交流接触器节能芯片ZDLX-1H的设计研究

Design and Research of the Energy-Saver IC ZDLX-1H for AC Contactor

根据"强电吸合,弱电吸持"的原理,设计了一款能根据外电压的变化智能调整导通角宽度的交流接触器专用节能芯片ZDLX-1H(浙大绿芯1号),并采用CSMC 0.5μm数模混合CMOS工艺实现。以该芯片为核心的节能器与220 V/380 V的交流接触器配合使用,能使交流节能器接触器节电率达到90%以上。此外,芯片ZDLX-1H还具有过压报警、欠压报警和温度报警功能,提高了系统工作的安全性和可靠性。芯片静态工作电流300μA,功耗1.5mW。与目前市场上已有的以单片机为核心的节能器相比,由于ZDLX-1H不含9 kHz以上的振荡信号,不需要做对外干扰的EMI实验,因而包含节能器和交流接触器的整机更易通过国家标准GB8871—2001中的EMC项目测试。

According to the working principle ＂AC close, AC hold＂ of AC contactors, the integrated circuit called ZDLX-1H with intelligent conduction angle modulation according to the wave of supply voltage for AC contactors was proposed, and the chip was implemented based on the CSMC 0.5 μm mixed-signal CMOS process. The energy-saver for AC contactor based on the chip working with 220V/380 V AC contactor can make the AC contactors save about 90%energy. In addition, the chip ZDLX-1H also comes with the over-voltage alarm, under-voltage alarm, temperature alarm so that it can improve the safety and reliability of the whole system. The static current of the chip is 300 μA and the power consumption is only 1.5 mW. Compared with the energy-saver based on MCU which is already existing in the market,, the energy-saver based on ZDLX-1H contains no more than 9 kHz oscillator which can pass the EMC test mentioned in the GB8871—2001 without EMI test. more easily.