Then , a peak current control pfm dc - dc boost converter was presented , which integrated with under voltage , over voltage , current limit and soft start protecting blocks 然后,根据当前功率集成电路的现状和发展趋势,论文设计了一种基于升压型pfm调制方式的dc - dc电源转换控制芯片。
If the qsc device implements current limiting , the excessive current would combine with the potentially large voltage drop across the pass transistor to generate unwanted heat within the handset as well Qsc器件实现电流限制,过多的电流会和潜在地大压降结合起来,通过晶体管产生不必要的发热。
The function modules of the system with tms320f240 as its central unit are illuminated . the flowcharts of the program and the subprograms by means of current limit starting are all given 按功能模块说明了以tms320f240为其核心的硬件电路,给出了限流软起动方式的主程序流程以及各个子程序流程。
Now we are researching on engineering application of the novel solid state fault current limiting . first , the paper expatiate on the importance and background of fault current limiting technology 论文首先阐述了短路限流技术的重要性和发展背景,介绍了目前国内外流行的一些限流技术及其优缺点。
In actual applications , the efficiency is same as the conventional linear charger when the ic is powered by constant voltage source and is similar to pulse or switch charger when current limited source is used for power supply 实际应用中,当采用恒压作为电源时,其效率与传统的线性充电器相同;当采用具有电流限制功能的电源时,效率接近脉冲充电器和开关充电器。
Current limiting is the practice in electrical or electronic circuits of imposing an upper limit on the current that may be delivered to a load with the purpose of protecting the circuit generating or transmitting the current from harmful effects due to a short-circuit or similar problem in the load. This term is also used to describe the ability of an overcurrent protective device (fuse or circuit breaker) to reduce the peak current in a circuit, by opening and clearing the fault in a sub-cycle time frame.