TPS54336A
- Synchronous 128-mΩ and 84-mΩ MOSFETs for
3-A Continuous Output Current - TPS54335A: Internal 2-ms Soft-Start,
50-kHz to 1.5-MHz Adjustable Frequency - TPS54336A: Adjustable Soft-Start,
Fixed 340-kHz Frequency - Low 2-µA Shutdown, Quiescent Current
- 0.8-V Voltage Reference with ±0.8%
Accuracy - Current Mode Control
- Monotonic Startup into Pre-Biased Outputs
- Pulse Skipping for Light-Load Efficiency
- Hiccup Mode Overcurrent Protection
- Thermal Shutdown (TSD) and
Overvoltage Transition Protection - 8-Pin SO PowerPAD and 10-Pin VSON Packages
The TPS5433xA family of devices are synchronous converters with an input-voltage range of 4.5 to 28 V. These devices include an integrated low-side switching FET that eliminates the need for an external diode which reduces component count.
Efficiency is maximized through the integrated 128-mΩ and 84-mΩ MOSFETs, low IQ and pulse skipping at light loads. Using the enable pin, the shutdown supply current is reduced to 2 μA. This step-down (buck) converter provides accurate regulation for a variety of loads with a well-regulated voltage reference that is 1.5% over temperature.
Cycle-by-cycle current limiting on the high-side MOSFET protects the TPS5433xA family of devices in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. A low-side sinking current-limit turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection is triggered if the overcurrent condition continues for longer than the preset time. Thermal shutdown disables the device when the die temperature exceeds the threshold and enables the device again after the built-in thermal hiccup time.
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 | TPS5433xA 4.5-V to 28-V Input, 3-A Output, Synchronous Step-Down DC-DC Converter datasheet (Rev. D) | PDF | HTML | 2016/2/10 | ||
| 類比設計期刊 | Control-Mode Quick Reference Guide (Rev. B) | PDF | HTML | 2023/8/29 |
設計與開發
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TPS54336AEVM-010 — TPS54336A 同步降壓轉換器評估模組
TPS54336AEVM-010 是完全組裝且經過測試的電路，可用於評估 TPS54366A 同步降壓 SWIFT™ 轉換器。EVM 可將 8V 至 28V 的輸入電壓轉換為穩壓 5V 輸出，提供最高 3A 電流。TPS54336A 整合 MOSFET 並採用電流模式控制，降低外部元件數量，以達成小型化設計。透過整合式高壓側與低壓側 MOSFET、低靜態電流與低負載下的脈衝略過技術，盡可能提升效率。啟用致能針腳後可進入關機模式，使電源靜態電流降至 2μA。
TIDA-01365 — 雙向 RS-485 扇出集線器參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| VSON (DRC) | 10 | 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。