TPS54335A
- 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
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS5433xA 4.5-V to 28-V Input, 3-A Output, Synchronous Step-Down DC-DC Converter datasheet (Rev. D) | PDF | HTML | 2016年 2月 10日 |
| Application brief | Simplify Voltage and Current Measurement in Battery Test Equipment (Rev. A) | PDF | HTML | 2022年 3月 10日 | |
| User guide | TPS54335A Step-Down Converter Evaluation Module User's Guide (Rev. A) | PDF | HTML | 2021年 10月 7日 | |
| Application note | How to Estimate Overshoot and Undershoot of Load Transients of a DC/DC Regulator | 2017年 12月 20日 | ||
| Application note | Using TPS54335A to Create an Inverting Power Supply (Rev. A) | 2017年 7月 19日 | ||
| Application note | Using TPS54335A to Create an Inverting Power Supply | 2017年 7月 13日 |
設計與開發
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TPS54335AEVM-010 — TPS54335A 同步降壓轉換器評估模組
TPS54335AEVM-010 是完全組裝且經過測試的電路，可用於評估 TPS54335A 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 2A 電流。TPS54335A 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，可實現 96.5% 的效率。啟用致能針腳後可進入關機模式，使電源靜態電流降至 2μA。
TPS54335A Unencrypted PSpice Average Model Package (Rev. A)
TPS54335A Unencrypted PSpice Transient Model Package (Rev. A)
TIDA-00714 — USB Type-C 與 USB PD 控制器電源開關與高速多工器參考設計
TIDA-080002 — 超便攜、低功耗 DLP® Pico™ qHD 顯示器參考設計
TIDA-01226 — 採用 DLP Pico 技術的精巧型 Full HD 1080p (高達 16 安培) 投影顯示參考設計
TIDA-01571 — 採用 DLP® 技術且具有增強亮度的可攜式低功耗 HD 顯示器參考設計
PMP9668 — 通用 uP 控制電池充電器 24Vin、最大 10 Aout、5/12V 2A 和 5V 4A、2 個 USB 連接埠參考設計
| 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
- 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
- 進行中持續性的可靠性監測
- 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。