CAJ | 학술논문

摘要：许多开关电源中需要使用电流传感器，将电流大小以电压形式反馈至开关电源控制器，用以调节输入脉冲的占空比或进行电源保护。以往的开关电源往往使用一个串入电流通道的电阻作为电流传感器，利用电阻的压降反馈电流的大小。由于电阻是耗能元件，其将产生功耗。为克服电流传感电阻的功耗，本文采用霍尔传感器作为开关电源的电流传感器，并详细论述了霍尔传感器在开关电源中的设计使用方法。霍尔传感器的使用大大降低了因电流检测而产生的功耗，提高了开关电源的转换效率。
적요：허다개관전원중수요사용전류전감기，장전류대소이전압형식반궤지개관전원공제기，용이조절수입맥충적점공비혹진행전원보호。이왕적개관전원왕왕사용일개천입전류통도적전조작위전류전감기，이용전조적압강반궤전류적대소。유우전조시모능원건，기장산생공모。위극복전류전감전조적공모，본문채용곽이전감기작위개관전원적전류전감기，병상세논술료곽이전감기재개관전원중적설계사용방법。곽이전감기적사용대대강저료인전류검측이산생적공모，제고료개관전원적전환효솔。
Many switching power supply need use current sensor, make current size feedback to switching power supply controller by the voltage form, to adjust the duty ratio of input pulses or power supply protection. Before, switching power supply often use a string into the current channel resistance as current sensor, use the resistance pressure drop to feedback the size of the current. The resistance is energy dissipation components, it will produce power consumption. In order to overcome the current sensor resistance power consumption, this paper use a Hall sensors as switch power supply's current sensor, and detailed description the Hall sensors design and use methods in the switch power supply. Use hall sensor greatly reduces the power consumption on account of current detection , improve the transfer efficiency of switch power