TPS2372-3RGWT - 802.3bt PoE PD Controller 60W | Texas Instruments
MPN： TPS2372-3RGWT ✓ 啟用中TPS2372-3RGWT 概覽
A PoE PD interface controller is the front-end power management IC that resides in the powered device of a PoE system. It performs detection, classification, inrush current limiting, and disconnect identification, then hands off power to an isolated or non-isolated DC-DC converter. It sits at the top of the PoE power hierarchy: PoE PD controller -> PoE power interface IC -> power management IC -> semiconductor.
Key features include support for IEEE 802.3at (Type 2) and IEEE 802.3bt (Type 1-4) classes, Automatic MPS (Maintain Power Signature) that reduces standby power in battery-backed applications, and Autoclass that enables downstream converters to lower power losses. Protection circuits cover undervoltage lockout, overcurrent, and thermal shutdown. PGOOD status indication allows clean sequencing of the downstream converter.
The TPS2372-3 variant is optimized for 60 W applications with low internal switch resistance, while the TPS2372-4 variant supports up to 90 W Type 4 designs. According to the Texas Instruments product page, the TPS2372 family contains all features needed to implement an IEEE 802.3at or 802.3bt (draft) Type 1-4 powered device. Detection and classification compliance ensures interoperability with all standard PSE (power sourcing equipment) vendors.
Typical applications include LED lighting fixtures, IP security cameras, wireless access points, 5G small cells, VoIP telephones, and network switches. Its wide input tolerance (0 V to 57 V per distributor data) and integrated pass transistor reduce bill-of-materials count versus discrete MOSFET solutions.
For design, budget the inrush current limit against downstream converter input capacitance, and use the PGOOD output to enable the converter only after PoE handshake completes.
This page adds distributor pricing, drop-in alternatives, and practical design notes beyond the manufacturer datasheet.
直接替換替代品，適用於 TPS2372-3RGWT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TPS2372-3RGWT （相同外形與佔位） — 差異在於 Function, Package.
TPS2372-4RGWT
✅ 直接替換聯絡詢價
查看資料表 →TPS2373-3RGWR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS2373-4RGWR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS2372-3RGWT 最大額定值與電氣特性
| 功能 | PoE Powered Device (PD) Interface Controller |
| Standards Compliance | IEEE 802.3at (PoE+), IEEE 802.3bt |
| 通道數 | 1 |
| Max Supported Power | 60 W (TPS2372-3, Type 3) |
| 輸入電壓範圍 | 0 V to 57 V |
| Internal Switch Resistance | Low (optimized for high power) |
| Special Features | Automatic MPS, Autoclass |
| Protection Features | Overcurrent Protection, Undervoltage Protection, Thermal Protection |
| Status Indication | PGOOD output |
| PD Detection | Detection and disconnect identification |
| 封裝 | 20-VQFN (5x5 mm) |
| 安裝類型 | Surface Mount |
| Classification Support | Type 1-4 classes |
| RoHS 狀態 | Compliant |
| Packaging | Tape & Reel (RGWT suffix) |
TPS2372-3RGWT 20-vqfn (5x5 mm) 腳位配置指南
TPS2372-3RGWT（20-vqfn (5x5 mm) 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： TPS2372-3RGWT.
請參閱 資料表 以查看完整腳位配置。
典型應用
TPS2372-3RGWT 適用於 6 應用s: PoE LED Lighting, IP Security Cameras, Wireless Access Points, 5G Small Cells and Network Infrastructure, VoIP Telephones, Industrial Network Endpoints.
PoE LED Lighting
The TPS2372-3RGWT is TI's recommended front-end for high-power PoE lighting, as demonstrated by the TPS2372-3EVM-757 reference design for IEEE 802.3bt Type 3 luminaires. Its 60 W rating comfortably covers Type 3 LED fixtures, while Automatic MPS reduces standby draw in emergency-lighting battery-backed systems. Autoclass signals the fixture's true power draw to the PSE, allowing downstream LED drivers to optimize efficiency and avoid over-provisioning. Integrated detection, classification, and disconnect identification ensure interoperability with all standard switches and midspans.
推薦
IP Security Cameras
PoE-powered IP cameras benefit from the TPS2372-3RGWT's single-chip PD interface: it integrates the pass switch, detection, classification, and inrush limiting, minimizing PCB area in compact dome and bullet camera housings. The 60 W capability with headroom supports cameras with heaters, IR illuminators, and PTZ motors that exceed 25.5 W PoE+ levels. PGOOD output sequences the camera's video SoC power rail only after a valid PoE handshake, and Automatic MPS allows the camera to remain powered through low-power sleep states without PSE disconnect.
推薦
Wireless Access Points
High-throughput 802.11ax/802.11be wireless access points routinely draw 30-60 W, exactly the range the TPS2372-3RGWT covers as an IEEE 802.3bt Type 3 PD controller. Its low internal switch resistance minimizes front-end conduction loss at multi-amp loads, preserving thermal margin inside sealed ceiling-mount enclosures. Autoclass lets the AP report actual consumption so the switch can allocate budget across more ports. Detection and classification compliance guarantees interoperability across all vendors' PoE switches and midspans in enterprise deployments.
推薦
5G Small Cells and Network Infrastructure
Outdoor 5G small cells and street-mounted network nodes are commonly fed by PoE to avoid separate power cabling. The TPS2372-3RGWT's 57 V input tolerance per distributor data accommodates the full IEEE 802.3bt voltage range including cable drops, while undervoltage, overcurrent, and thermal protection guard against faulted cabling and lightning-induced transients upstream. Automatic MPS supports remote power cycling and low-power night modes, and PGOOD-based sequencing prevents the radio SoC from booting on unstable PoE power during handshaking.
推薦
VoIP Telephones
PoE-powered VoIP desk phones use the TPS2372-3RGWT to interface the RJ45 data/power input with the phone's DC-DC converter. Single-channel operation, integrated pass switch, and PD detection remove discrete component count, fitting the tight board area under a phone keypad assembly. Automatic MPS keeps the phone registered in standby at low draw, while classification ensures the PSE allocates only the class the phone requires, freeing switch power budget for other endpoints. PGOOD gating gives clean converter start-up for the voice DSP and LCD rails.
推薦
Industrial Network Endpoints
Industrial sensors, controllers, and IIoT nodes increasingly adopt PoE for combined data and power over a single cable run. The TPS2372-3RGWT provides the standards-compliant PD front end with thermal protection suited to enclosed DIN-rail and panel-mounted equipment, and its detection and disconnect identification support orderly asset management by the network. The 60 W envelope covers edge-compute nodes with local displays or gateways. Its 0 V to 57 V tolerance per distributor data rides through long-cable voltage drops typical of factory floor installations.
推薦
推薦產品摘要
工程參考資料，適用於 TPS2372-3RGWT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TPS2372-4RGWT | TPS2373-3RGWR | TPS2373-4RGWR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 20-VQFN (5x5 mm) | 20-VQFN (5x5 mm) - same | 20-VQFN (5x5 mm) - same | 20-VQFN (5x5 mm) - same |
| PoE Standards | 802.3at, 802.3bt Type 1-4 | 802.3at, 802.3bt Type 1-4 | 802.3at, 802.3bt | 802.3at, 802.3bt |
| Max Power | 60 W | 90 W | 60 W | 90 W |
| Autoclass | Yes | Yes | No | No |
| Advanced Startup / Adapter Priority / UVLO Select | No | No | Yes | Yes |
主要差異化特點
- Autoclass support for power-budget optimization (對比TPS2373-3RGWR)
- 60 W cost-optimized rating with same footprint as 90 W part (對比TPS2372-4RGWT)
- Trade-off: lower power ceiling than Type 4 parts (對比TPS2372-4RGWT)
設計說明
Budget the PoE inrush current limit against the downstream converter's total input capacitance. If bulk capacitance is too large, the PD controller will charge it beyond the inrush limit and trip the PSE; if too small, the converter may drop out on load steps. Use the PGOOD output to enable the downstream DC-DC converter only after the IEEE detection, classification, and inrush phases complete. Per the TI TPS2372 datasheet, follow the recommended capacitor ranges for the chosen power class.
The 20-VQFN (5x5 mm) package dissipates front-end conduction loss through its exposed thermal pad at multi-amp PoE loads. Connect the thermal pad to a solid ground pour with an array of thermal vias to inner layers. Keep the kelvin-sense routing for the current-limit circuit short and away from switching nodes of the downstream converter to prevent false overcurrent trips. Place the classification resistor (CLS) network close to the IC with clean ground return.
Do not substitute TPS2373 variants onto a TPS2372 layout without review: per the TI E2E forum, pins 10, 14, 15, and 16 carry different functions (adapter priority, advanced startup, UVLO select) on TPS2373, while TPS2372 uses Autoclass. Also, remember the -3 variant is rated 60 W; designs targeting 90 W Type 4 must use TPS2372-4. Operating outside the 0 V to 57 V input envelope per distributor data, for example with non-compliant injectors, risks damaging the internal pass switch.
合規資訊
RoHS compliance indicated by distributor listings (LCSC product C2863330). Other compliance statuses not stated in provided data.
