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    • 2. 发明申请
    • SWITCHING CIRCUIT ARRANGEMENT
    • 切换电路布置
    • WO2007138509A3
    • 2008-03-06
    • PCT/IB2007051806
    • 2007-05-14
    • KONINKL PHILIPS ELECTRONICS NVPHILIPS INTELLECTUAL PROPERTYLOPEZ TONIELFERICH REINHOLD
    • LOPEZ TONIELFERICH REINHOLD
    • H03K17/16H02M3/158
    • H02M1/08H03K17/0822H03K17/166H03K17/687H03K2217/0036
    • A switching circuit arrangement (100) comprises a field effect transistor (40) and circuitry (50, 52, 54, 60, 62) for biasing the gate voltage of the field effect transistor (40), in particular forcing the gate voltage of the field effect transistor (40) under a certain threshold, in particular under a certain positive threshold level. In embodiments, reverse recovery as well as gate bounce are simultaneously mitigated. In one embodiment, the biasing circuitry comprises a biasing diode (52) connected in series to the gate (G) of the field effect transistor (40) to bias the gate voltage of the field effect transistor (40), as well as a clamping field effect transistor unit (62) connected between the gate (G) of the field effect transistor (40) and the source (S) of the field effect transistor (40) to force the gate voltage of the field effect transistor (40) under a certain threshold, in particular under a certain positive threshold level.
    • 开关电路装置(100)包括用于偏置场效应晶体管(40)的栅极电压的电场(50,52,54,60,62)的场效应晶体管(40),特别是迫使栅极电压 场效应晶体管(40)处于特定阈值下,特别是在一定的正阈值电平下。 在实施例中,反向恢复以及门反弹同时被减轻。 在一个实施例中,偏置电路包括与场效应晶体管(40)的栅极(G)串联连接以偏置场效应晶体管(40)的栅极电压的偏置二极管(52)以及钳位 场效应晶体管单元(62)连接在场效应晶体管(40)的栅极(G)和场效应晶体管(40)的源极(S)之间,以迫使场效应晶体管(40)的栅极电压在 特定的阈值水平。
    • 3. 发明申请
    • DRIVER CIRCUIT FOR DRIVING A LOAD CIRCUIT
    • 用于驱动负载电路的驱动电路
    • WO2011101761A3
    • 2011-12-08
    • PCT/IB2011050436
    • 2011-02-01
    • KONINKL PHILIPS ELECTRONICS NVPHILIPS INTELLECTUAL PROPERTYELFERICH REINHOLD
    • ELFERICH REINHOLD
    • H02M3/335
    • H02M3/33523H02M3/33561H05B33/0815
    • Driver circuits (1) for driving load circuits comprise transformer circuits (21) with primary side windings to be coupled to source circuits and with secondary side windings to be coupled to the load circuits. By providing the driver circuits (1) with determination circuits (22) for determining secondary side currents as functions of primary side currents, primary side voltages, primary side inductances and transformer ratios, the secondary side currents can be determined solely at primary sides of the transformer circuits (21). Functions may define secondary side currents to be proportional to differences between first signals proportional to integrals of primary side voltages divided by primary side inductances and second signals proportional to primary side currents, the differences being multiplied by the transformer ratios. The primary side inductances may be inductances measured at primary sides and the transformer ratios may be voltage ratios of the transformer circuits (21), both for open secondary sides of the transformer circuits (21).
    • 用于驱动负载电路的驱动器电路(1)包括具有初级侧绕组的变压器电路(21),其耦合到源电路,并且次级侧绕组耦合到负载电路。 通过为驱动器电路(1)提供用于确定次级侧电流作为初级侧电流,初级侧电压,初级侧电感和变压器比的函数的确定电路(22),次级侧电流可以仅在 变压器电路(21)。 功能可以将次级侧电流定义为与初级侧电压的积分成比例的第一信号与初级侧电感和与初级侧电流成比例的第二信号成比例的差异,该差异乘以变压器比。 初级侧电感可以是在一次侧测量的电感,并且变压器比可以是变压器电路(21)的电压比,两者都用于变压器电路(21)的开路次级侧。
    • 4. 发明申请
    • FEEDBACK CIRCUIT FOR ZERO-VOLTAGE-SWITCHING CONVERTER
    • 用于零电压开关转换器的反馈电路
    • WO2011055285A2
    • 2011-05-12
    • PCT/IB2010054911
    • 2010-10-29
    • KONINKL PHILIPS ELECTRONICS NVPHILIPS INTELLECTUAL PROPERTYELFERICH REINHOLD
    • ELFERICH REINHOLD
    • H02M3/337
    • H02M3/3376H02M3/338Y02B70/1433
    • A feedback circuit for a zero-voltage-switching converter (1) for feeding a load circuit (2, 3), which converter (1) comprises a chopper (4), a driver (5) and a resonant tank (6), is provided with an arrangement (10) for receiving a first signal derived from a resonant tank signal and a second signal derived from a load circuit signal and for generating in response thereto a control signal for the driver (5). Such converters (1) can stand feeding voltage fluctuations and load variations relatively well. The arrangement (10) may comprise an error circuit (12) for, in response to the second signal and a reference signal, generating an error signal, and a combiner circuit (13) for, in response to the first signal and the error signal, generating the control signal. The same converter (1) may be used for supplying two or more load circuits (2, 3), in which case an error circuit (15) may generate an error signal and a duty cycle signal or two error signals.
    • 一种用于馈送负载电路(2,3)的零电压开关转换器(1)的反馈电路,该转换器(1)包括斩波器(4),驱动器(5)和谐振槽(6) 设置有用于接收从谐振槽信号导出的第一信号和从负载电路信号导出的第二信号并且响应于此产生用于驱动器(5)的控制信号的装置(10)。 这种转换器(1)可以相对较好地承受供电电压波动和负载变化。 布置(10)可以包括用于响应于第二信号和参考信号产生误差信号的响应于第一信号和误差信号的组合器电路(13)的误差电路(12) ,产生控制信号。 相同的转换器(1)可以用于提供两个或更多个负载电路(2,3),在这种情况下,误差电路(15)可以产生误差信号和占空比信号或两个误差信号。