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Texas Instruments TPS2373-4RGWR | Demoboard PMP21103
Class 5 PoE PD (12 V/2.5 A) supply reference design with smooth transition to auxiliary
Overview
| Topology | Other Topology |
| Input voltage | 42.5-57 V |
| Output 1 | 12 V / 2.5 A |
| IC revision | B |
Description
This reference design implements an IEEE802.3bt compliant Class 5 Power over Ethernet (PoE) Powered Device (PD) with smooth transition between the PoE input and an auxiliary supply connected to the output. The design consists of a 12-V/2.5-A active clamp forward converter utilizing the UCC2897A controller and allows one PoE Power Source Equipment (PSE) supply and one AC/DC wall adapter auxiliary supply to be used in order to decrease the probability of power and data loss in your system. An IEEE802.3bt compliant TPS2373-4 high power PD controller is utilized to control all PoE functions.
Features
- Smooth transition when switching between PoE input and 12-V adapter on output
- 89% efficiency with 12-V/2.5-A output and PoE input (FET OR-ing)
- Diode OR-ing option for lower cost
Typical applications
- Outdoor backhaul unit, Small cell base station, WLAN/Wi-Fi access point
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | Size | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Winding Style | Number of windings | L1 (µH) | Zmax (Ω) | IR (mA) | RDC max. (Ω) | VR (V (DC)) | Z (Ω) | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT (V (AC)) | Mount | L (µH) | LSmin. (nH) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012209028 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | 10 µF | ±10% | 1210 | 5 | 0.01 GΩ | X7R Class II | 3.2 | 2.5 | 2 | 0.3 | 7" Tape & Reel | – | – | – | – | – | – | 25 | – | – | – | – | – | -55 °C up to +125 °C | – | – | – | – | ||
 | 744272251 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-SL5 SMT Common Mode Line Filter | – | – | – | – | – | – | 10 | 8.7 | 6.5 | – | – | sectional | 2 | 250 | 970 | 2000 | 0.035 | 80 | – | – | – | – | – | – | 1000 | SMT | 250 | 1500 | ||
 | 744273801 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-SL5 HC SMT Common Mode Line Filter | – | – | – | – | – | – | 9.5 | 8.3 | 5 | – | – | sectional | 2 | 9 | – | 3500 | 0.011 | 80 | 800 | – | – | – | – | -40 °C up to +125 °C | 500 | SMT | 9 | 970 | ||
 | 7490220122 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LAN LAN Transformer | – | – | – | – | – | – | 17.55 | 16 | 98.8 | 13.97 | – | – | – | 350 | – | – | – | – | – | 10/100/1000BASE-T | 1 | 4PPoE (up to 1000 mA) | No | -40 °C up to +105 °C | 1500 | SMT | 350 | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012209028 | SPEC | |
| 744272251 | SPEC | |
| 744273801 | SPEC | |
| 7490220122 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | Size | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Winding Style | Number of windings | L1 (µH) | Zmax (Ω) | IR (mA) | RDC max. (Ω) | VR (V (DC)) | Z (Ω) | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT (V (AC)) | Mount | L (µH) | LSmin. (nH) | Samples |
|---|