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Hello Yoshikawa-san,

There is no specific test report on ESD for TLV62568 but you can refer to the attached complete Quality report that include HBM and CDM ESD.

FMQR TLV62568DRL and TLV62568PDRL in SOT-563 Package (RFAB JCAP B2 JCET ....pdf 

Best regards…

The discussion will be taken offline from here, so I am closing the thread.

BR,

Zain

Hi John,

If you don't have further question, then I will close this thread. Feel free to open it again by posting to your comments or questions.

Best regards,

Excel

Are you talking about the Power supply to the laptops or you are referring to the Power Supply from the USB ports? I think I was not clear enough when I said powered from the laptop. I meant to mention that the device was powered from the USB port of…

Dear Ambimat,

Kindly provide your email address and I will reachout to you.

Thanks,
Zain

Dear Zain,

Zain Riaz said:

• Please confirm if the load (Wifi) is always the same when you connect with any of the laptops.

Yes this is correct.

Zain Riaz said:

Can you also provide the layout details of your design.

Can share the same over email.

Dear Zain,

Can you please provide your email address so that we can share confidential information over email?

Thanks

Ambimat.

Hi Ambimat,

Thanks for reaching out. From the information you provided I do not see any foreseeable problems. I will ask you to confirm some things, and provide some more data:

• Please confirm if the load (Wifi) is always the same when you connect with…

Hi John,

The ringing on VSW happens when the output capacitor and Coss of the low-side FET goes to charging and discharging cycle after the inductor is de-magnetize (Icoil = 0) and the body diode of the low-side FET turns off.

Best regards,

Excel

Hi Dan,

we don't have pin-2-pin alternatives to TPS5420 in our low-VIN portfolio to  my knowledge.

Here are some alternative low-VIN bucks, that can all be used with a 5V input and generate 3.3V and 100mA output:

- TLV62568 (available in SOT23 and…

Hello Gerard,

As an alternate option, if you need 3.3V output, pull down the EN pin of TLV62568 so it's disabled.

With regards to TPS7A9101, please post a separate query here in E2E to address your question because it is a separate team supporting this…

Hello Gerard,

Please see below response.

Question: is that chip able to pass through VIN to VOUT without droput loss? --> TLV62568 cannot support lossless dropout fron Vin to Vout due to dropout on the high-side FET, DCR of the inductor and PCB trac…

Hi,

TLV62568 might be OK from Webench. I will involve low-Vin buck engineers for further suggestions.

Hi Wesley,

TLV62568 is a combination of peak current and adaptive off-time controls. The peak current mode control dictates the on-time duration by terminating the pulse once the peak current reached the current limit while on the other hand, the off-time is…

Hi Wesley,

The schematic looks ok.  C74 is recommended for best performance and should be 6.8pF.

The input cap is ok, since there is a ceramic cap present.  Here is the explanation for the tantalum cap: https://e2e.ti.com/blogs_/archives/b/fullycharged/archive…

Hi Tom,

in the case of TLV62569 the recommended alternative parts can cover different output current (TLV62568 and TLV62585) or come with different features, such as forced PWM for the TLV62569A.

This shall simply give more flexibility for the customers…

Hi SHH,

TLV62568 is the closest to competition device. But please consider the recommended Lout and Cout values indicated below.

Best regards,

Excel

Hi Takahashi-san,

It would be better to discuss this internally. I will an email to respond to your query.

Best regards,

Excel 

hi, Excel-san.

thanks your reply.

TLV62568 has several different package and 2 different packages are different dimension between SOT23-6 and SOT563-6.

it seems like that we can't chose what type of package over wbench.

could you simulate based…