公开(公告)号：US5781418A

公开(公告)日：1998-07-14

申请号：US773243

申请日：1996-12-23

申请人： Chin Chang ,  Joseph En-Cheng Chang

发明人： Chin Chang ,  Joseph En-Cheng Chang

IPC分类号： H05B41/24 ,  H02M7/5383 ,  H02M7/53846 ,  H05B41/282 ,  H05B41/285 ,  H05B41/298 ,  H05B41/392 ,  H02M3/335 ,  G05F1/00

CPC分类号： H02M7/53803 ,  H05B41/2828 ,  H05B41/2856 ,  H05B41/2986 ,  H05B41/3925 ,  H02M2007/4815 ,  H02M2007/53878 ,  Y02B70/1441

摘要： A power supply is disclosed which includes a resonant circuit, and a voltage-fed inverter producing an applied voltage at an output coupled to the resonant circuit, the inverter responsive to a driving signal. A driving circuit has an input representing the sensed current flowing through the resonant circuit and includes phase-shifting circuitry. The driving circuit produces the driving signal based on phase-shift of the sensed current by the phase-shifting circuitry.

摘要翻译： 公开了一种电源，其包括谐振电路，以及在耦合到谐振电路的输出端处产生施加电压的电压反相逆变器，所述逆变器响应于驱动信号。 驱动电路具有表示流过谐振电路的感测电流的输入，并且包括相移电路。 驱动电路基于相移电路对感测电流的相移产生驱动信号。

公开(公告)号：US06541925B1

公开(公告)日：2003-04-01

申请号：US09195297

申请日：1998-11-18

申请人： Chin Chang ,  Joseph En-Cheng Chang ,  Gert W. Bruning

发明人： Chin Chang ,  Joseph En-Cheng Chang ,  Gert W. Bruning

IPC分类号： H05B3702

CPC分类号： H02M7/538 ,  H02M2007/4815 ,  H05B41/2828 ,  Y02B70/1441

摘要： A resonant converter which may be employed as an electronic ballast for a gas discharge lamp, the converter being in the form of a full or half bridge circuit which includes at least a pair of power switches such as MOSFET's. The gates of the switches are actuated by substantially square wave cyclic gating signals having complementary duty cycle ratios and a frequency somewhat above a resonant frequency of the converter circuit. The energy supply to the lamp is variable in accordance with the duty cycle ratios of the gating signals. In order to avoid generation of high voltage and current transients in the converter when a change in operating state requiring a substantial change in duty cycle ratios of the gating signals is to be performed, as when effecting turn-on or turn-off of the lamp, the changes in the duty cycle ratio are ramped to occur incrementally over several cycles of the gating signals rather than directly to required final values of the duty cycle ratios.

摘要翻译： 可用作气体放电灯的电子镇流器的谐振转换器，该转换器为全桥或半桥电路的形式，其包括至少一对功率开关（例如MOSFET）。 开关的栅极由具有互补占空比的基本上方波的循环门控信号和稍微高于转换器电路的谐振频率的频率致动。 灯的能量供应根据门控信号的占空比而变化。 为了避免产生转换器中的高电压和电流瞬变，当需要进行门控信号的占空比的实质性变化的工作状态改变时，当进行灯的接通或关断时 ，占空比比的变化在门控信号的几个周期上逐渐增加，而不是直接地与占空比的所需最终值相比。

公开(公告)号：US6016257A

公开(公告)日：2000-01-18

申请号：US909922

申请日：1997-08-12

申请人： Chin Chang ,  Joseph En-Cheng Chang ,  Gert W. Bruning

发明人： Chin Chang ,  Joseph En-Cheng Chang ,  Gert W. Bruning

IPC分类号： H05B41/24 ,  H02M7/5383 ,  H02M7/53846 ,  H05B41/282 ,  H05B41/285 ,  H05B41/298 ,  H05B41/392 ,  H02M3/335

CPC分类号： H02M7/53846 ,  H02M7/53803 ,  H05B41/2828 ,  H05B41/2856 ,  H05B41/2986 ,  H05B41/3925 ,  H02M2007/4815 ,  H02M2007/53878 ,  Y02B70/1441

摘要： A power supply, including a resonant circuit having an output voltage and a current oscillating therethrough, and a voltage-fed half-bridge inverter producing a source voltage at an output coupled to the resonant circuit. The inverter is responsive to a driving signal. A driving circuit has a first input representing the sensed current oscillating through the resonant circuit, a second input representing the output voltage, and a reference voltage. The driving circuit includes compensation circuitry for maintaining the output voltage at the reference voltage and commanding a phase shift angle, and phase-shifting circuitry producing the driving signal based on a phase-shift of the sensed current. The amount of phase shift is commanded by the compensation circuitry.

摘要翻译： 一种电源，包括具有输出电压和通过其振荡的电流的谐振电路，以及在耦合到谐振电路的输出处产生源极电压的电压馈电半桥逆变器。 变频器响应于驱动信号。 驱动电路具有表示通过谐振电路振荡的感测电流的第一输入，表示输出电压的第二输入和参考电压。 驱动电路包括用于将输出电压维持在参考电压并指令相移角的补偿电路，以及基于感测电流的相移产生驱动信号的相移电路。 相移量由补偿电路指令。