TPS23750
- Complete 802.3af PoE Interface
- Features derived from the TPS2375
- 100 V, 0.6
Internal Pass MOSFET - Standard and Legacy UVLO Choices
- Fixed 140 mA Inrush Limit
- Primary Side DC/DC Converter Control
- Minimum External Component Count
- Current Mode Control
- Isolated and Non-Isolated Topologies
- Programmable Operating Frequency
- Current Sense Leading-edge Blanking
- 50% Duty Cycle Limiting
- Voltage Output Error Amplifier
- Internal PoE and Converter Sequencing
- Industry-Standard 20 Lead Package
- Industrial Temperature Range, -40°C to 85°C
- APPLICATIONS
- All PoE PD Devices Including:
- Wireless Access Points
- VoIP Phones
- Security Cameras
- All PoE PD Devices Including:
PowerPAD is a trademark of Texas Instruments.
The TPS23750 integrates the functionality of the TPS2375 with a primary side dc/dc PWM controller. The designer can create a front-end solution for PoE-PD applications with minimum external components. The TPS23770 is identical to the TPS23750 with the exception of the undervoltage lockout turn-on voltage, which is compatible with legacy systems.
The PoE front end has all the necessary IEEE 802.3af functions including detection, classification, undervoltage lockout and inrush control. The PoE input switch is integrated within the TPS23750.
The dc/dc controller section is designed to support flyback, forward, and nonsynchronous low-side switch buck topologies.
The external switching MOSFET and current sense resistor provide flexibility in topology, power level, and current limit. The full-featured dc/dc controller includes programmable soft start, hiccup type fault limiting, 50% maximum duty cycle, programmable constant switching frequency, and a true voltage-output error amplifier. Additional protection features provide for robust designs.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | Integrated 100-V IEEE 802.3af PD and DC/DC Controller datasheet (Rev. B) | 2008/2/7 | |||
| 應用說明 | PoE Powered Devices Debug Guidelines | PDF | HTML | 2021/7/19 | |||
| 應用說明 | PoE PD Schematic Review Guidelines | PDF | HTML | 2021/4/29 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Lightning Surge Considerations for PoE Powered Devices | 2015/4/30 | ||||
| EVM User's guide | TPS23750 Flyback-Converter Evaluation Board - HPA108. (Rev. D) | 2011/3/31 | ||||
| 應用說明 | Advanced Adapter ORing Solutions using the TPS23753 (Rev. A) | 2009/2/9 | ||||
| 應用說明 | Designing an EMI Compliant PoE with Isolated Flyback | 2008/5/20 | ||||
| 應用說明 | Practical Guidelines EMI Compliant PoE | 2008/3/27 | ||||
| 更多文件說明 | TPS23750PWP Test Report | 2008/2/19 | ||||
| 使用指南 | TPS23750 High Efficiency 5V at 2.2A PoE PD Reference Design | 2006/3/7 | ||||
| 使用指南 | TPS23750 PMP1360 12V at 1A PoE PD Reference Design | 2006/3/7 | ||||
| 應用說明 | Wall Adapter Powers IEEE 802.3af Powered Device | 2006/2/1 |
設計與開發
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TPS23750EVM-107 — TPS23750 評估模組降壓
The TPS23750EVM-107 evaluation module implements an IEEE 802.3af-compliant class-3 power interface and a non-isolated DC/DC switching converter using the Texas Instruments TPS23750 powered device (PD) controller in a typical power-over-Ethernet (PoE) configuration.
TPS23750EVM-108 — TPS23750 評估模組返馳
The TPS23750EVM-108 evaluation module implements an IEEE 802.3af-compliant class-3 power interface and a DC/DC switching converter using the Texas Instruments TPS23750 powered device (PD) controller in a typical power-over-Ethernet (PoE) configuration.
SLUC480 — PoE PD Efficiency Calculator
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 20 | Ultra Librarian |
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