一种用于非接触供电车灯的无线反馈稳压电路设计

Design of Wireless Feedback Stable-voltage Circuit for the Car Lights with Contact-less Power Supply

为了在引擎盖、后备箱盖等灵活旋转的部件上装设车灯,设计出了用于非接触供电车灯的无线反馈稳压电路。主电路包括非接触供电原边电路和副边电路两部分,为了适应车载蓄电池的电压波动和不同功率的灯具对输出电压的影响,采用无线反馈稳压。无线反馈稳压电路对负载电压和电流取样并反馈,由单片机(ATmega16L)自动调节PWM输出的占空比,控制非接触供电原边电路的功率开关管,改变原边电路的输出功率,达到稳定负载电压的目的。经测试实验与仿真结果一致。

For installing lights in the hood, car lid flexible and rotating parts, wireless feedback stable-voltage circuit for the contact-less power supply car lights was designed. The main circuit included primary side and the second side. In order to adapt to voltage fluctuations of the car battery and the influence of the output voltage on the lanterns of different powers, wireless feedback stable-voltage was used. Wireless feedback stable-voltage circuit feedbacks and samplings the load voltage and the current, The single-chip computer （ATmegal6L） automatically adjusts PWM output duty ratio, controls the power MOSFET, changes the primary side of the output power of circuit, and achieves the purpose of the load voltage stability. According to the test, the experimental results and the simulation results are consistent.