TPS54228
- D-CAP2™ Mode Enables Fast Transient Response
- Low Output Ripple and Allows Ceramic Output Capacitor
- Wide VIN Input Voltage Range: 4.5 V to 18 V
- Output Voltage Range: 0.76 V to 7 V
- Highly Efficient Integrated FETs Optimized
for Lower Duty Cycle Applications
– 155 mΩ (High-Side) and 108 mΩ (Low-Side) - High Efficiency, Less than 10 µA at Shutdown
- High Initial Bandgap Reference Accuracy
- Adjustable Soft Start
- Prebiased Soft Start
- 700-kHz Switching Frequency (fSW)
- Cycle-by-Cycle Overcurrent Limit
- Auto-Skip Eco-Mode™ for High Efficiency at Light Load
The TPS54228 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54228 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54228 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-Mode™ operation at light loads. Eco-Mode™ allows the TPS54228 to maintain high efficiency during lighter load conditions. The TPS54228 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54228 is available in 8-pin SO , 8-pin SOIC, and 10-pin VSON packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.
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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 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS54228 4.5-V to 18-V Input, 2-A Synchronous Step-Down Converter With Eco-Mode™ 数据表 (Rev. E) | PDF | HTML | 2016-8-31 | ||
| 技术文章 | Tips for making your embedded system’s power rail design smaller | PDF | HTML | 2019-9-23 | |||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 应用手册 | TPS54X28 应用指导 | 2015-9-2 | ||||
| 应用手册 | 基于带有纹波注入谷底检测定导通时间频域分析的D-CAP2™频率响应模型 | 英语版 | 2015-9-2 |
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）。
TPS54228EVM-686 — 用于具有轻载效率的 TPS54228 同步降压转换器的评估模块
PMP4472 — 交流输入、5V/3.3V 2A 级联电源参考设计
PMP4472 是一款电源参考设计，具有高交流输入，5Vout，随后是
一个 2A 时的 3.3V 直流隔离输出。该设计实现了高效控制器 UCC28740，以提供 5V 总线电压和降压转换器 TPS54228。该设计可实现良好的线路和负载调节，以及良好的动态响应和低输出纹波电压。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| VSON (DRC) | 10 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
订购和质量
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