TPS23753
IEEE 802.3-2005 PoE インターフェイス、絶縁コンバータおよびコントローラ
TPS23753
- Optimized for Isolated Converters
- Complete PoE Interface
- Adapter ORing Support
- 12 V Adapter Support
- Programmable Frequency with Synch.
- Robust 100 V, 0.7 Hotswap MOSFET
- Small TSSOP 14 Package
- 15 kV / 8 kV System Level ESD Capable
- –40°C to 125°C Junction Temperature Range
- Design Procedure Application Note - SLVA305
- Adapter ORing Application Note - SLVA306
- APPLICATIONS
- IEEE 802.3at Compliant Powered Devices
- VoIP Telephones
- Access Points
- Security Cameras
The TPS23753 is a combined Power over Ethernet (PoE) powered device (PD) interface and current-mode dc/dc controller optimized specifically for isolated converter designs. The PoE implementation supports the IEEE 802.3at standard as a 13 W, type 1 PD. The requirements for an IEEE 802.3at type 1 device are a superset of IEEE 802.3-2008 (originally 802.3af) requirements.
The TPS23753 supports a number of input-voltage ORing options including highest voltage, external adapter preference, and PoE preference.
The PoE interface features an external detection signature pin that can also be used to disable the internal hotswap MOSFET. This allows the PoE function to be turned off. Classification can be programmed to any of the defined types with a single resistor.
The dc/dc controller features a bootstrap startup mechanism with an internal, switched current source. This provides the advantages of cycling overload fault protection without the constant power loss of a pull up resistor.
The programmable oscillator may be synchronized to a higher-frequency external timing reference.
技術資料
種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
---|---|---|---|---|---|---|
* | データシート | IEEE 802.3 PoE Interface and Isolated Converter Controller データシート (Rev. C) | 2010年 1月 4日 |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点