TPSM63610: TPSM63610 out ripple big

Hello,

Please provide waveforms for what you are measuring, switching frequency condition, and load current of application. What is considered "ok" and "bad" in this context?

The device is a module with internal compensation so the only thing we can change is the switching frequency and output capacitance.

Regards,

Jimmy

hi sir

out 3v,5v,12v,15v

I can see the noise in the out, can I reduce it?

thanks

hi sir

Test the EVB, found the noise rasing along to the output voltage , i know that is correct

did you have any advise to reduce the noise ? thanks

hi sir

old design is use LTM8026EY, add a filter can remove the Ripple,

but use the TPSM63610 on my PCB board

i can remove the ripple even add LC filter before the output

please advise it

Hi,

I forgot to ask, when you changed the output voltage setting to 15V on EVM, what is the switching set to?

For 15V output, I would suggest switching at 1 - 1.4MHz. 

For the old design using LTM8026 what is the filter used to remove ripple? Perhaps you can change the TPSM63610EVM to include that filter and retest.

Regards,

Jimmy 

hi Jimmy

could you provide the waveform chart  When AC coupling? vout 3.3v,5v,12v,15v? when vin is 24v?

thanks

Hi,

Update: I had to push this testing out to end of week. Please expect to hear back from me by 2/2/24 EOB (PST).

Regards,

Jimmy

thanks