TPS23731
- Complete IEEE 802.3bt Type 3 (Class 1-4) and 802.3at PoE PD Solution
- EA Gen 2 logo-ready (PoE 2 PD Controller)
- Robust 100-V, 0.3-Ω (typ) Hotswap MOSFET
- Supports power levels for up to 30-W operation
- Integrated PWM controller for flyback configuration
- Flyback control with primary-side regulation
- Supports CCM operation
- ±1.5% (typ, 5-V output) load regulation (0-100% load range) — with Sync FET
- ±3% (typ, 12-V output) load regulation (5-100% load range) — diode rectified
- Also supports secondary-side regulation
- Soft-start control with advanced startup and hiccup mode overload protection
- Soft-stop shutdown
- Adjustable frequency with synchronization
- Programmable frequency dithering for EMI
- Flyback control with primary-side regulation
- Automatic Maintain Power Signature (MPS)
- Auto-adjust to PSE type and load current with auto-stretch
- Primary adapter priority input
- –40°C to 125°C junction temperature range
The TPS23731 device combines a Power over Ethernet (PoE) powered device (PD) interface, and a current-mode DC-DC controller optimized for flyback switching regulator designs where the use of primary-side regulation (PSR) is supported. The PoE interface supports the IEEE 802.3bt and IEEE 802.3at standard s for applications needing up to 25.5 W or less at PD input.
Programmable spread spectrum frequency dithering (SSFD) is provided to minimize the size and cost of EMI filter. Advanced Startup with adjustable soft-start helps to use minimal bias capacitor while simplifying converter startup and hiccup design, also ensuring that IEEE 802.3bt /at startup requirements are met.
The soft-stop feature minimizes stress on switching sync FET(s), allowing FET BOM cost reduction.
The PSR feature of the DC-DC controller uses feedback from an auxiliary winding for control of the output voltage, eliminating the need for external shunt regulator and optocoupler. It is optimized for continuous conduction mode (CCM), and can work with secondary side synchronous rectification, resulting in optimum efficiency, regulation accuracy and step load response over multiple outputs.
The DC-DC controller features slope compensation and blanking. Typical switching frequency is 250 kHz.
The automatic MPS enables applications with low power modes or multiple power feeds. It automatically adjusts its pulsed current amplitude and duration according to PSE Type and system conditions, to maintain power while minimizing consumption.
관심 가지실만한 유사 제품
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | TPS23731 IEEE 802.3bt Type 3 Class 1-4 PoE PD with No-Opto Flyback DC-DC Controller datasheet | PDF | HTML | 2020/10/02 |
| EVM User's guide | TPS23731EVM-095 Evaluation Module (Rev. A) | PDF | HTML | 2023/08/02 | |
| Application note | PoE Powered Devices Debug Guidelines | PDF | HTML | 2021/07/19 | |
| Application note | PoE PD Schematic Review Guidelines | PDF | HTML | 2021/04/29 | |
| Certificate | TPS23731EVM-095 EU RoHs Declaration of Conformity (DoC) | 2020/11/13 | ||
| Application note | Soft-Stop: TPS2373X Feature Explanation | PDF | HTML | 2020/10/27 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
TPS23731EVM-095 — TPS23731 IEEE802.3bt 타입 3 클래스 4 PoE PD 애플리케이션 평가 모듈
The TPS23731 evaluation module (TPS23731EVM-095) contains evaluation and reference circuitry for the TPS23731, which is a IEEE802.3bt Type 3 Class 4 PoE PD controller suitable for Class 4 (25.5W) PoE PD applications.
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| VQFN (RMT) | 45 | 옵션 보기 |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.