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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 | 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 | 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 | 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 | 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 PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | WE-LAN LAN Transformer | – | – | – | – | – | – | 18.04 | 14.7 | 9.05 | 13.97 | – | – | – | 350 | – | – | – | – | – | 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 PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | 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 |
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