【正文】 和控制技術(shù)的結(jié)合。在今后 5 年內(nèi)仍然將沿這些方向發(fā)展。 2 遠(yuǎn)程火箭控制系統(tǒng)的 DC－ DC 開關(guān)電源，要求發(fā)射過(guò)程中高度可靠。 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 the power grid measuring only a few corporations with the APFC ,80 technology can improve To to , both the management of the power grid harmonic pollution and also improve the overall efficiency of the power switch. APFC is a singlephase DCDC converter topology and power factor control of specific applications, while the threephase APFC ThreePhase PWM switch is rectifier topology and control technology with 5. Magic ponents of new magic materials and the development of a new transformer. Such as integrated magic circuit, the plane Cores, ultrathin (Low profile) transformer and a new transformer such as piezoelectric , No Cores printed circuit (PCB) transformer, so that the power switch can reduce the size of the weight of many 6. Capacitors and EMI filter new advances in technology, so that small switching power supply and improve the performance of EMC 7. Microprocessing For monitoring and switching power supply system of internal munication technology applications, improve the reliability of the power system. The late 1990s and made a new switching power supply of research and development, this is also the new century vision for the development of switching power supply. Such as: an AC DC converter or regulator to achieve steady flow, and a power factor correction feature, known as singlelevel (SingleSwitch Single Stage) or 4 S high power factor ACDC converter output 1 V, 50A of the lowvoltage highcurrent DCDC converters, also known as voltage regulator module VRM, to adapt to the next generation of ultrafast microprocessor power supply needs of multichannel (MultiChannel or MultiPhase) DCDC converter。 spacecraft, submarines, military power and switch the batteries used portable electron