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首页 > 产品中心 > 电源管理 > DC降压型转换器 > Buck降压型芯片 > 4.5V至24V电池输入PWM控制器恒导通控制方案CXSD62358驱动同步整流器FET恒定的开关频率
4.5V至24V电池输入PWM控制器恒导通控制方案CXSD62358驱动同步整流器FET恒定的开关频率
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CXSD62358PWM控制器采用恒导通控制方案,可以方便地处理宽输入/输出电压比,在保持相对恒定的开关频率的同时,对负载瞬态提供100ns的“瞬时通”响应。CXSD62358通过消除传统电流模式PWMs中的电流感应电阻,以较低的成本实现了高效率。驱动超大同步整流mosfet的能力进一步提高了效率。单级降压转换允许这些设备直接降压高压电池,以获得尽可能高的效率

 4.5V至24V电池输入PWM控制器恒导通控制方案CXSD62358驱动同步整流器FET恒定的开关频率
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1.产品概述       2.产品特点     hhW嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)hhW嘉泰姆

5.产品封装       6.电路原理图  hhW嘉泰姆

7.相关产品hhW嘉泰姆

   产品概述 返回TOPhhW嘉泰姆


    CXSD62358 PWM controller uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The CXSD62358 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by an ability to drive very large synchronous rectifier MOSFETs. Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the +5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size. The CXSD62358 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 0.75V. CXSD62358 LDO controller can drive an external NMOSFET to provide a second output voltage from PWM output or other power source. It is adjusted output from 0.75V. The independent enable input, open-drain power good indicator, under-voltage protection and soft-start are provided for system application. The CXSD62358 is available in 16-pin TQFN (3X3) package

   产品特点 返回TOPhhW嘉泰姆


--PWM Controller hhW嘉泰姆

„ Ultra-High Efficiency hhW嘉泰姆

„ No Current-Sense Resistor (Lossless ILIMIT) hhW嘉泰姆

„ Quasi-PWM with 100ns Load-Step Response hhW嘉泰姆

„ 1% VOUT Accuracy Over Line and Load hhW嘉泰姆

„ 0.75V to 3.6V Adjustable Output Range hhW嘉泰姆

„ 4.5V to 24V Battery Input Range hhW嘉泰姆

„ OVP & UVP hhW嘉泰姆

„ 1.7ms Soft-Start hhW嘉泰姆

„ Drives Large Synchronous-Rectifier FETs hhW嘉泰姆

„ Power-Good Indicator hhW嘉泰姆

--LDO Controller hhW嘉泰姆

„ 1.5% Accuracy Over Line and Load hhW嘉泰姆

„ Adjustable Output down to 0.75V hhW嘉泰姆

„ Independent Enable and Power Good Indicator hhW嘉泰姆

„ Drives N-channel MOSFET within Rail to Rail Controller Voltage hhW嘉泰姆

„ MLCC and POSCAP StablehhW嘉泰姆

   应用范围 返回TOPhhW嘉泰姆


„ Notebook ComputershhW嘉泰姆

„ CPU Core Supply hhW嘉泰姆

„ Chipset/RAM Supply as Low as 0.75V hhW嘉泰姆

„ 1.8V and 2.5V I/O Supply hhW嘉泰姆

„ Networking Power SupplyhhW嘉泰姆

   技术规格书(产品PDF) 返回TOP hhW嘉泰姆


     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hhW嘉泰姆

 QQ截图20160419174301.jpghhW嘉泰姆

产品封装图 返回TOPhhW嘉泰姆


image.pnghhW嘉泰姆

电路原理图 返回TOPhhW嘉泰姆

 hhW嘉泰姆


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