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Texas Instruments TPS2373 | Demoboard TPS2373-3EVM-024
IEEE 802.3bt PoE high-power PD interface with advanced startup
Overview
| Topology | Other Topology |
| Input voltage | 0-57 V |
| Output 1 | 12.14 V / 4.25 A |
| IC revision | A |
Description
The TPS2373 contains all of the features needed to implement an IEEE802.3at or IEEE802.3bt (draft) (Type 1-4) powered device (PD). The low internal switch resistance allows the TPS2373-4 and TPS2373-3 to support high power applications up to 90 W and 60 W respectively. Assuming 100-meter CAT5 cable, this translates into 71.3 W and 51 W at PD input.The TPS2373 operates with enhanced features.The Advanced Startup function for DC-DC results in a simple, flexible, and minimal system cost solution, while ensuring that IEEE802.3bt (draft) startup requirements are met. It helps to reduce the size of the low voltage bias capacitor considerably. It also allows long DC-DC converter soft-start period and enables the use of a low-voltage PWM controller.The Automatic MPS function enables applications requiring very low power standby modes. The TPS2373 automatically generates the necessary pulsed current to maintain the PSE power. An external resistor is used to enable this functionality and to program the MPS pulsed current amplitude.
Features
- IEEE 802.3bt (Draft) PD Solution for Type 3 or Type 4 PoE
- Supports Power Levels for Type-4 ( TPS2373-4) 90-W and Type-3 ( TPS2373-3) 60-W Operation
- Robust 100 V Hotswap MOSFET
- TPS2373-4 (typ.): 0.1-Ω, 2.2-A Current Limit
- TPS2373-3 (typ.): 0.3-Ω, 1.85-A Current Limit
- Allocated Power Indicator Outputs
- Advanced Startup for DC-DC
- Simplifies Downstream DC-DC Design
- Compliant to PSE Inrush
- Automatic Maintain Power Signature (MPS)
- Auto-adjust MPS for Type 1-2 or 3-4 PSE
- Supports Ultra-Low Power Standby Modes
- Primary Adapter Priority Input
- Supports PoE++ PSE
- -40°C to 125°C Junction Temperature Range
- 20-lead VQFN Package
Typical applications
- Security Cameras
- IEEE 802.3bt (Draft) Compliant Devices, 4PPOE, Pass-through System, Systems using Redundant Power Feeds
- Multiband access points, Pico-base Stations, Video and VoIP Telephones
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | Size | Q | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Winding Style | Number of windings | L1 (µH) | IR (mA) | RDC max. (Ω) | VR (V) | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT (V (AC)) | Mount | L (µH) | LSmin. (nH) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 150060YS75000 | SPEC | 25 files RAY files
| Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 590 | Yellow | 595 | 120 | 2 | AlInGaP | 140 | – | – | 0603 | – | – | – | 1.6 | 0.8 | 0.7 | – | Tape and Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +85 °C | – | SMT | – | – | ||
 | 742792641 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | 0603 | – | – | – | 1.6 | 0.8 | 0.8 | 0.3 | – | 300 | 450 | 250 MHz | 2000 | 0.15 | High Current | – | 1 | – | 2000 | 0.15 | – | – | – | – | – | -55 °C up to +125 °C | – | SMT | – | – | ||
 | 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 | – | – | – | 970 | – | – | 0.035 | – | sectional | 2 | 250 | 2000 | 0.035 | 80 | – | – | – | – | – | 1000 | SMT | 250 | 1500 | ||
 | 885012006060 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | 330 pF | ±5% | 0603 | 1000 | 10 GΩ | NP0 Class I | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | 50 | – | – | – | – | -55 °C up to +125 °C | – | – | – | – | ||
 | 7490220122 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LAN LAN Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | 17.55 | 16 | 98.8 | 13.97 | – | – | – | – | – | – | 4PPoE (to 900 mA) | – | – | 350 | – | – | – | 10/100/1000BASE-T | 1 | 4PPoE (up to 1000 mA) | No | -40 °C up to +105 °C | 1500 | SMT | 350 | – | ||
 | 750317065 | SPEC | – | 5 files | Active i| Production is active. Expected lifetime: >10 years. | – | – | – | – | – | – | – | – | – | – | EFD25 | – | – | – | 27.03 | 32.45 | 13.97 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 325 | SMT | 30 | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 150060YS75000 | SPEC | |
| 742792641 | SPEC | |
| 744272251 | SPEC | |
| 885012006060 | SPEC | |
| 7490220122 | SPEC | |
| 750317065 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | Size | Q | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Winding Style | Number of windings | L1 (µH) | IR (mA) | RDC max. (Ω) | VR (V) | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT (V (AC)) | Mount | L (µH) | LSmin. (nH) | Samples |
|---|