TPS54308
- 4.5V to 28V wide input voltage range
- Integrated 85mΩ and 40mΩ MOSFETs for 3A, continuous output current
- Low 2µA shutdown, 300µA quiescent current
- Internal 5mS soft start
- Fixed 350kHz switching frequency
- Peak current mode control
- Internal loop compensation
- Overcurrent protection for both MOSFETs with hiccup mode protection
- Overvoltage protection
- Thermal shutdown
- SOT-23 (6) package
- Create a custom design using the TPS54308 with the WEBENCH Power Designer
The TPS54308 is a 4.5V to 28V input voltage range, 3A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation, and 5ms internal soft start to reduce component count.
By integrating the MOSFETs and employing the SOT-23 package, the TPS54308 achieves high-power density and offers a small footprint on the PCB.
The TPS54308 operates in force continuous conduction mode (FCCM) during light load conditions. The switching frequency is maintained at an almost constant level over entire load range.
Cycle-by-cycle current limit in both high-side MOSFETs protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit, which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| 应用手册 | 低纹波电源的峰值电流模式转换器次级滤波器设计 – 第 II 部 分:针对稳定性的混合检测网络设计 | PDF | HTML | 英语版 | PDF | HTML | 2024-2-28 | |
| 应用手册 | 低纹波电源的峰值电流模式转换器次级滤波器设计 – 第 I 部 分:用于减少输出纹波的滤波器设计 | PDF | HTML | 英语版 | PDF | HTML | 2024-2-23 | |
| 选择指南 | Buck Converter Quick Reference Guide (Rev. B) | 2021-4-8 | ||||
| 应用手册 | Designing a Simple and Low-Cost Flybuck Solution With the TPS54308 (Rev. A) | 2019-10-14 | ||||
| 应用手册 | Using the TPS54x02 to Create an Inverting Power Supply | 2018-6-15 |
设计与开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
TPS54308EVM-876 — TPS54308 4.5V 至 28V 输入、3A 输出同步降压转换器评估模块
TPS54308EVM-876 评估模块 (EVM) 旨在演示使用 TPS54308 稳压器进行设计时,可实现减小印刷电路板面积。开关频率在内部设置为 340 kHz 的标称值。TPS54308 封装内部采用了高侧和低侧 MOSFET 以及栅极驱动电路。MOSFET 的低漏源导通电阻有助于 TPS54308 实现高效率,并在输出电流较高的情况下帮助保持低结温。补偿元件被集成到集成电路 (...)
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-23-THN (DDC) | 6 | Ultra Librarian |
订购和质量
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