用于LED驱动应用的片上补偿宽输出范围升压转换器及固定频率自适应关断时间控制

An on-chip compensated wide output range boost converter with fixed-frequency adaptive off-time current-mode control is presented. The small signal characteristic of the boost converter with current-mode control is reviewed, and an adaptive current sensing technique is proposed to reduce the variation of phase margin at different output voltages. On-chip compensation is achieved with a Type II com...