TPS65283
- Buck Converter
- Wide input voltage range 4.5 to 18 V
- Integrated dual buck converter, maximum continuous current 3.5 A (Buck1) / 2.5 A (Buck2)
- Feedback reference voltage 0.6 V ±1%
- Adjustable switching frequency 200 kHz to
2 MHz - Internal built soft start time 2.4 ms
- External clock synchronization
- Cycle-by-cycle current limit
- Power good indicator for each buck
- Continuous current mode (TPS65283) or pulse skipping mode (PSM) (TPS65283-1) at light load
- Power distribution switch
- Integrated a power distribution switch with on-resistance 60 mΩ
- Operating input voltage range 2.4 to 6 V
- Adjustable current limiting up to 2.7 A
- Current-limit accuracy ±10% at 1.25 A (typical)
- Auto recovery overcurrent protection
- Reverse input to output voltage protection
- Overtemperature protection
- 24-lead VQFN (RGE) 4-mm × 4-mm package
The TPS65283, TPS65283-1 in thermally-enhanced 4-mm × 4-mm VQFN package is a full
featured
4.5- to 18-V Vin, 3.5-A/2.5-A output current synchronous step down DC-DC converter, which is
optimized for small designs through high efficiency and integrating the high-side and low-side
MOSFETs. The device also incorporates one N-channel MOSFET power switches for power distribution
systems. This device provides a total power distribution solution, where precision current limiting
and fast protection response are required.
The 60-mΩ independent power distribution switch limits the output current to a programmable current limit threshold by using an external resistor. The current limit accuracy can be achieved as tight as ±10% at typical 1.25 A. The nFAULT output asserts low under overcurrent and reverse-voltage conditions.
Constant frequency peak current mode control in DC-DC converter simplifies the compensation and optimizes transient response. Cycle-by-cycle overcurrent protection and operating in hiccup mode limit MOSFET power dissipation during buck output short circuit or over loading conditions. When die temperature exceeds thermal over loading threshold, the overtemperature protection shuts down the device.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 日期 |
|---|---|---|---|---|
| * | Data sheet | TPS65283, TPS65283-1 4.5-V to 18-V Input Voltage, Maximum 3.5-A and 2.5-A Current, Synchronous Dual Buck Converter With Power Distribution Switch datasheet (Rev. E) | PDF | HTML | 2019年 1月 27日 |
設計與開發
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TPS65283EVM-646 — TPS65283EVM 評估模組
TPS65283EVM-646 評估模組 (EVM) 是一個已完成組裝且經過測試的電路，用於評估 TPS65283。此 EVM 的最大 DC 輸出電流為 3.5A 與 2.5A。- 此 EVM 包含輸入和輸出連接器以及控制跨接器，可輕鬆評估裝置功能。- 它還具備 EN1、EN2 與 EN_SW 跳線，以啟用與停用降壓與電源開關。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGE) | 24 | 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。