TPS922055: What is Switching frequency mean in TPS922055 ?

Hi, 

Our experts will give you a feedback late.

Hi Tex,

Sorry but I may not clearly understand what you meant. Do you want to know the switching behavior of TPS922055?

Best Regards,

Steven

Yes Steven Li..

please tell me the switching behavior of TPS922055.. and the purpose of that switching frequency in TPS922055

Does that switching frequency is for Buck converter used in it or for some other purpose ?

Regards,

Tex

Steven Li said:

TPS922055 is a Buck LED driver. Unlike constant-voltage DC/DC Buck regulators which you may be familiar with, TPS922055 is a constant-current Buck regulator if you use it to drive LED(s).

Will it generate noise ? 

Can i use multiple ICs with different switching frequencies connected to single MCU ?(all ICs will be connected to controller through PWM pin)will it affect the system ?

BR,

Tex

Thankyou!

Regards,

Tex

Hi Tex,

You are welcome. I am going to close this thread. Please feel free to contact me again if you have any further question.

Best Regards,

Steven

Hi Steven,

I found TPS92630-Q1 Linear LED driver IC which meets all of my requirements.. 

i would like to go with this to avoid that switching frequency concept..

please resolve some doubts on TPS92630-Q1..

• If my input voltage is 36V but i just want set the Maximum Output voltage per channel is 32V.. here How can i limit the maximum Voltage in this IC (if there is no way i would like to use a voltage divider near the input voltage)
• The Enable pin in this IC.. After how much time this EN pin will respond if we high/Low the pin ? can i toggle that pin with 60Hz frequency ?
• When i try to purchase this IC in Digikey/Mouser the part number of this IC is TPS92630QPWPRQ1 what does those QPWPR mean any other specs included in here ?

Also please let me know why is that voltage divider used for VSNS.. i'm unable to see how to set those VSNS voltage divider resistors in the Datasheet..

Apologies for my poor english,

Thanks and regards,

Tex

Hi Tex,

Sorry. I am currently out of office. I will reply to you next Monday when I am back to office. Thanks for your understanding.

Best Regards,

Steven

Hi Tex,

Sorry but I am not responsible for TPS92630-Q1. Please create a new E2E thread for this device and the corresponding engineer will help you.

Best Regards,

Steven

Okay, I'll do that!

Thankyou!

Regards,

Tex

Hi Tex,

You are welcome. I am going to close this thread. Please feel free to contact me again if you have any further question.

Best Regards,

Steven