日前，德州仪器(TI) 宣布推出最新系列稳压器，其可在不影响效率及电源性能的情况下，提供业界最低噪声的1 A 开关电源，从而可充分满足当前噪声敏感型医疗、工业以及电信设计在峰值性能下正常工作而对平稳安静电源的需求。TI QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" 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title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply" title="QuietSupply">QuietSupply™ 稳压器系列的首款产品TPS54120 与其它电源转换器件相比，可将开关噪声锐降达99%，并可帮助最大限度提高精确数据转换器与放大器以及灵敏时钟分配电路的性能，充分满足电信、测试设备以及高端音频视频设备等应用的使用需求。更多详情，敬请访问：www.ti.com.cn/product/cn/tps54120 。

TPS54120 的主要特性与优势

·        99% 的噪声降低：100 Hz 至100 kHz 时为9 µVRMS，100 Hz 至1 MHz 时为17 µVRMS；

·        高性能：高电源抑制比(PSRR)，10 kHz 时为83 db，100 kHz 时为70 dB；

·        高设计灵活性：同步于200 kHz 至1.2 MHz 的外部时钟；

·        4.5 V 至17 V 的宽泛输入电压，可调输出为0.8 V 至6.0 V。

安静的电源管理

除TPS54120 外，TI 还提供支持低噪声、宽泛输入电压与高PSRR 性能的丰富低压降线性稳压器(LDO)，如TPS7A8101、TPS7A3001、TPS7A4901 以及超低噪声LP5900 与LP8900 稳压器等。此外，完整的参考设计与评估板可加速产品上市进程。   

供货情况

采用散热增强型4 毫米 x 4 毫米、20 引脚QFN 或TSSOP 封装的TPS54120 现已开始批量供货，可通过TI 及其授权分销商进行订购。简单易用的TPS54120EVM-103 包含支持内部散热与电流限制关断的低噪声1 A 解决方案所需的所有外部组件、电源状态良好输出监控器、跟踪以及启用／禁用电路系统。

查阅有关TI LDO 系列、应用手册以及评估板的更多详情：

·        新版LDO 快速参考指南涵盖National 与TI 合并后的LDO 产品系列；

·        使用TI 线性稳压器的易用型应用设计手册海量库；

·         有关TI LDO 的系列视频；

·        通过TI在线技术支持社区咨询问题，并帮助解决技术难题：www.deyisupport.com。