Other Parts Discussed in Thread: TPS23754 , TPS23756 Team,
Customer needs POE+ PD solution. How do we determine the best part for them to use? 54 or 56?
They need 20W usable power at PD and will also need to support a 12V local power adaptor.
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I recommend the TPS23754, TTPS23754-1 , or TPS23756.
These devices are IEEE 802.3at standard compliant. IEEE802.3at requires PD support of 2-event hardware classification in conjunction with Class 4.
The parts actually will carry over 700mA with…
Hi Zhang,
Sorry that PoE team currently are short of resource to do customer review. Please check with attached checklist and PMP23278 12V reference board.
Let me know if you have further questions or concerns. Thanks!
e2e.ti.com/.../0550.PoE-PD…
Part Number: TPS23754 Hi,
The device was MP already and got some devices needs RMA. This device failed while operate in low temperature condition (under 0 degree C)
Could you please help to check that is there anything can fix this issue, thank you…
Hi, Tom
I use the option3 oring, and for test, I didn't apply the adapter power, I tied T2P, APD and PPD to RTN.
Firstly, I use a different transformer, then I changed to the reference transformer(PA2649NL), the result were same. pls see the attached…
Hi young chen,
Thanks for reaching out!
Sorry that PoE team currently are short of resource to do customer review. Please check with attached checklist and PMP20220 and TIDA00617 reference boards. Let me know if you have further questions or concerns…
WHen there are questions about standard compiance, you should always refer to the IEEE 802.3at standard. http://standards.ieee.org/about/get/802/802.3.html Note that at the next general base-standard update, this will be rolled into clause 33 and others…
Hi Tommy,
R16 is mainly for current limiting for charging the PSR cap C40 during startup. R16 also increases damping factor against noise during steady state.
For your 10V output:
1. You need to make R18 connected: PSRS is only open if your 2nd…
Hi Brl,
Thanks for reaching out!
Sorry that PoE team currently are short of resource to do customer review. Please check with attached checklist for PD and I attached one PD + TPS23861 passthrough 2-ports board schematic could be similar.
Besides…
Gorlic, I looked back over this thread and do not see your schematic file and layout. If you don't want to post it here, you can send it to TI through the distributor Arrow. Or just attach it to the thread. My responses below are with respect to the TPS23754EVM…
