Hi Pavani,
Thank you for your reply. My apologies for not making myself clear.
I am not looking to change the design of the power supply itself but rather add an output stage that has a low DC impedance and a high AC impedance (aprox. 60K @ 1KHZ) as seen from the load.
The load in this case is many devices on what is essentially a 1-wire bus. The power supply needs to supply 36VDC onto this bus with as little voltage drop as possible at the rated current of 500ma. These devices will then communicate on this bus by superimposing a 5Vp-p AC signal onto the 36VDC. The bit rate of these devices will be in the range of 500Hz to 5KHz.
The simplest approach would be to add an inductor in series with the power supply but at these frequencies the inductor would be a rather large and expensive 6H.
Although this is not directly related to the TPS55340 I was just looking for advice as to another approach. Perhaps an active solution such as a simulated inductor but with the higher current capability?
Regards,
Rob