NS LM3152 12A开关电源控制方案

NS公司的LM3151/2/3 是SIMPLE SWITCHER ®控制器,能为降压稳压器提供高达12A的输出电流,输入电压从6V到42V,输出电压3.3V,开关频率250 kHz, 500 kHz和750 kHz,不需要回路补偿.可用于高性能DSP,FPGA,ASIC和微处理器,宽带,网络和光纤通信基础设备,路由器,安全监视和电源模块.本文介绍了LM3151/2/3的主要特性, 方框图以及演示板电路图和演示板材料清单(BOM).

The LM3151/2/3 SIMPLE SWITCHER ® Controller is an easy to use and simplified step down power controller capable of providing up to 12A of output current in a typical application. Operating with an input voltage range of 6V-42V, the LM3151/2/3 features a fixed output voltage of 3.3V, and features switching frequencies of 250 kHz, 500 kHz, and 750 kHz. The synchronous architecture provides for highly efficient designs. The LM3151/2/3 controller employs a Constant On-Time (COT) architecture with a proprietary Emulated Ripple Mode (ERM) control that allows for the use of low ESR output capacitors, which reduces overall solution size and output voltage ripple. The Constant On-Time (COT) regulation architecture allows for fast transient response and requires no loop compensation, which reduces external component count and reduces design complexity.
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