Hi William,
Thanks for your updates and looks we only have INFO and PASSED items now. INFO marks are not specification failures.
TI’s EVM also has Backoff_Voltage_Ss and Backoff_Time_SS as info. For other items related to SS (short circuit), it…
Hi Jorg,
Thanks for your patience.
1. Could you show the ETH CX A & B connection on the RJ45 PoE output port?
2. Could you show full schematic of TPS23881, like VDD, VPWR, RESET... pins
3. TPS23881 will need a I2C configuration before operating. Do you…
Yes, Our project use a 32.768KHz crystal for MSP430 and we build a batch of boards by ourself. It seems that it need run a special software to gernerate 32.768KHz waveform as you said. For MSP430+TPS23881 source code, it doesn't contain the special software…
Hi Jesus,
Thanks for your patience. It is recommended to turn on the port after detection + classification if you do not an immediate action. This is a safer way than direct turn-on. Meanwhile, most of PD has PSE-PD handshake indication functions (for…
Part Number: TPS23881 Other Parts Discussed in Thread: TPS2372 , Tool/software: 1、how many detection and classing periods are there before power start up?
below is the waveform captured on the dual signature PD VDD, the PSE is TPS23881, PD is TPS2372,…
Hi Diang Xing, We are loading PARITY first and then SRAM Files are located in the target system (i.MX93 Linux kernel 6.1 (modified with TPS23881 driver)) at
/lib/firmware/TPS23881_2_PARITY_v15.bin
/lib/firmware/TPS23881_2_SRAM_v15.bin With how the driver…
Hi Kerim,
If in autonomous mode you may have a overload issue when 3rd 90W load is connected. Assuming your converter will limit the power to 200W, then your PSE input voltage may drop due to overload until reaches TPS23881B1's VPWR UVLO. Then the PSE…
Hi Yao,
In a 802.3BT compliant PSE auto mode, the power cut threshold is 90W for Class-8 PD. If the PSE continuous output power is higher 90W it may turn off the port. A transient power could be 99.9W but not continuous.
Best regards,
Diang
Part Number: TPS23881 Tool/software: Hi,
I'm planning to use TPS23881ARTQT IC for one of our PoE Camera projects (7-pair, 15W each).
I have a coup le of doubts to clarify,
I am powering the entire system from a battery (automotive application). However…
Part Number: TPS23881 Tool/software: We plan to use TPS23881 Type-4 4 Pair 8 Channel PSE controller for our new project. What is the maximum number of RJ45 connectors that can be connected to a single chip? We have a requirement of 8x 10G RJ45 ports…