TPS2372-4RGWT - IEEE 802.3bt PoE PD Controller 90W | TI
Référence : TPS2372-4RGWT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1 000 | $0 | $0,00 |
TPS2372-4RGWT Présentation
A PoE PD controller is the front-end power-management IC that resides inside a powered device such as an IP camera, wireless access point, or LED luminaire. It performs detection, classification, and inrush-current limiting so the power-sourcing equipment (PSE) in the network switch can safely identify and power the device over the Ethernet cable. Within the power-management hierarchy, it sits between the RJ45 magnetics/diode bridge and the isolated DC-DC converter that generates the system rails.
Key features of the TPS2372-4 include support for IEEE 802.3at (PoE+) and 802.3bt draft Type 1-4 power classes, Automatic MPS to maintain power through low-load periods, and Autoclass for accurate power allocation reporting to the PSE. The -4 variant's low internal switch resistance enables full 90 W Type 4 operation, while the related TPS2372-3 supports up to 60 W.
Technically, the device integrates the detection and classification signature resistors, a hot-swap MOSFET with current limiting, thermal protection, and fault supervision. The low switch resistance minimizes conduction losses at the multi-ampere input currents demanded by Type 3 and Type 4 systems, improving overall efficiency and reducing heatsinking requirements.
Typical applications include 802.3bt high-power LED lighting, 5G small cells and wireless access points, PTZ IP security cameras, and industrial networked devices where a single Ethernet cable delivers both data and up to 90 W of power.
When designing, place the IEEE signature components (the 24.9 k-ohm detection resistor and classification resistors) directly at the VDD/RTN pins, and verify the inrush and operating current limits against your isolated converter's input capacitance to avoid nuisance tripping during startup.
This page synthesizes distributor availability, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour TPS2372-4RGWT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec TPS2372-4RGWT (même facteur de forme et même empreinte) — différant par Function, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
TPS2372-3RGWR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS2373-4RGWR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS2372-3RGWT
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.15 / unité
Voir la fiche technique →TPS2373-3RGWR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TPS2378RGWR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TPS2372-4RGWT Valeurs maximales et caractéristiques électriques
| Fonction | PoE Powered Device (PD) Controller |
| Number of Channels | 1 |
| PoE Standards Supported | IEEE 802.3at (PoE+), IEEE 802.3bt (draft) |
| PoE Type Support | Type 1-4 |
| Maximum Power | 90 W |
| Internal Switch | Yes |
| Supply Voltage Range | 0 V to 57 V |
| Courant d'alimentation | 550 uA |
| Automatic MPS | Yes |
| Autoclass | Yes |
| Auxiliary Sense | No |
| Température de fonctionnement | -40C to +125C (TJ) |
| Boîtier | 20-VQFN (5x5 mm) with exposed pad |
| Type de montage | Surface Mount |
| Part Status | Active |
Guide de configuration des broches du TPS2372-4RGWT 20-vqfn (5x5 mm) with exposed pad
Configuration des broches du TPS2372-4RGWT (boîtier 20-vqfn (5x5 mm) with exposed pad). Ce composant de puissance comporte des bornes de grille, de drain et de source. Pour les boîtiers non polarisés, consultez la fiche technique du fabricant pour l'orientation exacte de la broche 1 et les détails de l'empreinte. Les applications courantes incluent la conception d'alimentations, la commande de moteurs et la commutation de charges.
Aucune donnée de brochage détaillée disponible pour TPS2372-4RGWT.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
TPS2372-4RGWT convient pour 6 applications: High-Power PoE LED Lighting, IEEE 802.3bt Wireless Access Points, PTZ IP Security Cameras, Industrial Networked Devices and IoT Gateways, PoE-Backed Thin Clients and Display Terminals, PoE Splitter and Midspan Power Modules.
High-Power PoE LED Lighting
The TPS2372-4RGWT fits 802.3bt LED luminaire designs where a single Ethernet cable carries both control data and up to 90 W of drive power. Its Type 4 capability and low internal switch resistance minimize input-side conduction loss at the multi-ampere currents typical of 90 W luminaires, while Autoclass lets the PSE allocate only the power the fixture actually draws, increasing switch port utilization. TI's TPS2372-3EVM-757 evaluation module validates the family in PoE lighting circuits. The controller's inrush limiting protects the downstream constant-current LED driver input capacitors, and Automatic MPS keeps power alive through dimming-related low-load intervals, avoiding nuisance PSE disconnects.
Recommandé
IEEE 802.3bt Wireless Access Points
Multi-radio 802.11ax/802.11be access points and 5G small cells routinely consume 40-70 W, which only 802.3bt Type 3/4 PoE can deliver over one cable. The TPS2372-4RGWT provides the full Type 1-4 detection and classification front-end with 0 V to 57 V input tolerance, handling the wide voltage variation on long cable runs. Its 550 uA supply current keeps idle signature loading minimal, and the integrated hot-swap MOSFET with current limiting protects the isolated DC-DC converter during cable insertion. Autoclass reporting lets dense campus switches reclaim unused power budget, allowing more APs per switch chassis.
Recommandé
PTZ IP Security Cameras
Pan-tilt-zoom cameras with infrared illuminators and heaters peak well above the 25.5 W limit of PoE+, making 802.3bt Type 4 (90 W) mandatory. The TPS2372-4RGWT qualifies the PD for the full Type 4 power budget, and its low switch resistance limits voltage drop at peak motor and heater inrush currents, preserving headroom for the isolated converter. Automatic MPS maintains power when the camera momentarily reduces load during idle pan cycles, preventing PSE disconnect. The -40C to +125C junction rating supports outdoor enclosures, and the 20-pin VQFN exposed pad simplifies thermal design in compact camera housings.
Recommandé
Industrial Networked Devices and IoT Gateways
Industrial gateways, edge-compute nodes, and IP intercoms benefit from single-cable power and data deployment where local AC outlets are impractical. The TPS2372-4RGWT provides IEEE 802.3at/802.3bt compliant detection, classification, and fault protection with a 0 V to 57 V operating envelope that absorbs surge and cable-length variation on factory floor runs. Its integrated solution replaces discrete hot-swap MOSFETs and signature resistor networks, cutting BOM count. Autoclass ensures the industrial PoE switch budget is used accurately, and the -40C to +125C junction range matches the environmental profile of DIN-rail and IP67 enclosure installations.
Recommandé
PoE-Backed Thin Clients and Display Terminals
Conference-room touch panels, digital signage players, and PoE thin clients draw 50-90 W in compact enclosures without room for external power bricks. The TPS2372-4RGWT's 802.3bt Type 4 support delivers the full 90 W budget, and its integrated pass switch removes the discrete MOSFET, simplifying layout in tight display bezels. Inrush limiting protects large bulk capacitance on the display logic rails, while thermal shutdown and fault supervision safeguard the isolated converter. Autoclass reporting lets IT infrastructure account for real terminal consumption across large fleets of wall-mounted units powered entirely over structured cabling.
Recommandé
PoE Splitter and Midspan Power Modules
PoE splitter modules that convert inline 802.3bt power to barrel-jack DC for legacy equipment need a robust PD front-end with wide input tolerance. The TPS2372-4RGWT handles the 0 V to 57 V input span and full Type 1-4 classification, allowing splitters to pass up to 90 W to the downstream regulator. Its low internal switch resistance limits thermal rise inside sealed splitter housings at the approximately 1.7 A continuous input of a 90 W splitter, and Automatic MPS keeps legacy loads powered through standby intervals. The exposed-pad VQFN package supports compact PCB designs typical of inline splitter form factors.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TPS2372-4RGWT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TPS2372-3RGWR | TPS2373-4RGWR | TPS2378RGWR |
|---|---|---|---|---|
| Package | 20-VQFN (5x5 mm) EP | 20-VQFN (5x5 mm) - same | 20-VQFN (5x5 mm) - same | 20-VQFN (5x5 mm) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| PoE Standards | 802.3at, 802.3bt Type 1-4 | 802.3at, 802.3bt Type 1-3 | 802.3at, 802.3bt Type 1-4 | 802.3bt-ready |
| Automatic MPS | Yes | Yes | Yes | Yes |
| Adapter Priority / Aux Sense | No | No | Yes (pin 10) | Yes (APS) |
| Operating Temperature | -40C to +125C (TJ) | -40C to +125C (TJ) | -40C to +125C (TJ) | -40C to +125C (TJ) |
Principaux différenciateurs
- Full 90 W Type 4 power capability (vs TPS2372-3RGWR)
- Autoclass power reporting (vs TPS2373-4RGWR)
- Integrated internal switch (vs TPS2378RGWR)
Notes de conception
At 90 W (Type 4), input current at nominal 53 V is roughly 1.7 A, and substantially higher at the low end of the PSE voltage range on long cable runs. Verify the internal switch conduction loss (I-squared-R) plus control and gate-drive losses against the VQFN exposed-pad thermal impedance, and size the downstream isolated converter's input bulk capacitance so the TPS2372-4 inrush and current limits are not tripped during worst-case startup. These dissipation figures are engineering estimates based on stated power levels, not datasheet values.
Place the IEEE 802.3 detection (24.9 k-ohm) and classification resistor networks directly at the VDD and RTN pins with short, low-inductance traces, since lead inductance and PCB leakage can corrupt the detection and classification signatures read by the PSE. Solder the exposed pad to a solid ground pour with multiple thermal vias to dissipate switch conduction heat. Keep the hot-swap loop (input bulk cap to switch to converter) compact to minimize parasitic ringing during fault transients.
Do not assume the TPS2372-4 and TPS2373-4 are fully interchangeable despite the identical footprint: the TPS2373 exposes advanced-startup, adapter-priority, and UVLO-select pins where the TPS2372 uses them differently, and the TPS2372's Autoclass is absent on the TPS2373 (per TI E2E guidance). Also note the TPS2372-4 has no auxiliary sense; retrofitting adapter input requires a different part. Finally, 802.3bt draft-era documentation may differ from final-standard behavior - always use the latest TI datasheet revision.
Estimated: at 90 W delivered and assuming roughly 1 ohm-class switch resistance, switch conduction loss is on the order of 2-3 W plus control losses. With a compact 5x5 mm VQFN, junction temperature rise is dominated by PCB copper area, so provide at least 1 square inch of 2-oz copper on the exposed-pad layer in confined housings such as camera or luminaire enclosures, and derate at ambient temperatures above 60C. Validate with thermal imaging on the finished board.
Informations de conformité
Compliance data was not present in the retrieved web data; consult the TI product page for current RoHS/REACH status.
