Part Number: TPS54560B Other Parts Discussed in Thread: TPS54560 , TPS54360 I'm working on a circuit using TPS54560 generating a 15V 2.6A output. The output voltage is around 15V and the chip is working, but there is a huge output ripple (the fluctuation…
Hi Ignacio,
I accidentally gave you the wrong excel calculator, but looking at your schematic I was able to fill out this new excel calculator with recommended values.
The main changes I would make to your schematic are shown below. Currently I have…
Hi Henry,
Attached is the parameters that I have input, please check it.
For this measurement I set the PSU at 12 V to the Power simulation board, then the power simulation board was connected to the DUT (test board).
actually the frequency is normal…
Hi Antonella,
I run the schematic through the calculator and it looks ok.
3823.Copy of TPS54360-361FAMILY_CALC_TOOL_REVE.xls
Do you have the waveform of the SW node, VIN, VOUT at 2A and at 4A with the TPS54560-Q1? Also, do you have the layout…
Hi MJ,
The revised schematic looks ok, although the inductor still have a saturation current less than the max current limit of the device.
I suggest using an inductor with a saturation current of 9.8A which is the max of the current limit for the…
Hi, yes in general we do not recommend a capacitor on the FB node since that could create a pole that may cause instability in your system. The other thing that may cause a noise issue on the FB node is the layout, in general we put the top and bottom…
Hi Amelie,
It could be that the webench is using electrolytic capacitor instead of ceramic capacitor. The electrolytic capacitor add some zero on the compensation due to its ESR of 35mohm.
The important part is that the time constant of Rcomp and…
Hello Trevor,
Can you complete the calculator tool in the attachment for stability analysis?
4477.TPS54360-361FAMILY_CALC_TOOL_REVE.xls
Best Regards,
Ankit Gupta
Application Engineer
