中英文翻译资料----开关电源发展轨迹(编辑修改稿)

中英文翻译资料----开关电源发展轨迹(编辑修改稿)内容摘要：

rspective, for several decades to promote switching power supply performance and constantly improve the technological level This should mark is: 1. A new highfrequency power semiconductor devices to achieve the development of highfrequency switching power supply may have. IGBT such as power MOSFET and has been fully replace the power transistor and SCR, so that small and mediumsized switch power 下作 Frequency of up to 400 kHZ (ACDC) and 1 MHZ (DCDC) level. Ultrafast restore power diode, MOSF ET asked further rectification technology for the development of efficient lowvoltage output (for example, 3 V) switching power supply for a possible . Are now exploring the development of highperformance high temperature carbonation power to block conductor devices 2. Softswitch technology enables efficient highfrequency converter with the realization may be. PWM switching power supply switchmode by hard work (on / off process BU voltage drop / rise and the current rise / fall waveform is overlap), thus the switching losses. Highfrequency switching power supply can reduce the volume of weight, but switching losses are greater (power and frequency is directly proportional). So we must Switching on power than / current wave of cross more technology, the socalled zerovoltage (ZVS) / the current (ZCS) switching technology, or softswitch technology (as opposed to PWM switching technology in terms of hardware), the small softswitching power supply efficiency Can be increased to 80 a 85 per cent. 1970s, switching power supply market was softswitch technology laid the foundation. After the new softswitch technology will continue to emerge, such as the quasiresonant (1980s) fullbridge phaseshift ZVSPWM, constant frequency ZVS PWM/ZCSPWM (80 in the late) ZVSPWM active clamp。 ZVTPWM/ZCTPWM (90 in the early) fullbridge phaseshift ZVZCSPWM (90 years), and so on. China has The latest softswitching technology to 6 Kw power of munication, efficiency up to 93% 3. Control Technology progress. Such as the current control and multiloop control, load control, a cycle control, power factor control, DSP control, and the corresponding private Integrated control of the successful development of the chip, so that switching power supply has greatly improved dynamic performance, the circuit also greatly simplified 4. Active Power Mission of Correction ( APFC) the development, improve the ACDC switching power supply power factor. Due to the importation Rectification of a capacitora device, ACDC switching power supply and a large class of the rectifier power supply electronic equipment (such as inverters, UPS), and so。