SWITCHING REGULATOR, SEMICONDUCTOR INTEGRATED CIRCUIT, AND ELECTRONIC DEVICE

• Main Authors: FUKUMOTO YOSUKE, AKAHO TADASHI
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; BASIC ELECTRIC ELEMENTS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION; SEMICONDUCTOR DEVICES

The switching regulator has: a control unit for turning on/off an upper switch and a lower switch in a complementary manner in accordance with an output voltage; and a current extraction unit for extracting a constant current from a first end or a second end of an inductor. When under a light load, the control unit stops the switching control and fixes the upper switch and the lower switch in an off state. The constant current has positive temperature characteristics, wherein the value of the constant current is greater than or equal to a value obtained by subtracting leakage current of the lower switch from leakage current of the upper switch. 开关调节器具有：控制单元，用于依照输出电压以互补方式接通/关断上部开关和下部开关；以及电流提取单元，用于从电感器的第端或第二端提取恒定电流。当在轻负载下时，所述控制单元停止所述开关控制并将所述上部开关和所述下部开关固定在断开状态。恒定电流具有正温度特性，其中所述恒定电流的值大于或等于通过从所述上部开关的漏电流中减去所述下部开关的漏电流而获得的值。