TPS23882RTQR - 8-Channel PoE PSE Controller | TI
MPN： TPS23882RTQR ✓ 啟用中TPS23882RTQR 概覽
A PoE PSE controller is a power management IC that manages detection, classification, and controlled power delivery onto Ethernet data pairs, sitting at the top of the PoE system hierarchy (PSE controller -> PoE system -> Ethernet power infrastructure). The PSE must detect valid powered device signatures, complete mutual identification, and apply power only after classification succeeds, protecting both the switch port and the PD.
Key features include 8 independent ports supporting up to 30 W per port in Type-3 2-pair mode, on-chip 200 mOhm sense resistors that reduce BOM count and board area versus external-sense designs, and SRAM-based programmability for custom detection and classification profiles. Port remapping and pin-to-pin compatibility with the TPS2388, TPS23880, and TPS23881 devices enable interchangeable PCB designs across TI's PSE controller family.
The TPS23882 improves on the earlier TPS2388 by reducing current sense resistor requirements and adding SRAM programmability, lowering total system cost for multi-port PoE switches. It manages valid signature detection, AC discharge, classification, and per-port current limiting autonomously, or under host MCU control via a serial management interface.
Typical applications include enterprise PoE switch line cards, network video recorder and surveillance switch ports, wireless access point power delivery, and multi-port PoE midspan injectors where 802.3bt compliance is mandatory.
When designing the board, use TI reference layouts to preserve interchangeable footprints across TPS2388x family members, and verify thermal performance when running all 8 ports at full 30 W loads.
This page synthesizes verified distributor pricing, drop-in alternatives within the TI PSE family, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 TPS23882RTQR — 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： TPS23882RTQR （相同外形與佔位） — 差異在於 Number of Channels, Package, RoHS Status.
TPS23881RTQR
✅ 直接替換聯絡詢價
查看資料表 →TPS23880RTQR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS2388RTQR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS23882RTQR 最大額定值與電氣特性
| 功能 | PoE PSE Controller (Power Sourcing Equipment) |
| Number of Channels | 8 |
| Standards Supported | IEEE 802.3bt, IEEE 802.3at (PoE+), IEEE 802.3af (PoE) |
| PoE Type | Type-3, 2-pair |
| Max Power per Port | 30 W (2-pair, Type-3) |
| Integrated Sense Resistor | 200 mOhm (on-chip RSENSE) |
| Embedded Memory | SRAM (programmable detection/classification) |
| Pin Compatibility | TPS2388, TPS23880, TPS23881 (pin-to-pin, port remapping) |
| 封裝 | 56-QFN (8x8 mm), RTQ suffix |
| 工作溫度範圍 | -40C to +125C |
| 安裝類型 | Surface Mount |
| Packaging | Tape & Reel (R suffix), Cut Tape (T suffix) |
| Part Status | Active |
| RoHS 狀態 | Compliant |
| 類別 | PMIC - Power over Ethernet (PoE) Controllers |
TPS23882RTQR 56-qfn (8x8 mm), rtq suffix 腳位配置指南
TPS23882RTQR（56-qfn (8x8 mm), rtq suffix 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： TPS23882RTQR.
請參閱 資料表 以查看完整腳位配置。
典型應用
TPS23882RTQR 適用於 6 應用s: Enterprise PoE Switch Line Cards, Surveillance and NVR PoE Ports, Wireless Access Point Power Delivery, PoE Midspan Injectors, Industrial Ethernet Switches, Smart Building and IoT Aggregation.
Enterprise PoE Switch Line Cards
The TPS23882RTQR is purpose-built for multi-port enterprise switch line cards where 8-channel density and 802.3bt Type-3 compliance are required. Its 200 mOhm integrated sense resistors eliminate up to 8 external sense resistors per device, reducing BOM count and board area on dense line cards, while SRAM programmability lets firmware teams tune detection and classification thresholds per port. The pin-to-pin compatibility with TPS2388, TPS23880, and TPS23881 allows a single interchangeable PCB footprint across product tiers, so a cost-reduced Type-2 SKU and a full 802.3bt Type-3 SKU share one layout. Per-port autonomous operation offloads the host MCU, simplifying switch firmware.
推薦
Surveillance and NVR PoE Ports
Network video recorders and surveillance switches power IP cameras on every Ethernet drop, and the TPS23882RTQR fits this role with 8 ports of IEEE 802.3at/bt-compliant power at up to 30 W each, enough for PTZ cameras with heaters and IR illuminators. Valid signature detection and mutual identification prevent power application to faulty or non-compliant loads, protecting camera installs at cable ends where troubleshooting is costly. The -40C to +125C operating range suits outdoor enclosures and unventilated NVR cabinets. Integrated 200 mOhm RSENSE reduces sense-resistor power loss versus external-sense designs, improving thermal margins in sealed surveillance hardware.
推薦
Wireless Access Point Power Delivery
Wireless LAN access points, including Wi-Fi 6/6E enterprise APs drawing 25-30 W, are cleanly powered by the TPS23882RTQR in 2-pair Type-3 mode. The controller autonomously performs detection, classification, and inrush control per IEEE 802.3bt, so AP boots are orderly even on long cable runs where DC resistance approaches 25 ohms. Its SRAM-based programmability allows network OEMs to tune classification behavior for AP-specific power-up profiles. With 8 channels per device, a multi-AP aggregation switch uses one controller per 8 ports, and per-port current limiting via the integrated 200 mOhm sense resistors protects cabling infrastructure from faults.
推薦
PoE Midspan Injectors
Multi-port midspan injectors add PoE power to existing non-PoE Ethernet infrastructure, and the TPS23882RTQR provides the compliant power-insertion engine for 8-port midspan products. Because midspans sit between a standard switch and the PD, the controller's accurate detection signature thresholds prevent damage to 10/100/1000BASE-T data-only equipment, while 802.3bt mutual identification ensures PDs receive their negotiated power class. The 56-QFN 8x8 mm package and integrated 200 mOhm RSENSE shrink injector PCB size, important for compact desktop midspan enclosures with limited airflow. The -40C to +125C range covers industrial midspan deployments.
推薦
Industrial Ethernet Switches
Industrial Ethernet switches in factory automation, traffic control, and building management require PoE ports rated for harsh environments, matching the TPS23882RTQR's -40C to +125C operating range. Its autonomous per-port power management keeps cameras, sensors, and wireless nodes powered through brownouts with controlled inrush, and SRAM programmability allows OEM-specific detection retries for long or degraded cable plants typical of industrial sites. Pin compatibility with the TPS2388 family lets industrial product lines offer PoE and non-PoE variants from one PCB. The integrated 200 mOhm sense resistors improve efficiency at the sustained high duty cycles industrial switches experience.
推薦
Smart Building and IoT Aggregation
Smart building hubs aggregate LED luminaires, occupancy sensors, access-control readers, and HVAC controllers over PoE, and the TPS23882RTQR supplies 8 compliant ports per controller with 30 W per port capacity in Type-3 2-pair mode. PoE luminaires and sensor nodes benefit from the controller's strict IEEE 802.3bt detection and classification sequence, which prevents power-up surges on mixed-device networks. The SRAM-programmable classification profiles let building-management OEMs implement custom power policies per port group. Its 56-QFN footprint shared with TPS2388/TPS23880/TPS23881 enables scalable port-count designs reusing one validated layout across building product tiers.
推薦
推薦產品摘要
工程參考資料，適用於 TPS23882RTQR — 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 | TPS23881RTQR | TPS23880RTQR | TPS2388RTQR |
|---|---|---|---|---|
| Package | 56-QFN (8x8 mm, RTQ) | 56-QFN (8x8 mm, RTQ) - same | 56-QFN (8x8 mm, RTQ) - same | 56-QFN (8x8 mm, RTQ) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| IEEE Standards | 802.3af/at/bt (Type-3, 2-pair) | 802.3af/at/bt incl. Type-4 4-pair | 802.3af/at/bt | 802.3af/at (Type-2) |
| Max Power per Port | 30 W (2-pair) | Up to 90 W (4-pair) | 30 W | 30 W (Type-2) |
| Channels | 8 | 8 | 8 | 8 |
| Integrated Sense Resistor | Yes, 200 mOhm | Yes, 200 mOhm | No, external RSENSE | No, external RSENSE |
| Pin-to-Pin Compatible | Yes (TPS2388/80/81 family) | Yes, with port remapping | Yes, with port remapping | Yes, with port remapping |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
主要差異化特點
- Integrated 200 mOhm sense resistors (對比TPS2388RTQR)
- IEEE 802.3bt Type-3 2-pair compliance (對比TPS2388RTQR)
- Same-footprint upgrade path to 4-pair 90 W (對比TPS23881RTQR)
設計說明
Follow the TI TPS23882 datasheet reference layout exactly for the 56-QFN RTQ footprint, because the family's port-remapping feature is designed to keep the same 2-layer PCB interchangeable between TPS2388, TPS23880, TPS23881, and TPS23882. Keep the high-current port paths (external pass MOSFETs to RJ45 magnetics) short and wide; each port can carry up to ~600 mA continuous in Type-3 mode. Place the TPS23882 away from the external MOSFET heat sources to keep the controller junction well within the 125C rating.
Although the 200 mOhm sense resistors are integrated, port power still flows through external pass MOSFETs that must be selected for the required RDS(on), SOA during inrush, and 802.3bt fault conditions. A common mistake is migrating from TPS2388 (external sense) layouts to TPS23882 without verifying that the old sense-resistor pads are handled per the TI migration guidance - use the documented port remapping instead of hard-wiring. Also confirm detection-classification timing in SRAM-programmed profiles still meets IEEE 802.3bt limits.
Estimated: an 8-port system delivering 30 W per port routes up to 240 W through the board; while the TPS23882 itself dissipates relatively little, sense-resistor conduction loss (I^2 x 0.2 ohm per port leg) and external MOSFET losses dominate. At 0.6 A per port, integrated sense loss is roughly 0.07 W per port. Ensure copper pour on the QFN thermal pad and airflow over the MOSFET bank; verify junction temperatures with a thermal camera at full 8-port load before release.
合規資訊
RoHS compliant per TI product page and distributor listings. REACH, halogen-free, and conflict minerals declarations not found in the provided data - download certificates from the TI product page.
