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TPS23751: Dual Input Redundant Type2 Power Application

Allan Fan

TI Thinks Resolved
Part Number: TPS23751 Other Parts Discussed in Thread: PMP20859 , TPS23731 Hi team, I know we have reference designs with two PD solutions for dual inputs redundant application but wondering if somehow it's feasible to use just one PD or what are the concerns…
- over 1 year ago
- Power management
- Power management forum

RE: TPS2378: TPS2378

Michael Pahl

Resolved
Hello, This is expected behavior. Having the output voltage never drop is called "smooth transition" or "hitless failover" in PoE market. Please see the following materials for training on this topic: Blog: https://e2e.ti.com/blogs_…
- over 2 years ago
- Power management
- Power management forum

RE: TPS2373: POE 802.3bt Type 4 / Class 8 solution and reference design (TPS2373-4EVM-758)

Michael Pahl

Resolved
Hey Kai, One example is PMP21115. I can send it over email and you can share with the customer. It is a dual PD, dual DCDC design that has power sharing and power limiting. There is also a 12V adapter. the DCDC output is 12V. The adapter and DCDCs combine…
- over 2 years ago
- Power management
- Power management forum
RE: TPS2373: DC Adapter and POE Power transition without failover

Michael Pahl

Hello, 1. Reference Design: https://www.ti.com/tool/PMP20859 2. A transformer that supports 72W output and a 27V-58V input is going to be very large and probably have thermal issues. I would suggest using a buck-boost converter to boost your adapter voltage…
- over 2 years ago
- Power management
- Power management forum
RE: TPS2373: PoE

Michael Pahl

Somehow not all of my resources made it on the post: https://www.ti.com/tool/PMP20859
- over 2 years ago
- Power management
- Power management forum

RE: TPS23753: Advanced Adapter ORing Solutions using the TPS23753

Michael Pahl

Resolved
Hey Jack, 1. The previous design I sent has adapter priority with TPS23730 as does the EVM 2. General – Requires 48-V, isolated output (from mains and ground) adapter • Benefits – Adapter inrush current is managed when the PoE source (PSE) is not present…
- over 2 years ago
- Power management
- Power management forum
RE: TPS2373: TPS2373

Michael Pahl

No, this will not prevent the potential damage. The minimum required circuitry is in the PMP20859. If this post answers your question, please indicate so by marking this thread as resolved. Thank you. Regards, Michael P. Applications Engineer Texas…
- over 2 years ago
- Power management
- Power management forum
TPS2373: Voltage glitch on switching between PoE and DC power supply

Abhishek singh

TI Thinks Resolved
Part Number: TPS2373 Other Parts Discussed in Thread: PMP20859 Hi team We are using TPS2373-4. in one of our application. We are observing Glitch in 5V output power whenever we are switching from DC to POE supply. Our Output requirement is 5V @13A current…
- over 2 years ago
- Power management
- Power management forum

RE: TPS23734: How to apply 3.6 Keeping the PSE Powered With Options 2 and 3(SLVA306A)

Michael Pahl

Resolved
Hello Shinichi, The TPS23734EVM-094 has an adapter for OR-ing option 2. Option 3 puts the adapter on the output, and the diode is not needed. Do you need adapter priority or PoE? For smooth transition, which means the output power is not dropped when…
- over 3 years ago
- Power management
- Power management forum

RE: TPS2373: Please help to check TPS2373 schematic is ok or not.

Thomas Amlee

Resolved
Hi User, Are you intending to do non-standard UPoE or PoE redundancy like PMP20859? Our PMP20859 design is designed to be compliant with IEEE802.3bt & provide hitless redundancy. It is not intended for non-standard methods of >type 2 power (UPoE) since…
- over 4 years ago
- Power management
- Power management forum

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