会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明公开
    • Power factor corrector with high power factor at low load or high mains voltage conditions
    • Leistungsfaktorregler mit hohem Leistungsfaktor bei Schwachlast oder hohen Netzspannungsbedingungen
    • EP2605387A2
    • 2013-06-19
    • EP13153614.6
    • 2010-12-28
    • NXP B.V.
    • Halberstadt, HansZhang, Cheng
    • H02M1/42
    • H02M1/4225G05F5/00H02M3/156H02M2001/0025H02M2001/0032Y02B70/126Y02B70/16
    • Various example embodiments relate to a power factor corrector for low loads and a related method. The power factor corrector raises power factor at low loads or high mains voltages by modifying the switch timing or the current received by the power converter. Various embodiments achieve this by increasing the switch-on time of a control switch during the falling time so that the majority of the switch-on time during a mains period occurs during the falling time. Various embodiments may control the current received by the converter to compensate for current received by the intermediate filter. Some embodiments may employ a feedback system to produce one or more error signals that modify the control signal used to control the operation of the converter. Various embodiments may also include additional stages that limit the compensation range of the error signal.
    • 各种示例性实施例涉及用于低负载的功率因数校正器和相关方法。 功率因数校正器通过修改开关时序或电源转换器接收到的电流来提高低负载或高电源电压下的功率因数。 各种实施例通过在下降时间期间增加控制开关的接通时间来实现这一点,使得在电力周期期间的大部分接通时间在下降时间期间发生。 各种实施例可以控制由转换器接收的电流来补偿由中间滤波器接收的电流。 一些实施例可以采用反馈系统来产生修改用于控制转换器的操作的控制信号的一个或多个误差信号。 各种实施例还可以包括限制误差信号的补偿范围的附加级。
    • 8. 发明公开
    • A circuit for a resonant converter
    • Schaltkreisfüreinen Resonanzwandler
    • EP2458723A1
    • 2012-05-30
    • EP10251997.2
    • 2010-11-24
    • NXP B.V.
    • Halberstadt, HansPansier, Frans
    • H02M3/156H02M3/335
    • H02M3/337H02M3/33515H02M2001/0035H02M2001/0058Y02B70/1433Y02B70/1491Y02B70/16Y02P80/112
    • A circuit (1202) for a resonant converter (1204; 1326), the resonant converter configured to operate in a burst mode of operation, the circuit configured to:
      receive a signal (1206; 1308) representative of the output of the resonant converter;
      compare the received signal (1206; 1308) representative of the output of the resonant converter with a reference signal (1208; 1304) in order to provide an error signal (1310); and
      process the error signal (1310) in order to provide a control signal (1210; 1328), wherein the control signal (1210; 1328) is configured to set the switching frequency of the resonant converter in order to control the output power during the on-time of a burst of the resonant converter.
    • 一种用于谐振转换器(1204; 1326)的电路(1202),所述谐振转换器被配置为以突发模式操作,所述电路被配置为:接收表示所述谐振转换器的输出的信号(1206; 1308) 将表示谐振转换器的输出的接收信号(1206; 1308)与参考信号(1208; 1304)进行比较,以便提供误差信号(1310); 并处理所述误差信号(1310)以提供控制信号(1210; 1328),其中所述控制信号(1210; 1328)被配置为设置所述谐振转换器的开关频率,以便在所述控制信号 谐振转换器的突发的导通时间。
    • 9. 发明公开
    • A controller for an additional converter
    • SteuereinheitfüreinenzusätzlichenWandler
    • EP2456058A1
    • 2012-05-23
    • EP10251990.7
    • 2010-11-23
    • NXP B.V.
    • Pansier, FransSmeets, Patrick Emanuel GerardusShrestha, RamesworNowak, KatarzynaHalberstadt, HansHoogzaad, Gian
    • H02M3/335
    • H02M3/33561Y02B70/1433Y02P80/112
    • A controller (302) for an additional voltage converter, wherein the additional converter receives current from a main resonant converter. The controller is configured to provide a switch control signal for controlling a switch (312) of the additional converter. The controller comprises a first input configured to receive a first input signal (324) representative of a signal in the main resonant converter, and a delay component (332). The controller (302) is configured to determine when the first input signal (324) exceeds a zero value, and provide a signal to the delay component (332). The delay component (332) is configured to provide a switch control signal to the additional voltage converter such that the switch of the additional converter is operated after the expiry of a delay after the first input signal exceed a zero value in order to start a conduction period of the additional converter.
    • 一种用于附加电压转换器的控制器(302),其中附加转换器从主谐振转换器接收电流。 控制器被配置为提供用于控制附加转换器的开关(312)的开关控制信号。 控制器包括被配置为接收代表主谐振转换器中的信号的第一输入信号(324)的第一输入端和延迟元件(332)。 控制器(302)被配置为确定第一输入信号(324)何时超过零值,并且向延迟部件(332)提供信号。 延迟部件(332)被配置为向附加电压转换器提供开关控制信号,使得附加转换器的开关在第一输入信号超过零值的延迟期满之后被操作以便开始传导 周期的附加转换器。