TPS23754
- Powers up to 30-W (Input) PDs
- DC-DC Control Optimized for Isolated Converters
- Supports High-Efficiency Topologies
- Complete PoE Interface
- Enhanced Classification per IEEE 802.3at With Status Flag
- Adapter ORing Support
- Programmable Frequency With Synchronization
- Robust 100-V, 0.5-Ω Hotswap MOSFET
- –40°C to 125°C Junction Temperature Range
- Industry Standard PowerPAD™ HTSSOP-20
The TPS23754 and TPS23756 devices have a combined power-over-ethernet (PoE), powered-device (PD) interface, and current-mode DC-DC controller optimized specifically for isolated converters. The PoE interface supports the IEEE 802.3at standard.
The TPS23754 and TPS23756 support a number of input voltage ORing options including highest voltage, external adapter preference, and PoE preference. These features allow the designer to determine which power source will carry the load under all conditions.
The PoE interface features the new extended hardware classification necessary for compatibility with high-power midspan power sourcing equipment (PSE) per IEEE 802.3at. The detection signature pin can also be used to force power from the PoE source off. Classification can be programmed to any of the defined types with a single resistor.
The DC-DC controller features two complementary gate drivers with programmable dead time. This simplifies the design of active-clamp forward converters or optimized gate drive for highly-efficient flyback topologies. The second gate driver may be disabled if desired for single MOSFET topologies. The controller also features internal soft start, bootstrap start-up source, current-mode compensation, and a 78% maximum duty cycle. A programmable and synchronizable oscillator allows design optimization for efficiency and eases use of the controller to upgrade existing power supply designs. Accurate programmable blanking, with a default period, simplifies the usual current-sense filter design trade-offs.
The TPS23754 device has a 15-V converter start-up while the TPS23756 device has a 9-V converter start-up. The TPS23754-1 replaces the PPD pin with a no-connect for increased pin spacing.
기술 자료
설계 및 개발
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TPS23754EVM-383 — TPS23754용 33-57V Vin, 12V Vout 고전력 평가 모듈
TPS23754EVM-383 contains evaluation and reference circuitry for the TPS23754, which is a Class 4 (25.5 W) PoE PD + PWM Controller. The TPS23754 is targeted at wide Vin aplications (24 V - 60 V) in isolated converter topologies and is compliant with the IEEE 802.3 at Power over Ethernet (PoE) (...)
TPS23754EVM-420 — TPS23754용 20-57V Vin, 5V Vout 고전력 평가 모듈
TPS23754EVM-420 contains evaluation and reference circuitry for the TPS23754, which is a Class 4 (25.5 W) PoE PD + PWM Controller. The TPS23754 is targeted at wide Vin aplications (24 V - 60 V) in isolated converter topologies and is compliant with the IEEE 802.3at Power over Ethernet (PoE) (...)
SLUC480 — PoE PD Efficiency Calculator
PMP10288 — 클래스 4 PoE 고효율 능동 클램프 순방향 컨버터(3.3V) 레퍼런스 디자인
The PMP10288 reference design is a Power Over Ethernet (POE) active clamp forward converter. It features the TPS23754, which is a combination of a POE Powered Device (PD) controller and PWM controller. CSD17501Q5A FETs are used for high efficiency synchronous rectification. The input accepts (...)
PMP22301 — 클래스 4 PoE PD(24V/0.9A) 전원 공급 장치 레퍼런스 설계
PD/PWM 컨트롤러를 하나의 패키지로 조합하여 비용과 공간을 절약합니다. 이 레퍼런스 설계는 무선 액세스 지점, 오디오, 사이니지 및 IP 카메라와 같은 다양한 PoE 애플리케이션에 적합합니다.
PMP6812 — PoE 애플리케이션용 클래스 4, 비용에 최적화된 플라이백 컨버터 레퍼런스 디자인
This reference evaluation module, featuring the TPS23754 PoE interface and DC-to-DC controller is used for class 4 PoE applications.
The flyback topology with diode rectification results in a low-cost converter for PoE applications such as a security camera. With the appropriate BOM changes, PMP6812 (...)
PMP9563 — PoE PD 애플리케이션을 위한 클래스 4 12V/2.5A 능동 클램프 순방향 컨버터 레퍼런스 디자인
This reference design is a Power Over Ethernet (POE) active clamp forward converter. It features the TPS23754, which is a combination of a POE Powered Device (PD) controller and PWM controller. CSD19534Q5A FETs are used for high efficiency synchronous rectification. The input accepts standard Type (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| HTSSOP (PWP) | 20 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.