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High Frequency Full Digital Dimming Ballast for a Compact Lamp

机译：紧凑型灯的高频全数字调光镇流器

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This paper proposes a full-digital dimming ballast with a dedicated Digital Power Controller (DPC) having a driving frequency of 200～400[KHz] with a digital control method. The DPC has Digital Pulse Width Modulation (DPWM) of 8 or 12-Bits resolution, as well as a typical microcontroller feature including a sampled 8-bit AID converter with an internal programmable memory. The variable frequency is used to drive the series-resonant network with a compact fluorescent lamp. By changing the driving frequency, the lamp can be preheated for accurate pre-heating time. A 32[W] power compact fluorescent lamp from GE lighting is tested with a running frequency of 200[KHz] for maximum power and a pre-heating frequency of 400[KHz] without any passive components for setting pre-heating or driving frequencies. The full digital ballast is implemented with a dedicated digital power controller (DPC). Without any external R and C, the pre-heating time and various driving frequencies can be programmed and adjusted according to an operating condition for a best lamp control. In addition, the driving frequency is increased up to 400[KHz] with 8-Bit resolution so that the series inductor of 330[uH] and resonant capacitor of 1.5[nF] are used. The experimental results are provided.
机译：本文提出了一种全数字调光镇流器，它采用数字控制方法，具有专用的数字功率控制器（DPC），其驱动频率为200〜400 [KHz]。 DPC具有8位或12位分辨率的数字脉宽调制（DPWM），以及典型的微控制器功能，包括带有内部可编程存储器的采样8位AID转换器。可变频率用于通过紧凑型荧光灯驱动串联谐振网络。通过更改驱动频率，可以对灯进行预热，以获得准确的预热时间。 GE照明的32 [W]功率紧凑型荧光灯在最大运行功率200 [KHz]和400 [KHz]的预热频率下进行了测试，没有任何用于设置预热或驱动频率的无源组件。全数字镇流器通过专用数字电源控制器（DPC）实现。无需任何外部R和C，就可以根据工作条件对预热时间和各种驱动频率进行编程和调整，以实现最佳的灯泡控制。另外，以8位分辨率将驱动频率提高到400 [KHz]，因此使用了330 [uH]的串联电感和1.5 [nF]的谐振电容器。提供了实验结果。

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