell me because got a other perspective question?

＜Question＞

From the description in the data sheet, "IOH (Peak source current): 2.4 A @ MIN (Ta =125℃)" will be, but will you tell me the value of IOH (Peak source current) at Ta=85℃ ?

※I want to know how much the worst of the driving current decreases due to individual variation and temperature dependence of the internal circuit.

(Among them, the temperature condition the customer is considering is 85℃.)

＜Background＞
· The customer is examining UCC5320S and UCC5350S in parallel considering to the value of IOH.

· The price difference between UCC5320S and UCC5350S is large, I would like to consider with UCC5320S if possible.

· Customers are unable to teach me the device model number of the IGBT, so we want to judge whether the customer can use it based on the WORST condition of this driving current.

Best regards,

Masumi Sekiguchi

• Hi Masumi,

On the bench, I can measure the typical current, IOH at 85C but determining the minimum value will have to be done by our test team.
I can work on giving you a typical curve for IOH vs temperature but I will need a few days to complete this.

regards,
Mateo
• In reply to Mateo Begue:

Thank you very much for your response, Mateo-san.

>I can work on giving you a typical curve for IOH vs temperature but I will need a few >days to complete this.

I see...
will you give me a typical curve for IOH vs temperature(85℃, 125℃ point )?
Also, can you confirm to the test engineer of this product that the following consider is correct or not?

＜Consider＞
①: Confirm actual measured values ​​of IOH at points of 125℃ and 85℃.
②: Confirm what percentage of the specifications on the data sheet have the margin.
※Calculated from the comparison of the MIN specification value of the data sheet to the actual measurement value (Ta = 125℃) data.
③: Adjust the margin calculated in ② to the measured value at 85℃.
※Can this calculation be regarded as the WORST value of the driving current at Ta = 85℃?

Best regards,
Masumi Sekiguchi

Hello Masumi-san,

Yes, I will create a typical curve for you.

I have forwarded your questions to our test team and will update you on their response.

Regards,
Mateo

Hello Masumi-san,

Please use the below typical characteristic of IOH and IOL vs temperature for the UCC5320S.

The values at 85C are: IOH @ 85C = 3.59A and IOL @85C = 4.3A

my apologies for the delay!

regards,
Mateo

• In reply to Mateo Begue:

Hi Sekiguchi-san,

I was auditing some threads, and noticed you haven't clicked the Green button to let us know this solved your issue.

If it did, please click that button for us, if not, let us know how we can help.

Best regards,

Don Dapkus

Gate Driver Applications Engineering Manager

Dallas, TX USA

• In reply to Don Dapkus:

I am sorry I contacted you late.

I will push it.