TPD4S480
- 4-channels of short-to-VBUS overvoltage protection (CC1, CC2, SBU1, SBU2): 63VDC tolerant
- 4-channels of IEC 61000-4-2 ESD protection (CC1, CC2, SBU1, SBU2)
- CC1 and CC2 overvoltage protection FETs for passing VCONN power
- ±65V surge protection on CC pins
- +65V/-35V surge protection on SBU pins
- Integrated VBUS divider circuit with enable for dividing down EPR level VBUS
- Integrated FET driver for control of external EPR blocking FET
- CC dead battery resistors integrated for handling dead battery use case in mobile devices
- 3mm × 3mm QFN package
The TPD4S480 is a single-chip USB Type-C port protection device that provides 48V Short-to-VBUS overvoltage and IEC ESD protection.
Since the release of the USB Type-C connector, many products and accessories for USB Type-C have been released that do not meet the USB Type-C specification. One example of this is USB Type-C Power Delivery adapters that only place high voltage on the VBUS line. Another concern for USB Type-C is that mechanical twisting and sliding of the connector could short pins due to the close proximity they have in this small connector. This can cause 48V VBUS to be shorted to the CC and SBU pins. Also due to the proximity of the pins in the Type-C connector, there is a heightened concern that debris and moisture will cause the 48V VBUS pin to be shorted to the CC and SBU pins.
These non-ideal equipment and mechanical events make it necessary for the CC and SBU pins to be 48V tolerant, even though the pins only operate at 5V or lower. The TPD4S480 enables the CC and SBU pins to be 48V tolerant without interfering with normal operation by providing over-voltage protection on the CC and SBU pins. The device places high voltage FETs in series on the SBU and CC lines. When a voltage above the OVP threshold is detected on these lines, the high voltage switches are opened up, isolating the rest of the system from the high voltage condition present on the connector.
The integrated VBUS divider circuit and FET driver, allow PD controllers not rated for EPR operation to safely operate in EPR voltage ranges. When enabled by GPIO or automatically when VBUS exceeds 24V, the TPD4S480 disables the optional external blocking FET and enables the voltage divider. This action protects 20V rated PD controllers and allows the use of existing VBUS sense circuits.
Finally, most systems require IEC 61000-4-2 system level ESD protection for external pins. The TPD4S480 integrates IEC 61000-4-2 ESD protection for the CC1, CC2, SBU1, and SBU2 pins, eliminating the need to place high voltage TVS diodes externally on the connector.
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 | TPD4S480 USB Type-C® 48V EPR Port Protector: Short-to-VBUS Overvoltage and IEC ESD Protection datasheet | PDF | HTML | 2024/11/22 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TPS26750EVM — TPS26750 評估模組
TPS26750EVM 設計用於測試 USB-PD SPR 和 EPR 範圍內的僅汲取、僅供電或 DRP 應用的 USB-PD。TPS26750EVM 可在未提供電源時僅作為汲極運作，或在提供 15V 電源時作為源極、汲極或 DRP 運作。TPS26750EVM 根據 USB-PD 規範，支援在 5A 電流下供應和汲取高達 48V 的電流，並可搭配 BQ25756EVM 實現電池充電應用。
TPS2X7XX-SCHEMATIC-CHECKLIST — Schematic checklist for TPS2X7XX USB-PD devices
PMP41115 — 240W 整合式 USB Type-C 和 USB PD3.1 充電器參考設計
此參考設計為可容納 10 至 12 芯電池的整合式 USB Type-C 和 USB 電力輸送 (PD) 充電器，適合電動自行車、高電量行動電源和攜帶式充電站應用。此設計整合 USB PD3.1 控制器 TPS26750 和 TPD4S480，結合 48V 延伸功率範圍 (ERP) USB 連接埠保護器與四開關降壓升壓控制器 BQ25756，以 240W 的功率全面實現 USB PD3.1 功能。PD 控制器可透過 I2C 通訊，與電池充電器控制器 BQ25756 搭配運作。BQ25756 (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RUK) | 20 | Ultra Librarian |