TPS65266
- Operating Input Voltage Range 2.7 to 6.5 V
- Feedback Reference Voltage 0.6 V ±1%
- Maximum Continuous Output Current 3 A/2 A/2 A
- Dedicated Enable and Soft Start
- Accurate Start-Up Timing Control With Enable Pins
Discharge - Forced Continuous Current (FCC) Mode at Light Load
- Cycle-by-Cycle Current Limiting With Hiccup Mode
Overcurrent Protection - Adjustable Clock Frequency 250 kHz to 2.4 MHz
- ExternalClock Synchronization
- Power-Good Indicator
- Overtemperature Protection
The TPS65266 incorporates 3 channels of high-efficiency synchronous buck converter for applications operating off the adaptor or battery with input voltage lower than 6.5 V.
The buck DC/DC converter integrates power MOSFETs for optimized power efficiency and reduces external component counts. The peak current mode control simplifies the compensation and fast transient response. High clock frequency allows smaller and low-value inductors and capacitors. External compensation supports optimized loop compensation and fast transient response. In light load condition, the buck converter operates in FCC mode for a reduction in noise susceptibility and RF interference. Cycle-by-cycle overcurrent limiting with hiccup mode limits MOSFET power dissipation in short circuit or overloading fault conditions.
The TPS65266 features a power-good supervisor circuit that monitors all converter outputs. The PGOOD pin is asserted after the output voltages in each channel are in regulation and sequencing is done.
When continuous heavy overload or short circuit increases power dissipation in the buck converter, internal thermal protection circuit shuts off the device to prevent damage. Recovery from a thermal shutdown is automatic after the device has cooled sufficiently.
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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 | TPS65266 2.7- to 6.5-V Input Voltage, 3-A/2-A/2-A Output Current Triple Synchronous Step-Down Converter datasheet (Rev. B) | PDF | HTML | 2015/1/12 | ||
| 應用說明 | Measure Power Stage Gain and Slope Compensation in PCM (Peak Current Mode) BUCK (Rev. A) | PDF | HTML | 2019/4/1 | |||
| 應用說明 | TPS65250/1/2/3 LAYOUT GUIDE | 2013/1/15 |
設計與開發
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TPS65266EVM-686 — 2.7V 至 6.5V 輸入、3A/2A/2A 降壓轉換器評估模組
TPS65266EVM-686 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 TPS65266。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。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RHB) | 32 | Ultra Librarian |
訂購與品質
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。