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    • 32. 发明申请
    • DC-DC CONVERTER CIRCUIT FOR HIGH INPUT-TO-OUTPUT VOLTAGE CONVERSION
    • 用于高输入输出电压转换的DC-DC转换器电路
    • WO2011100827A1
    • 2011-08-25
    • PCT/CA2011/000185
    • 2011-02-18
    • LEHN, Peter Waldemar
    • LEHN, Peter Waldemar
    • H02M3/24H02M3/305H02M3/335
    • H02M3/337H02M3/155H02M3/335H02M2001/0058Y02B70/1433Y02B70/1491
    • The present invention provides a series of DC-DC converter circuit designs, and DC-DC converters based on such circuit design, that provide high input-to-output voltage conversion. The converters include a resonant tank and a means for interrupting the tank current to produce a near zero-loss "hold" state wherein zero current and/or zero voltage switching is provided, while providing control over the amount of power transfer. A resonant DC-DC converter for high voltage step-up ratio in accordance with the circuit design includes: (a) a low voltage DC- AC converter, (b) a resonant tank, (c) a high voltage AC-DC converter, (d) a (i) common ground on an input and an output without use of a transformer and/or (ii) a single high voltage controllable switch within the resonant tank.
    • 本发明提供了一系列DC-DC转换器电路设计,以及基于这样的电路设计的DC-DC转换器,其提供高输入到输出电压转换。 这些转换器包括一个谐振回路和一个用于中断储罐电流以产生零损耗“保持”状态的装置,其中提供零电流和/或零电压切换,同时提供对功率传送量的控制。 根据电路设计的用于高电压升压比的谐振DC-DC转换器包括:(a)低压DC-AC转换器,(b)谐振槽,(c)高压AC-DC转换器, (d)a(i)不使用变压器的输入和输出上的公共地和/或(ii)谐振箱内的单个高压可控开关。
    • 33. 发明申请
    • MONITORING AND CONTROL OF POWER CONVERTERS
    • 电力转换器的监控与控制
    • WO2009152468A3
    • 2010-04-01
    • PCT/US2009047261
    • 2009-06-12
    • UNIV COLORADO REGENTSMORRONI JEFFREYMAKSIMOVIC DRAGANZANE REGAN
    • MORRONI JEFFREYMAKSIMOVIC DRAGANZANE REGAN
    • H02M3/24
    • H02M3/157
    • A digital controller configured to inject a signal into a digital feedback path that facilitates regulation of a power converter and measure the corresponding phase, gain, or frequency. The digital controller may also include an adaptive tuning controller for adjusting power converter operating attributes based in part on the measurements. In an exemplary embodiment, the adaptive tuning controller uses the phase, gain, and/or frequency measurements to adjust the digital feedback signal. In an exemplary embodiment, the adaptive tuning controller compares the operating measurements with desired values and generates adjusted operating attributes. In accordance with an exemplary embodiment, the monitoring and adjusting of the digital feedback signal occurs while the digital controller is regulating a power signal in the power converter.
    • 数字控制器,被配置为将信号注入到有助于调节功率转换器并测量相应的相位,增益或频率的数字反馈路径中。 数字控制器还可以包括用于部分地基于测量来调整功率转换器操作属性的自适应调谐控制器。 在示例性实施例中,自适应调谐控制器使用相位,增益和/或频率测量来调整数字反馈信号。 在示例性实施例中,自适应调谐控制器将操作测量值与期望值进行比较并产生经调整的操作属性。 根据示例性实施例,当数字控制器调节功率转换器中的功率信号时,数字反馈信号的监视和调整发生。
    • 34. 发明申请
    • POWER CONVERTER
    • 电源转换器
    • WO2005077041A3
    • 2009-04-09
    • PCT/US2005004033
    • 2005-02-09
    • O2MICRO INCLIPCSEI LASZLOPOPOVICI CATALIN
    • LIPCSEI LASZLOPOPOVICI CATALIN
    • H02M3/335H02M3/24H02M7/5387
    • H02M3/33592H02M1/40H02M3/3376Y02B70/1475
    • A power converter (102c) may include a transformer (202) having a primary winding (206) and a secondary winding (208). A first high side switch (HDR1) and a first low side switch (LDR1) may be coupled in series along a first path (170) of a full bridge circuit, having a first node (LXl) between the first high side switch (HDR1) and the first low side switch (LDR1). The power converter (102c) may also comprise a second high side switch (HDR2) and a second low side switch (LDR2) coupled in series along a second path (172) of the full bridge circuit, having a second node (LX2) between the second high side switch (HDR2) and the second low side switch (LDR2). The power converter (102c) may further comprise a first path (602) capable of providing a first rectifier drive signal from the first node (LX1) to a second rectifier switch (56), and a second path (604) capable of providing a second rectifier drive signal from the second node (LX2) to a first rectifier switch (55).
    • 功率转换器(102c)可以包括具有初级绕组(206)和次级绕组(208)的变压器(202)。 第一高侧开关(HDR1)和第一低侧开关(LDR1)可以沿着全桥电路的第一路径(170)串联耦合,其具有第一高侧开关(HDR1)之间的第一节点(LX1) )和第一低侧开关(LDR1)。 功率转换器(102c)还可以包括沿全桥电路的第二路径(172)串联耦合的第二高侧开关(HDR2)和第二低侧开关(LDR2),其具有位于全桥电路的第二路径(172)之间的第二节点 第二高侧开关(HDR2)和第二低侧开关(LDR2)。 功率转换器(102c)还可以包括能够提供从第一节点(LX1)到第二整流器开关(56)的第一整流器驱动信号的第一路径(602),以及能够提供 从第二节点(LX2)到第一整流器开关(55)的第二整流器驱动信号。
    • 35. 发明申请
    • 圧電トランスの駆動回路
    • 压电变压器驱动电路
    • WO2008056435A1
    • 2008-05-15
    • PCT/JP2007/001157
    • 2007-10-24
    • 株式会社タムラ製作所林雄二水谷彰
    • 林雄二水谷彰
    • H02M7/48H02M3/24H02M7/5387H05B41/24
    • H05B41/2827H01L41/044H02M7/537H02M2007/4815Y02B70/1441
    •  圧電トランスを駆動するフルブリッジ回路のスイッチング損失を低減した圧電トランスの駆動回路を提供する。  4個のFET(電界効果トランジスタ)Q1~Q4によって構成されたフルブリッジ回路1と、そのドライブ回路2、フルブリッジ回路1から出力された矩形波を正弦波に変換するフィルタ回路3及びこのフィルタ回路3に接続された1個あるいは複数個の圧電トランス4を備える。各圧電トランス4の2次端子にバックライトとなる冷陰極管5を接続する。フィルタ回路3には、フルブリッジ負荷の電流位相調整用のインダクタンスL1を、フルブリッジ1の出力または圧電トランス4と並列に接続する。フルブリッジ回路1の負荷インピーダンスは誘導性となって、フルブリッジ回路1の出力電流位相は「遅れ位相」となるため、貫通電流が流れることがない。
    • 提供一种能够降低驱动压电变压器的全桥电路的开关损耗的压电变压器驱动电路。 驱动电路包括:通过FFT(场效应晶体管)形成的全桥电路(1)(Q1〜Q4); 用于全桥电路的驱动电路(2); 用于将从全桥电路(1)输出的矩形波变换为正弦波的滤波电路(3) 以及连接到所述滤波器电路(3)的一个或多个压电变压器(4)。 每个压电变压器(4)具有连接到用作背光的冷阴极管(5)的次级端子。 滤波器电路(3)连接到电感(L1),用于与全桥(1)或压电变压器(4)的输出并联地调整全桥负载的电流相位。 由于全桥电路(1)的负载阻抗变为电感,并且全桥电路(1)的输出电流相位变为“延迟相”,因此不会产生穿透电流。
    • 36. 发明申请
    • INVERTER WITH IMPROVED OVERCURRENT PROTECTION CIRCUIT, AND POWER SUPPLY AND ELECTRONIC BALLAST THEREFOR
    • 具有改进的过流保护电路的逆变器,以及电源和电子镇流器
    • WO2008042070A2
    • 2008-04-10
    • PCT/US2007/019368
    • 2007-09-05
    • OSRAM SYLVANIA INC.MEHTA, Bhadresh
    • MEHTA, Bhadresh
    • H02M3/24
    • H02M7/53803H02M1/32H02M2001/0009H05B41/2856Y10S323/901Y10S323/908
    • An inverter (100) comprises first and second input terminals (102,104), an inverter output terminal (106), a series arrangement of a first inverter transistor (110) and a second inverter transistor (120), a driver circuit (130), a primary current sensing circuit (150,154,156), and an auxiliary current sensing circuit (160). Primary current sensing circuit (150,154,156) is coupled between second inverter transistor (120) and a current-sense input (132) of driver circuit (130). Auxiliary current sensing circuit (160) is coupled between second inverter transistor (120) and a frequency control input (134) of driver circuit (130). During operation, if the current flow through inverter transistors (110,120) exceeds a predetermined peak limit, auxiliary current sensing circuit (160) provides an auxiliary signal to frequency control input (134) of driver circuit (130), thereby increasing a drive frequency at which driver circuit (130) commutates inverter transistors (110,120). The increase in the drive frequency reduces the peak current flow through inverter transistors (110,120), thereby protecting inverter transistors (110,120) from excessive power dissipation and potentially destructive heating.
    • 逆变器(100)包括第一和第二输入端子(102,104),逆变器输出端子(106),第一逆变器晶体管(110)和第二逆变器晶体管(120)的串联结构, ,驱动器电路(130),主电流感测电路(150,154,156)和辅助电流感测电路(160)。 初级电流感测电路(150,154,156)耦合在第二反相器晶体管(120)与驱动器电路(130)的电流感测输入(132)之间。 辅助电流感测电路(160)耦合在第二反相器晶体管(120)和驱动器电路(130)的频率控制输入(134)之间。 在操作期间,如果流过反相器晶体管(110,120)的电流超过预定的峰值限制,则辅助电流感测电路(160)向驱动器电路(130)的频率控制输入(134)提供辅助信号, 该驱动器电路(130)使逆变器晶体管(110,120)换向。 驱动频率的增加减少流过反相器晶体管(110,120)的峰值电流,从而保护反相器晶体管(110,120)免受过度的功率耗散和潜在的破坏性加热。
    • 37. 发明申请
    • METHOD AND APPARATUS FOR ADJUSTING CURRENT AMONGST PHASES OF A MULTI-PHASE CONVERTER
    • 调整多相转换器电流相位的方法和装置
    • WO2006023522A1
    • 2006-03-02
    • PCT/US2005/029194
    • 2005-08-16
    • INTERNATIONAL RECTIFIER CORPORATIONCLAVETTE, Dan
    • CLAVETTE, Dan
    • H02M3/24
    • H02M3/1584
    • A multiple-phase DC-DC converter has a first series circuit comprising first and second output transistors coupled across an input voltage, a first phase voltage being provided at a first common connection between the first and second transistors, at least one second series circuit comprising third and fourth output transistors coupled in series across the input voltage, a second phase voltage being provided at a second common connection between the third and fourth transistors, a first output inductor for the first phase, at least one second output inductor for the at least one second phase, an output capacitor, a first pulse width modulator circuit comprising a first pulse width modulator comparator and a first fixed slope ramp generator, the first fixed slope ramp generator supplying a fixed slope ramp signal to one input of the first comparator, at least one second pulse width modulator circuit comprising a second pulse width modulator comparator and a variable slope ramp generator, the variable slope ramp generator supplying a variable slope ramp signal to one input of the second comparator, an error amplifier for comparing the output voltage of the converter to a reference voltage and providing an error amplifier output voltage to respective second terminals of each of the first and at least one second pulse width modulator comparators, a first current sense amplifier for determining the phase current in a first phase of the converter provided by the first series circuit, at least one second current sense amplifier for determining the phase current in at least one second phase of the converter provided by the at least one second series circuit and at least one share adjust amplifier for receiving outputs from each of the first and second current sense amplifiers and adjusting the slope of the variable slope ramp signal to adjust the current provided by the at least one second series circuit thereby to equalize the currents provided by the first and at least one second phases.
    • 多相DC-DC转换器具有第一串联电路,该第一串联电路包括跨输入电压耦合的第一和第二输出晶体管,第一相电压被提供在第一和第二晶体管之间的第一公共连接处,至少一个第二串联电路包括 第三和第四输出晶体管串联耦合在输入电压上,第二相电压被提供在第三和第四晶体管之间的第二公共连接处,第一相的第一输出电感器,至少一个第二输出电感器 一个第二相位,一个输出电容器,一个第一脉冲宽度调制器电路,包括一个第一脉冲宽度调制器比较器和一个第一固定斜坡斜坡发生器,该第一固定斜坡斜坡发生器向第一比较器的一个输入端提供一个固定的斜坡斜坡信号, 至少一个第二脉冲宽度调制器电路,包括第二脉冲宽度调制器比较器和可变斜坡斜坡发生器 ,所述可变斜坡斜坡发生器向所述第二比较器的一个输入端提供可变斜坡斜坡信号,误差放大器,用于将所述转换器的输出电压与参考电压进行比较,并且将误差放大器输出电压提供给每个的每个的相应的第二端子 第一和至少一个第二脉冲宽度调制器比较器,用于确定由第一串联电路提供的转换器的第一相位中的相电流的第一电流检测放大器,用于至少确定相电流的至少一个第二电流检测放大器 由所述至少一个第二串联电路提供的所述转换器的第二相位和至少一个共享调整放大器,用于接收来自所述第一和第二电流检测放大器中的每一个的输出,并且调整所述可变斜坡斜坡信号的斜率以调整所提供的电流 通过所述至少一个第二串联电路,由此来均衡由所述第一和至少一个所提供的电流 第二阶段。