| Electronics > Projects, Designs, and Technical Stuff |
| "over current" use of a Pulse transformer - ( or an alternative ) |
| (1/10) > >> |
| mrpackethead:
https://product.tdk.com/info/en/catalog/datasheets/090007/trans_alt4532p_en.pdf TDK have these small pulse transformers which look really useful, as they have a very small footprint which makes them useful for tight packs. they are rated for POE+ or 600mA. I want to run run at 900mA, which is what the 802.3bt standard for POE can go to. Other than thermal considerations, ( the device would potentially be disipitating approximately twice the power from 600 to 900mA ) would there be any other issues. In this use case, i am confident that i can provide considerable heat releif and cooling, so it might just be possible to get past this issue. |
| T3sl4co1l:
If you're okay with qualifying for the application then yeah, there's no one else stopping you from doing so, and it is at your own risk. Those could also be paralleled, without much impact on frequency response. Tim |
| 2N3055:
Tim is right on the money. Put two in parallel. |
| mrpackethead:
In my applicaiton, i'm just running 100M ethernet. It's worth considering using them in parallel, however part of the attraction is the size. For this application i can design cooling in from the start. |
| T3sl4co1l:
Is the cure worse than the poison? -- how much are you spending on high-k thermal goop / potting / resin / thermal pads keeping those wires cool, and how much space is taken up by that plus the heatsinking, versus just using two, or using a higher rated part? Tim |
| Navigation |
| Message Index |
| Next page |