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Texas Instruments TPS2372-3 | Demoboard PMP23366
Dual-input redundant PoE Class 6 PD with smooth transition and telemetry reference design
Overview
| Topology | LAN / POE |
| Input voltage | 42.5-57 V |
| Output 1 | 5 V / 9 A |
| IC revision | A |
Description
This design implements a Power over Ethernet (PoE) Class 6 Powered Device (PD) with dual redundant PoE inputs and smooth transition between these inputs and a an auxiliary input. Two TPS2372-3 PD controllers are utilized for high power PoE control up to 51W. A 5V at 9A active clamp forward converter is implemented with the PWM portion of a TPS23734 IC. An INA237A provides input voltage/current/power/temperature measurements via I2C.
Features
- Dual redundant PoE inputs plus auxiliary 48V input
- Smooth transition between all inputs
- PoE Port 1 priority over PoE Port 2
- Auxiliary priority over either PoE Port
- Telemetry for input voltage, current and power via I2C
- 88% efficiency from PoE input; 90% efficiency from auxiliary input
Typical applications
- Occupancy detection (people tracking, people counting), PTZ wired IP camera
- WLAN/Wi-Fi access point
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Q(%) | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT(V (RMS)) | Mount | L(µH) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 100 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0603 | Q-Factor1000 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | Operating Temperature -55 °C up to +125 °C | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 470 pF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance470 pF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | Operating Temperature -55 °C up to +125 °C | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 4.7 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance4.7 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | Operating Temperature -55 °C up to +125 °C | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | – | Dissipation Factor3 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | Operating Temperature -55 °C up to +125 °C | – | – | – | |||||
 | WE-LAN LAN Transformer, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LAN LAN Transformer | – | – | – | – | – | – | – | – | Length17.55 mm | Width16 mm | Height98.8 mm | Pad Dimension13.97 mm | – | Data rate10/100/1000BASE-T | Ports1 | PoE4PPoE (up to 1000 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (RMS) | MountSMT | Inductance350 µH |