ALTERA/阿尔特拉 电源 EN2340QI 开关稳压器 4A DC/DC BUCK CONVT W/ INDUCTOR EN2340QI 3003 ALTERA/阿尔特拉 QFN68 19+ ￥20.0003元100~499 个 ￥15.0003元500~999 个 ￥10.0003元>=1000 个 深圳市星佑电子有限公司 5年 查看下载 立即询价 查看电话 QQ联系 ...
摘要传统双有源桥单级AC-DC变换器的移相调制难以实现全范围软开关,开关管损耗大,效率难以进一步提高。针对此问题,该文提出一种基于临界电流模式(BCM)的调制策略,将移相和调频相结合,实现所有开关管的零电压开通,从而有效地降低了开通损耗。该文分析单级式双向AC-DC变换器的临界电流调制基本原理和软开关实现条件,并...
为提升双有源桥(DAB)DC-DC变换器的效率和动态响应速度,在三重移相控制的基础上,提出一种混合优化控制策略。首先,从三重移相控制下的DAB工作模式中,选出两种作为变换器的实际工作模式,并引入新的外移相角,用以降低变换器建模和后续优化设计的难度;然后,分析这两种模式的工作特性,推导各自模式下的传输功率模型、电流...
Opening the switch breaks the current path from the module to the inductor very quickly, producing a large negative voltage spike as the inductor impedes the change in current passing through it. This action results in a high-frequency noise pulse and, potentially, arcing across the open switch...
This paper introduces an optimized DC–DC converter that employs a modified switched inductor-capacitor technique to achieve ultra-high voltage gain for renewable energy systems. The development is based on adding one cell of modified switched inductor (
When operating in continuous conduction mode (CCM), the inductor current never drops to zero; when operating in discontinuous conduction mode (DCM), the inductor current can drop to zero. Low-power buck converters rarely operate in DCM. The current ripple, shown as ΔIL in Figure 2, is ...
Maximum temperature specs on inductors, especially the smaller enclosed kind are often in the 100°C range, so if the inductor is getting to the finger burning stage, the current load on the DC-DC converter should be reduced to avoid overheating this device. Output Filtering DC-DC converters ...
converter. For the inductor, the rated current should not be less than that of the output of the DC-DC converter. At the rated current, the DC resistance of the inductor should be such that the voltage drop across the inductor is less than 2 percent of the rated voltage of the DC-DC...
In this case a 3.3µH inductor was selected, which solved the sub-harmonic instability over the full input voltage and load range, see figure 28. This effect can also be simulated with the Richtek Designer simulation tool. For another example where wrong inductor value selection can lead ...
DC-DC电路中电感的意义及选择