IR IR3895 16A SupIRBuck 同步降压稳压器解决方案

IR公司的IR3895是SupIRBuck容易使用的全集成和高效率的同步降压DC/DC稳压器,包括了PWM控制器和MOSFET,输入电压5-12V,输出电压0.5V到0.86xVin,输出电流高达16A,可编开关频率高达1.5MHz,内部数字软起动/软停止.主要用在网络设备,嵌入通信系统,服务器,存储设备和分布式POL电源架构.本文介绍了IR3895主要特性, 方框图, POL转换器应用电路图和推荐的材料清单,以及IR3895评估板主要特性,电路图,材料清单和PCB元件布局图.

The IR3895 SupIRBuckTM is an easy‐to‐use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3895 a space‐efficient solution, providing accurate power delivery for low output voltage applications.

IR3895 is a versatile regulator which offers programmability of switching frequency and internal current limit while operates in wide input and output voltage range.

The switching frequency is programmable from 300kHz to 1.5MHz for an optimum solution.

It also features important protection functions, such as Pre‐Bias startup, thermally compensated current limit, over voltage protection and thermal shutdown to give required system level security in the event of fault conditions.

IR3895主要特性:

 Single 5V to 21V application

 Wide Input Voltage Range from 1.0V to 21V with external Vcc

 Output Voltage Range: 0.5V to 0.86* Vin..

查看全文