TPS2386BPW - Quad-Port PoE PSE Controller | Texas Instruments
部品番号: TPS2386BPW ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1 | $1.00 |
TPS2386BPW 概要
A PoE PSE controller is a power management IC that sits inside a network switch, router, or PoE injector and governs the safe delivery of DC power over Ethernet cabling to powered devices (PDs) such as IP cameras, wireless access points, and VoIP phones. It handles detection, classification, and current limiting, and sits within the broader hierarchy of Ethernet power subsystems -> PoE PSE controller -> power management IC -> semiconductor.
Key features of the TPS2386B family include multi-port PoE power management, integrated detection and classification of attached powered devices, per-port current and thermal supervision, and fault protection. The device supports autonomous operation modes that allow port power-up decisions without host intervention, reducing software burden on the switch CPU.
Technically, the controller performs the standardized PD detection signature and classification handshake defined by IEEE 802.3 PoE specifications, monitors port current through external sense elements, and coordinates load sharing across ports. Fault conditions such as over-current, over-temperature, and undervoltage are reported through status outputs, enabling robust fault handling in enterprise networking equipment.
Typical applications include PoE-enabled Ethernet switches, PoE midspan injectors, network-attached access point enclosures, and industrial Ethernet infrastructure. Quad-port integration makes the part attractive for switch designs where board area and BOM count must be minimized.
Design consideration: PoE PSE controllers require careful layout of the high-current port paths and external MOSFETs; sense-resistor placement and thermal design directly affect accuracy and reliability, so follow the manufacturer datasheet layout guidance closely.
This page synthesizes distributor availability, drop-in alternatives, and practical design guidance not found in a single manufacturer datasheet, helping engineers select and cross-reference the TPS2386BPW faster.
ドロップイン代替品: TPS2386BPW — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
TPS2386PW
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS23861
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS2386BPW 最大定格＆電気的特性
| Product Type | Quad-Port PoE PSE Controller |
| Number of PoE Ports | 4 |
| 機能 | Power-over-Ethernet PSE controller with detection, classification, and fault management |
| パッケージ | TQFP-64 (PW) |
| 実装タイプ | Surface Mount |
TPS2386BPW tqfp-64 (pw) ピン配置ガイド
TPS2386BPW (tqfp-64 (pw) パッケージ) のピン配置。 このパワーデバイスは、ゲート、ドレイン、ソース端子を備えています。非極性パッケージの場合、正確なピン1の向きとフットプリントの詳細については、メーカーのデータシートを参照してください。主な用途には、電源設計、モータ駆動、負荷スイッチングがあります。
詳細なピン配置データはありません: TPS2386BPW.
詳細は データシート をご参照ください。
主な用途
TPS2386BPW の用途: 6 件s: PoE Ethernet Switches, PoE Midspan Injectors, Wireless Access Point Infrastructure, IP Camera Systems, Industrial Ethernet Infrastructure, Building Automation and VoIP Telephony.
PoE Ethernet Switches
The TPS2386BPW fits PoE switch designs because one quad-port controller supervises four Ethernet power channels, handling detection, classification, and per-port current supervision in a single TQFP-64 package. Placed between the switch backplane power rail and the Ethernet magnetics center taps with external pass MOSFETs and sense resistors, it enforces safe PoE handshakes per port. The quantified benefit is a 4-to-1 reduction in controller count versus single-port PSE ICs, cutting BOM lines and board area, while per-port fault reporting keeps a single failed PD from disturbing the other three powered ports on the same silicon.
おすすめ
PoE Midspan Injectors
Multi-port PoE midspan injectors use the TPS2386BPW to add power to existing data-only Ethernet links without replacing the switch. Its integrated detection and classification sequence ensures power is applied only after a valid powered-device signature is measured, protecting legacy non-PoE equipment on the same run. In a midspan chassis, the quad-port integration lets four injector channels share one controller, one power-budget supervisor, and one fault-reporting path, reducing channel cost. Designers should budget per-port current limits and thermal dissipation from the datasheet figures, since midspan boxes concentrate four full-power PoE ports in a small enclosure with limited airflow.
おすすめ
Wireless Access Point Infrastructure
Campus and enterprise Wi-Fi access points are typically powered over Ethernet, and the switches feeding them rely on PSE controllers like the TPS2386BPW. Its classification output lets the switch allocate power according to each access point's class, improving power-budget utilization across a rack of ports. With four ports per controller, a 24-port wireless switch needs only six PSE controllers plus pass MOSFETs, simplifying thermal design and firmware port management. The fault and overload supervision protects both the access point and the switch power plant, and autonomous-mode-capable family members allow ports to power without host polling for faster link bring-up.
おすすめ
IP Camera Systems
Surveillance deployments concentrate dozens of IP cameras on PoE switch ports, and each of those ports requires a PSE controller function; the TPS2386BPW provides four such channels per device. Its detection stage prevents power application to non-PoE devices, and its current supervision limits inrush when cameras with IR illuminators and PTZ motors start up. In a 32-camera NVR switch, eight quad-port controllers cover all channels with consistent protection behavior, easing certification and firmware maintenance. The per-port fault reporting lets the system automatically re-detect and restore a failed camera port without operator intervention, improving uptime in security-critical installations.
おすすめ
Industrial Ethernet Infrastructure
Industrial Ethernet switches and gateways increasingly deliver PoE to field devices such as IP phones, sensors, and wireless nodes. The TPS2386BPW's TQFP-64 surface-mount package and multi-channel integration suit dense industrial switch boards where reliability and board space dominate. Per-port overload and fault supervision withstand the erratic load profiles of field devices, and classification support lets the switch allocate a finite industrial 48V power budget deterministically. Engineers should derate for elevated cabinet temperatures using the datasheet thermal data and ensure sense-resistor Kelvin routing for accurate current supervision in electrically noisy factory environments with long cable runs.
おすすめ
Building Automation and VoIP Telephony
VoIP phones and building-automation controllers are classic PoE powered devices, and the desk or drop switches serving them are built on quad-port PSE controllers such as the TPS2386BPW. One controller handles four desk ports, performing the detection handshake when a phone is plugged in and removing power cleanly when it is unplugged. Its fault supervision protects the switch power supply from shorted or damaged cabling in walls and ceiling runs. For multi-floor deployments, the consistent behavior of a common PSE controller family across all switch SKUs simplifies fleet management, spare-part strategy, and firmware port-control code reuse across the building network.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TPS2386BPW — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TPS2386PW | TPS23861 |
|---|---|---|---|
| Package | TQFP-64 (PW) | TQFP-64 (PW) - same | TQFP-64 (PW) - same family |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Port Count | 4 | 4 | 4 channels |
主な差別化要因
- Quad-port integration （vs Single-port PSE controllers)
- Family compatibility with TPS23861 autonomous mode （vs TPS23861)
- B-grade ordering suffix （vs TPS2386PW)
設計ノート
PoE PSE controllers route four high-current port paths through external pass MOSFETs and sense resistors. Use Kelvin sensing at the sense resistor terminals so per-port current supervision reads accurately, keep the high-current loops short and wide (2 oz copper recommended for multi-port PoE boards), and place the controller's detection circuitry away from switching-regulator hot spots. Follow the TPS2386B datasheet layout section and TI's PoE reference designs for the recommended port-stage topology.
Estimated: a quad-port PoE board may dissipate several watts across the pass MOSFETs and sense resistors at full per-port load; the controller itself dissipates far less, but board-level junction temperature must be budgeted. Compute port-stage dissipation as I_port^2 x (Rds_on + R_sense) per port and verify the TQFP-64 theta_JA from the datasheet with your copper pour area. In enclosed midspan or wall-switch housings, confirm ambient derating before quoting per-port power.
Do not substitute the TPS23861 or other family members onto a TPS2386BPW footprint without comparing both datasheet pinouts pin-for-pin: multi-port PoE controllers in the same package size frequently reorder port-control, sense, and status pins between generations. Also verify the PoE type (Type-1 vs Type-2/at) support in firmware-driven classification registers; mismatched classification limits either under-power PDs or violate the power budget. Confirm the exact ordering suffix (B grade) requirements for your application before second-sourcing.
コンプライアンス情報
Compliance data was not present in the verified web data for this page; consult the TI product page quality section for RoHS/REACH status of the TPS2386BPW.
