TPS23882B
- IEEE 802.3bt PSE solution for PoE 2 Type-3 2-Pair power over ethernet applications
- Compatible with TI’s FirmPSE system firmware
- SRAM Programmable memory
- Programmable power limiting accuracy ±4%
- 200-mΩ current sense resistor
- User-selectable 15-W or 30-W autonomous mode with no MCU required
- Selectable 2-pair port power allocations
- 4 W, 7 W, 15.4 W, or 30 W
- Dedicated 14-bit integrating current ADC per port
- Noise immune MPS for DC disconnect
- 2% current sensing accuracy
- 1- or 3-bit fast port shutdown input
- Auto-class discovery and power measurement
- Never fooled 4-point detection
- Inrush and operational foldback protection
- 425-mA and 1.25-A selectable current limits
- Port re-mapping
- 8-bit or 16-bit I2C communication
- Flexible processor controlled operating modes
- Auto, semiauto and manual / diagnostic
- Per port voltage monitoring and telemetry
- –40 °C to +125 °C temperature operation
The TPS23882B is an 8-channel power sourcing equipment (PSE) controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard. The PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power.
The TPS23882B improves on the TPS2388 with reduced current sense resistors, SRAM programmability, programmable power limiting, capacitance measurement, and compatibility with TI’s FirmPSE system firmware (see Device Comparison Table).
Programmable SRAM enables in-field firmware upgradability over I2C to ensure IEEE compliance and interoperability with the latest PoE enabled devices. Dedicated per port ADCs provide continuous port current monitoring and the ability to perform parallel classification measurements for faster port turn on times. A 1.25-A port current limit and adjustable power limiting allows for the support of non-standard applications above 60-W sourced. The 200-mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements.
Port remapping and pin-to-pin compatibility with the TPS2388, TPS23880, and TPS23881 devices eases migration from previous generation PSE designs and enables interchangeable 2-layer PCB designs to accommodate different system PoE power configurations.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TPS23882B Type-3 2-Pair 8-Channel PSE Controller with Autonomous Mode, SRAM, and 200-mΩ RSENSE datasheet (Rev. A) | PDF | HTML | 2022. 2. 23 | |
| 애플리케이션 노트 | TPS23882B SIFOs IEEE802.3bt Conformance Test Report | PDF | HTML | 2023. 8. 9 | ||
| Application brief | Choosing PoE PSE System Software Solutions | PDF | HTML | 2021. 8. 3 | ||
| Application brief | Using the TPS23861 and TPS23882B in Autonomous Mode Features and Benefits | PDF | HTML | 2021. 7. 30 | ||
| 인증서 | TPS23882B1EVM-008 EU RoHs Declaration of Conformity (DoC) | 2021. 4. 23 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BOOST-PSEMTHR8-097 — 8포트 PSE 시스템용 TPS23882 Type-3, 30W, 2페어 PSE 마더보드
- TPS23882 평가 시스템
- BOOST-PSEMTHR8-097: IEEE 802.3bt 지원 PoE PSE 애플리케이션용 마더보드(별도 판매)
- TPS23882EVM-008: (...)
TPS23882B1EVM-008 — TPS23882B 부속 카드 유형-3, 30W, 2페어, 8포트 시스템 PSE
TPS23882B1EVM-008 부속 카드에는 8채널, IEEE 802.3bt 지원(타입 3, 30W) 2페어 PSE 컨트롤러가 포함됩니다.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RTQ) | 56 | Ultra Librarian |
주문 및 품질
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