Hi Madhura,
We do not have a design tool for the transformer construction. Here is a Mathcad sheet for determining the power components.
https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/234/PMP3162_5F00_REVC.mcdx
regards…
Seems like a stability issue. To trouble-shoot, can you provide scope pictures of the output voltage (ac coupled) during the two load conditions? Also, please provide scope picture of the anode of the output diode (D2), which will show us the switching…
Hi Kamal,
Here are the electrical specifications for the transformer. As Robert said, we do not specify the actual winding construction. GCI is the supplier for the transformer (part number G135049LF) on this reference design. GCI is happy to provide…
Hi Arion,
The varistors are there for surge protection, and do not play role in the actual power conversion. I don't think you will find any varistors that are significantly smaller, but if you already have surge protection elsewhere in your system…
Hi Roy,
The only concern I see about sinking current would be at start up. The TPS40170 disables the low side FET during start up into a pre-biased output, so it will not be able to sink current during startup. Once startup is complete, it should be…
Hi Sergio,
I agree with Robert that using our latest generation active clamp controller, UCC28782, will greatly reduce the amount of components because it integrates much more of these functions. To answer your questions:
1. Q100, Q101 and D101 eliminate…
Hi Mark,
I can't say for sure, because the schematic and BOM have the fuse holder listed rather than an actual part number for the fuse. However, it was likely the 37216300411 from Little Fuse, because it uses that style fuse holder and has an appropriate…
