IEEE 802.3at PoE High-Power PD interface with AUX Control
Product details
Parameters
Package | Pins | Size
Features
- IEEE 802.3at Type-2 Hardware Classification with Status Flag
- Adapter Priority Input
- DC/DC Converter Enable
- Robust 100 V, 0.5-Ω Hotswap MOSFET
- Operating Current up to 850 mA
- 1-A (Typical) Operating Current Limit
- 15 kV and 8 kV System-level ESD Capability
- PowerPAD HSOP Package
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Description
This 8-pin integrated circuit contains all of the features needed to implement an IEEE802.3at type-2 powered device (PD). The low 0.5-Ω internal switch resistance, combined with the enhanced thermal dissipation of the PowerPAD™ package, enables this controller to continuously handle up to 0.85 A. The TPS2378 features an auxiliary power detect (APD) input, providing priority for an external power adapter. It also features a 100-V pass transistor, 140-mA inrush current limiting, type-2 indication, auto-retry fault protection, and an open-drain power-good output.
Technical documentation
= Top documentation for this product selected by TI
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | TPS2378 IEEE 802.3at PoE High-Power PD Interface datasheet (Rev. C) | Jul. 23, 2015 |
| Selection guide | Power Management Guide 2018 (Rev. R) | Jun. 25, 2018 | |
| User guide | TPS2378EVM-602 Evaluation Module User's Guide (Rev. A) | Jul. 31, 2017 | |
| Application note | Dual TPS2378 PD for 51-W High-Power Four-Pair PoE (Rev. A) | Jun. 01, 2016 | |
| Technical articles | May the forced UPOE be with you | Jun. 15, 2015 | |
| Application note | Lightning Surge Considerations for PoE Powered Devices | Apr. 30, 2015 | |
| Technical articles | Simplifying higher current split-rail designs with Fly-Buck converters | Mar. 05, 2015 | |
| Technical articles | Watch your Power over Ethernet OPEX or risk obsolescence! | Oct. 09, 2012 | |
| User guide | TPS2378EVM-105 User's Guide | Mar. 20, 2012 | |
| Application note | Advanced Adapter ORing Solutions using the TPS23753 (Rev. A) | Feb. 09, 2009 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
TPS2378EVM-105
Description
The Texas Instruments TPS2378EVM-105 evaluation module (EVM) helps designers evaluate the performance of the TPS2378 IEEE 802.3at PoE High-Power PD Interface with AUX Control. The EVM is designed to look like the front end of any Power Over Ethernet (PoE) PD module. An RJ-45 connector is provided to (...)
Features
- 100 V, 0.5 ⦠Hotswap MOSFET
- 15 kV/8 kV System-Level ESD Capability
- DC/DC Converter Enable
- PowerPad⢠SO-8 Package
- Adapter Priority Input
- IEEE 802.3at type-2 hardware classification with status flag
TPS2378EVM-602
Description
The TPS2378EVM-602 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the dual TPS2378 four-pair, high power 51W applications. The TPS2378EVM-602 is a Forced UPOE compliant solution that requires no software. The EVM contains header connectors for easy connection to (...)
Features
- 51W High Power 4-Pair PoE (Forced UPOE)
- Logic circuitry keeps converter off until both TPS2378 PDs are powered
- MPS circuit keep PSE ports connected until converter startup
- Load inhibitor circuit (optional) for high power resistive loads
Design tools & simulation
SLVM991A.ZIP (114 KB) - PSpice Model
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
SLUC480.ZIP (452 KB)
Reference designs
PMP10812 — The PMP10812 reference design is ideal for Class 2 PoE PD applications that do not require isolation. The TPS2378 PD controller provides the interface to the PSE. The LM5010 buck converter has an integrated high side FET and external low side diode rectifier for low cost.
Design files
-
download PMP10812 BOM.pdf (102KB) -
download PMP10812 Assembly Drawing.pdf (70KB) -
download PMP10812 PCB.pdf (445KB) -
download PMP10812 CAD Files.zip (447KB) -
download PMP10812 Gerber.zip (303KB) -
download PMP10812 Gerber (ODB).zip (787KB)
PMP11257 — The LM5116 synchronous buck controller provides a high efficiency solution for non-isolated PoE PD applications. The TPS2378 PoE PD controller performs all necessary functions for an IEEE802.3at compliant Class 4 PoE PD. This converter is ideal for any PoE application that demands best (...)
Design files
-
download PMP11257 BOM.pdf (127KB) -
download PMP11257 Assembly Drawing.pdf (186KB) -
download PMP11257 Gerber.zip (486KB)
TIDA-00741 — TIDA-00741 uses two TPS2378 PD controllers for a forced 4-pair UPOE solution to 51W non-standard PoE PD applications. It incorportates the UCC2897A controller in a high-efficiency, great transient response (driven) synch flyback converter capble of 12V at 3.8A.
Design files
-
download TIDA-00741 BOM.pdf (253KB) -
download TIDA-00741 Gerber (from TIDA-00539).zip (2914KB)
PMP9676 — This converter is used for Class 1 PoE PD applications where isolation is not required. The TPS2378 PD controller plus LM5006 buck converter provide 5V/560mA with good efficieny in a small size. The LM5006 can be configured with a diode rectifier for lowest cost or a synchronous FET (...)
Design files
-
download PMP9676 BOM.pdf (95KB) -
download PMP9676 Gerber.zip (638KB)
TIDA-00539 — TIDA-00539 uses two TPS2378 PD controllers for a forced 4-pair UPOE solution to 51W non-standard PoE PD applications. It incorportates the UCC2897A controller in a high-efficiency, great transient response (driven) synch flyback converter capble of 19V at 2.3A.
Design files
-
download TIDA-00539 BOM.pdf (252KB) -
download TIDA-00539 Gerber.zip (2922KB)
PMP10572 — The PMP10572 reference design is an single output isolated Fly-Buck power supply for PoE application. It takes 48V nominal input and provides 12V 1A output. The board is designed with TPS2378(PD controller) to provide 40V-57V input votlage and 12V 1SA output power. The design features the LM5160A (...)
Design files
-
download PMP10572 BOM.pdf (101KB) -
download PMP10572 Gerber.zip (50KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SO PowerPAD (DDA) | 8 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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