Part Number: TPS2375-1 I need to hold up the incoming IEEE 802.3af PD power bus during 300ms power interruptions, avoiding a PoE re-handshake.
Theoretically, if I have a large cap in the PD that slowly charges up to the incoming bus potential (48VDC), then…
Other Parts Discussed in Thread: TPS2375 , TPS23758EVM-080 , TPS23753A , TPS23755EVM-894 , TPS23758 Hi,
I'm designing a PoE device that should be powered either by the PoE connector or a DC adaptor (prefer 12V)
The required output DC voltage is 5V (VDD…
Other Parts Discussed in Thread: TPS2375EVM Hi,
I have let the reference design found in www.ti.com/.../tps2375-1.pdf (page 1) made as part of a PoE application. Triple-checked everything, but this part doesn't work.
Even the detection phase goes wrong…
Part Number: TPS2375
Has anyone tried using the TPS2375 with the Cqenpr brand of PoE switches? When I look at the scope grab on page 1 of the TPS2375 data sheet it looks like the voltage is rising in a slow and controlled manner. When I connect my device…
Hi Broughton, Could you please let me know about two questions from my customer.
1. Is the reason why the output of TPS2375 returns to 46V after dropping to 5V is that 5V will not be output from LMR16030 if it drops any further? Or is it checked many times…
Part Number: TPS2375 Hello
Im designing a PD device and have used the TPS2375 along with a 60-5v simple switcher, battery charger and 3v3 LDO. I have two questions
1) On the TPS2375, all documentation shows that the incoming negative rail after the bridge…
Hello Frank,
You are correct, the TPS2375 is a type-1 PD, which maximum power is 13W. For 24V output, the max current would then be ~0.5A.
If you want to stick with a buck topology, I would suggest the TPS2378 and pairing it with a pwm controller. An…
I have attached the board schematic below. I had designed it based on the TPS2375-1 datasheet. The scope trace had Ch1 between +Vin and -Vin on the DC/DC converter. CH2 was not connected.
POE_VP and POE_VN is supplied directly from an RJ-45 jack…
Part Number: TPS2375 Other Parts Discussed in Thread: LM2592HV Hi
I have used 7499210124A as a RJ45 connector and I need to convert the POE voltage to 3.3 volt, so I have some questions:
1- Is it necessary to use TPS2375 or can I connect the POE voltage…
Hi Daniel,
We do apologize for the delayed reply, as many of our apps engineers were not available this past weekend.
The TPS23861 is .at compliant which means it should be interoperable with both Type 2 and Type 1 (some prefer to refer to Type 1 as…