TPS23770
- 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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | Integrated 100-V IEEE 802.3af PD and DC/DC Controller datasheet (Rev. B) | 2008年 2月 7日 | |
| Application note | PoE Powered Devices Debug Guidelines | PDF | HTML | 2021年 7月 19日 | |
| Application note | PoE PD Schematic Review Guidelines | PDF | HTML | 2021年 4月 29日 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application note | Designing an EMI Compliant PoE with Isolated Flyback | 2008年 5月 20日 | ||
| Application note | Practical Guidelines EMI Compliant PoE | 2008年 3月 27日 |
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.
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 20 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。