CXSD6238专为4-8核高速ARM CPU供电的低压输出高效率的输出峰值电流可达5A的同步降压转换器高速I2C控制接口COT优点的控制模式 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
目录 1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（PDF文档） 一.产品概述 CXSD6238是一款专为4-8核高速ARM CPU供电的，低压输出高效率的，输出峰值电流可达5A的同步降压转换器。CXSD6238集成了高速I2C控制接口，输出电压可以通过此接口任意调整。同时其全新的结合电压模式和COT优点的控制模式实现了高速的负载瞬态响应。该芯片还具有输入过压保护功能，防止在机顶盒5V输入应用中热插拔损坏IC。CXSD6238采用2mm x 1.6mm的CSP-20封装，电感只需要0.33-0.47uH，占板面积极小，是主控CPU最佳的供电选择。 The CXSD6238 is a high-efficiency, DC-to-DC step-down switching regulator, capable of delivering up to 5A of pulse load. It integrates an I 2 C interface that dynamically scales the output voltages on demand. The DCDC control block belongs to a new breed of high frequency synchronous Step-Down converter that combines the advantages of voltage mode control and Constant-OnTime control. Its adaptive Constant-On-Time control dynamicallychanges switch on time to achievea constant switching frequency. It does not have the minimum ontime constrain normally a fixed-frequency current mode Step-down requires, allowing it to go down to very low duty ratio without affecting loop stability. The voltage mode nature also provides a more superior load transient response and a seamless transition from PFM to PWM modes. Cycle-by-cycle current limit provides output short-circuit protection and an input OVP function guards CXSD6238 against possible input voltage surge. CXSD6238 is housed in a 2mm x 1.6mm CSP-20 Package 二.产品特点 ◆I2C控制 ◆2.2MHz开关频率 ◆I 2 C Dynamic Output Control ◆ Synchronous High Efficiencyup to 95% ◆ Fast load transient response ◆ Capable of Delivering 5A ◆ Input OVP at 6V ◆No External Schottky Diode Needed ◆ Thermal shutdown and UVLO ◆ CSP-20 (4x5) package 三.应用范围 ◆智能手机 四.技术规格书（产品PDF) 需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！ 五.产品封装图 六.电路原理图
七.相关芯片选择指南
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CXSD6238专为4-8核高速ARM CPU供电的低压输出高效率的输出峰值电流可达5A的同步降压转换器高速I2C控制接口COT优点的控制模式
发表时间：2020-04-10浏览次数：4
