UCD9090A: UCD9090A

Hello Olonbayar,

Thank you for the inquiry. I will be happy to recommend a part to you but I will need to get some more information:

1) Can you give me an idea of the end application? Will this be for Safety, camera PMIC, etc.?
2) Can you tell me what device would this be powering?

Thank you.

Regards,

Alex

Hi Alex, 

The end application would be mobile communications that employ phase shifters in its high frequency frontend. It should power a high frequency frontend which should do beam forming. 

I see that the part I mentioned used more for monitoring that provide stable supply for every input. In my case, it would be great if the part can produce multiple supplies from the same voltage source.           

Thanks OLonbayar    

Hi Alex, 

Thanks for your recommendation. The component looks quite suitable. That is a vey good one. You mean besides this component I can use other buck converter on the same board if I need voltages that this component can't provide, do you?  I think all different supplies and control voltages (roughly 10 different) mentioned earlier I can generate with the component you suggested.  I also would need another eight control voltages between 0 to 1V with the step below 10mV.  I am wondering if I should use some precision DAC for that so that I would have roughly the component you advised and plus one DAC on the same board to get all these voltages. Would be great if you can give me some advice on that. 

With the best

Olonbayar

Hi Olonbayar,

Unfortunately given the Holiday Season most of the support in the office is on vacation. I should be able to give you a proper response sometime the week of January 4th. Apologies for the delay. Thank you.

Regards,

Alex

Olonbayar,

Based on your diagram, it looked like you needed 2 PMIC devices to produce a total of 8 outputs. The TPS6594x device is one part with a total of 10 outputs (6 Bucks/4 LDOs) so it alone would satisfy your needs just from the standpoint of total voltage supplies needed. However, if you need the PMICs to be in 2 separate locations on your application board (as I have interoperated from the diagram), then you could use this part in both locations. Let me know if that clears up your first question.

I will be transferring this ticket to someone in our Buck Converters group to address the DC/DC devices you'd asked about earlier. If you have any further questions for me feel free to let me know. Thank you and Happy Holidays!

Regards,

Alex

Olonbayar,

My apologies, please ignore my last response as I actually got it confused with another ticket (looks like part of my brain has already gone for the Holidays).

Your interpretation was correct, aside from the TPS6594x you can use another Buck Converter on the same board if you need additional voltages which the TPS6594 cannot provide.

I cannot provide you with a DAC part as that would require expertise from another group. I have transferred this ticket to them and they should be able to provide you with better guidance. Thank you and Happy Holidays!

Regards,

Alex