This study proposes a buck converter IC with voltage-mode pulse-width modulation (PWM) controller to provide a stable bias voltage for the brushless DC motor drive. The proposed buck converter IC comprises an error amplifier, a hysteresis comparator, a linear ramp generator, a driving circuit, a non-overlapping circuit, a bootstrap circuit and a level shifter. By integrating these proposed circuits into a single chip, the performance of buck converter chip could be improved significantly. The PWM controlled signal was used to generate a suitable output voltage by modifying the duty cycle. The advantage of this method is that the control method of the feedback circuit can be implemented easily, has a short ON time, and has effective noise immunity. After verifying the designed functions, the proposed IC was fabricated using TSMC 0.25 μm 1P3M complementary metal oxide semi-mixed signal process. Measurement results illustrate that the output voltage, output current, line regulation, load regulation, output ripple voltage and peak power efficiency were 5 V, 200 mA, 13.33 mV/V, 18.5 mV/A, 30 mV, and 68%, respectively, at an input voltage of 15 V and a switching frequency of 100 kHz. The chip area was ∼1.480 × 0.999 mm ² .

中文翻译：

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采用电压模式PWM控制器的无刷直流电机驱动器的降压转换器IC

这项研究提出了一种具有电压模式脉宽调制（PWM）控制器的降压转换器IC，可为无刷直流电动机驱动器提供稳定的偏置电压。提出的降压转换器IC包括误差放大器，磁滞比较器，线性斜坡发生器，驱动电路，非重叠电路，自举电路和电平转换器。通过将这些建议的电路集成到单个芯片中，可以显着提高降压转换器芯片的性能。PWM控制信号用于通过修改占空比来生成合适的输出电压。该方法的优点在于，反馈电路的控制方法可以容易地实现，导通时间短，并且具有有效的抗噪声能力。在验证了设计功能之后，使用TSMC 0制造了所建议的IC。25μm1P3M互补金属氧化物半混合信号工艺。测量结果表明，输出电压，输出电流，线路调整率，负载调整率，输出纹波电压和峰值功率效率分别为5 V，200 mA，13.33 mV / V，18.5 mV / A，30 mV和68％。输入电压为15 V，开关频率为100 kHz。切屑面积约为1.480×0.999 mm ² 。