TPS54231
- 3.5- to 28-V Input Voltage Range
- Adjustable Output Voltage Down to 0.8 V
- Integrated 80-mΩ High-Side MOSFET
Supports up to 2 A Continuous Output
Current - High Efficiency at Light Loads with a
Pulse Skipping Eco-mode™ - Fixed 570-kHz Switching Frequency
- Typical 1-µA Shutdown Quiescent
Current - Adjustable Slow-Start Limits Inrush
Currents - Programmable UVLO Threshold
- Overvoltage Transient Protection
- Cycle-by-Cycle Current Limit, Frequency
Fold Back and Thermal Shutdown Protection - Available in Easy-to-Use SOIC8 Package
- Supported by WEBENCH® Software Tool
(www.TI.com/WEBENCH) - APPLICATIONS
- Consumer Applications such as Set-Top Boxes,
CPE Equipment, LCD Displays, Peripherals, and
Battery Chargers - Industrial and Car Audio Power Supplies
- 5-V, 12-V and 24-V Distributed Power Systems
- Consumer Applications such as Set-Top Boxes,
WEBENCH Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners
The TPS54231 device is a 2-V, 2-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.
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 | TPS54231 2-A, 28-V Input, Step-Down DC-DC Converter With Eco-mode™ 数据表 (Rev. D) | PDF | HTML | 2014-10-24 | ||
| 应用手册 | Low Dropout Operation in a Buck Converter (Rev. A) | 2019-4-1 | ||||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 应用手册 | 800VA Pure Sine Wave Inverter's Reference Design (Rev. A) | PDF | HTML | 2017-8-1 | |||
| 应用手册 | Using TPS54335A to Create an Inverting Power Supply (Rev. A) | 2017-7-19 | ||||
| 应用手册 | Understanding Eco-mode(TM) Operation | 2016-12-5 | ||||
| 应用手册 | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012-10-26 | ||||
| 应用手册 | Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) | 2010-9-15 |
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)。
TPS54231EVM-372 — TPS54231EVM-372 2A, 3.5V to 28V Input SWIFT (tm) Converter Evaluation Module
TPS54231EVM-372 是一款组装完备且经过测试的电路,用于评估 TPS54231 同步降压 SWIFT™ 转换器。此 EVM 可将 7V 至 28V 的输入电压转换为 3.3V 的稳压输出电压,输出电流最高为 2A。开关频率在内部设置为 570kHz 的标称值。TPS54231 封装内部采用了高侧 MOSFET 以及栅极驱动电路。MOSFET 的低漏源导通电阻有助于 TPS54231 实现高效率,并在输出电流较高的情况下帮助保持低结温。补偿组件位于集成电路 (IC) 外部,而外部除法器能实现可调节的输出电压。此外,TPS54231 还提供可调节慢启动和欠压锁定输入。
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
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