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公开(公告)号：US08258822B2
公开(公告)日：2012-09-04
申请号：US13073760
申请日：2011-03-28
IPC分类号： H03K3/00
CPC分类号： H03K17/04123 , H03K17/163
摘要： An apparatus and a method switch a load through a power transistor. The apparatus includes: a first current generator for generating a current to charge a capacitance of a control terminal of the power transistor during power on of the power transistor; a second current generator for generating a current to discharge the capacitance during power off of the power transistor. The apparatus is equipped with control circuitry having a storage element for storing a voltage value representative of the potential difference between the control terminal and a conduction terminal of the power transistor when the power transistor operates in the saturation region and a discharge circuit for generating an additional current to discharge the capacitance during the power-off process. The additional current is a function of the potential difference of the control terminal and the stored voltage value from the conduction terminal.
摘要翻译： 一种通过功率晶体管切换负载的装置和方法。 该装置包括：第一电流发生器，用于在功率晶体管的通电期间产生用于对功率晶体管的控制端子的电容进行充电的电流; 第二电流发生器，用于在功率晶体管断电期间产生用于放电电容的电流。 该装置配备有控制电路，该控制电路具有存储元件，用于在功率晶体管在饱和区域中工作时存储代表功率晶体管的控制端和导通端之间的电位差的电压值，以及放电电路，用于产生额外的 在断电过程中放电电容的电流。 附加电流是控制端子的电位差和来自导通端子的存储电压值的函数。
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公开(公告)号：US20100141326A1
公开(公告)日：2010-06-10
申请号：US12328540
申请日：2008-12-04
IPC分类号： H03K17/042
CPC分类号： H03K17/04123 , H03K17/163
摘要： An apparatus and a method switch a load through a power transistor. The apparatus includes: a first current generator for generating a current to charge a capacitance of a control terminal of the power transistor during power on of the power transistor; a second current generator for generating a current to discharge the capacitance during power off of the power transistor. The apparatus is equipped with control circuitry having a storage element for storing a voltage value representative of the potential difference between the control terminal and a conduction terminal of the power transistor when the power transistor operates in the saturation region and a discharge circuit for generating an additional current to discharge the capacitance during the power-off process. The additional current is a function of the potential difference of the control terminal and the stored voltage value from the conduction terminal.
摘要翻译： 一种通过功率晶体管切换负载的装置和方法。 该装置包括：第一电流发生器，用于在功率晶体管的通电期间产生用于对功率晶体管的控制端子的电容进行充电的电流; 第二电流发生器，用于在功率晶体管断电期间产生用于放电电容的电流。 该装置配备有控制电路，该控制电路具有存储元件，用于在功率晶体管在饱和区域中工作时存储代表功率晶体管的控制端和导通端之间的电位差的电压值，以及放电电路，用于产生额外的 在断电过程中放电电容的电流。 附加电流是控制端子的电位差和来自导通端子的存储电压值的函数。
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公开(公告)号：US08248826B2
公开(公告)日：2012-08-21
申请号：US13069724
申请日：2011-03-23
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0009
摘要： An embodiment of a power-supply controller comprises a switching-control circuit, an error amplifier, and a signal generator. The switching-control circuit is operable to control a switch coupled to a primary winding of a transformer, and the error amplifier has a first input node operable to receive a feedback signal, a second input node operable to receive a comparison signal, and an output node operable to provide a control signal to the switching-control circuit. The signal generator is operable to generate either the feedback signal or the comparison signal in response to a compensation signal that is isolated from a secondary winding of the transformer and that is proportional to a load current through a conductor disposed between the secondary winding and a load.
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公开(公告)号：US20110175650A1
公开(公告)日：2011-07-21
申请号：US13073760
申请日：2011-03-28
IPC分类号： H03K3/01
CPC分类号： H03K17/04123 , H03K17/163
摘要： An apparatus and a method switch a load through a power transistor. The apparatus includes: a first current generator for generating a current to charge a capacitance of a control terminal of the power transistor during power on of the power transistor; a second current generator for generating a current to discharge the capacitance during power off of the power transistor. The apparatus is equipped with control circuitry having a storage element for storing a voltage value representative of the potential difference between the control terminal and a conduction terminal of the power transistor when the power transistor operates in the saturation region and a discharge circuit for generating an additional current to discharge the capacitance during the power-off process. The additional current is a function of the potential difference of the control terminal and the stored voltage value from the conduction terminal.
摘要翻译： 一种通过功率晶体管切换负载的装置和方法。 该装置包括：第一电流发生器，用于在功率晶体管的通电期间产生用于对功率晶体管的控制端子的电容进行充电的电流; 第二电流发生器，用于在功率晶体管断电期间产生用于放电电容的电流。 该装置配备有控制电路，该控制电路具有存储元件，用于在功率晶体管在饱和区域中工作时存储代表功率晶体管的控制端和导通端之间的电位差的电压值，以及放电电路，用于产生额外的 在断电过程中放电电容的电流。 附加电流是控制端子的电位差和来自导通端子的存储电压值的函数。
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公开(公告)号：US07936189B2
公开(公告)日：2011-05-03
申请号：US12328540
申请日：2008-12-04
IPC分类号： H03K3/00
CPC分类号： H03K17/04123 , H03K17/163
摘要： An apparatus and a method switch a load through a power transistor. The apparatus includes: a first current generator for generating a current to charge a capacitance of a control terminal of the power transistor during power on of the power transistor; a second current generator for generating a current to discharge the capacitance during power off of the power transistor. The apparatus is equipped with control circuitry having a storage element for storing a voltage value representative of the potential difference between the control terminal and a conduction terminal of the power transistor when the power transistor operates in the saturation region and a discharge circuit for generating an additional current to discharge the capacitance during the power-off process. The additional current is a function of the potential difference of the control terminal and the stored voltage value from the conduction terminal.
摘要翻译： 一种通过功率晶体管切换负载的装置和方法。 该装置包括：第一电流发生器，用于在功率晶体管的通电期间产生用于对功率晶体管的控制端子的电容进行充电的电流; 第二电流发生器，用于在功率晶体管断电期间产生用于放电电容的电流。 该装置配备有控制电路，该控制电路具有存储元件，用于在功率晶体管在饱和区域中工作时存储代表功率晶体管的控制端和导通端之间的电位差的电压值，以及放电电路，用于产生额外的 在断电过程中放电电容的电流。 附加电流是控制端子的电位差和来自导通端子的存储电压值的函数。
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16.发明授权Method for controlling a switching regulator and related switching regulator 有权用于控制开关稳压器和相关开关稳压器的方法公开(公告)号：US08194420B2
公开(公告)日：2012-06-05
申请号：US13069728
申请日：2011-03-23
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0009
摘要： An embodiment of a power-supply controller comprises a switching-control circuit, an error amplifier, and a signal generator. The switching-control circuit is operable to control a switch coupled to a primary winding of a transformer, and the error amplifier has a first input node operable to receive a feedback signal, a second input node operable to receive a comparison signal, and an output node operable to provide a control signal to the switching-control circuit. The signal generator is operable to generate either the feedback signal or the comparison signal in response to a compensation signal that is isolated from a secondary winding of the transformer and that is proportional to a load current through a conductor disposed between the secondary winding and a load.
摘要翻译： 电源控制器的实施例包括开关控制电路，误差放大器和信号发生器。 开关控制电路可操作以控制耦合到变压器的初级绕组的开关，并且误差放大器具有可操作以接收反馈信号的第一输入节点，可操作以接收比较信号的第二输入节点和输出端 节点，其可操作以向所述开关控制电路提供控制信号。 信号发生器可操作以响应于与变压器的次级绕组隔离的补偿信号而产生反馈信号或比较信号，并且与通过布置在次级绕组和负载之间的导体的负载电流成比例 。
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公开(公告)号：US08179699B2
公开(公告)日：2012-05-15
申请号：US12347889
申请日：2008-12-31
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0009
摘要： An embodiment of a power-supply controller comprises a switching-control circuit, an error amplifier, and a signal generator. The switching-control circuit is operable to control a switch coupled to a primary winding of a transformer, and the error amplifier has a first input node operable to receive a feedback signal, a second input node operable to receive a comparison signal, and an output node operable to provide a control signal to the switching-control circuit. The signal generator is operable to generate either the feedback signal or the comparison signal in response to a compensation signal that is isolated from a secondary winding of the transformer and that is proportional to a load current through a conductor disposed between the secondary winding and a load.
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公开(公告)号：US20090140712A1
公开(公告)日：2009-06-04
申请号：US12324548
申请日：2008-11-26
IPC分类号： G05F1/00
CPC分类号： H02M3/33507 , H02M1/36 , H02M2001/0006
摘要： An embodiment of a self-supply circuit, for a voltage converter that converts an input voltage into an output voltage and has a main switch and a controller, designed to control switching of the main switch for controlling the output voltage; the self-supply circuit is provided with: a charge accumulator, which is connected to the controller and supplies a self-supply voltage to the same controller; a generator, which supplies a charge current to the charge accumulator; and an auxiliary switch, which has a first conduction terminal in common with a respective conduction terminal of the main switch and is operable so as to control transfer of the charge current to the charge accumulator. In particular, the self-supply circuit is provided with a precharge stage, connected to the auxiliary switch, which carries out a precharging of an intrinsic capacitance of the auxiliary switch before a turning-off transient of the main switch ends.
摘要翻译： 用于将输入电压转换为输出电压并具有主开关和控制器的电压转换器的实施例，其被设计成控制用于控制输出电压的主开关的开关; 自供电电路设有：充电蓄电池，连接到控制器并向同一控制器提供自供电电压; 发电机，其向充电蓄电池提供充电电流; 以及辅助开关，其具有与主开关的相应导通端子共同的第一导通端子，并且可操作以控制充电电流到电荷累加器的传送。 特别地，自供电电路具有连接到辅助开关的预充电级，该辅助开关在主开关的断开瞬变结束之前执行辅助开关的本征电容的预充电。
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公开(公告)号：US08325502B2
公开(公告)日：2012-12-04
申请号：US12324548
申请日：2008-11-26
CPC分类号： H02M3/33507 , H02M1/36 , H02M2001/0006
摘要： An embodiment of a self-supply circuit, for a voltage converter that converts an input voltage into an output voltage and has a main switch and a controller, designed to control switching of the main switch for controlling the output voltage; the self-supply circuit is provided with: a charge accumulator, which is connected to the controller and supplies a self-supply voltage to the same controller; a generator, which supplies a charge current to the charge accumulator; and an auxiliary switch, which has a first conduction terminal in common with a respective conduction terminal of the main switch and is operable so as to control transfer of the charge current to the charge accumulator. In particular, the self-supply circuit is provided with a precharge stage, connected to the auxiliary switch, which carries out a precharging of an intrinsic capacitance of the auxiliary switch before a turning-off transient of the main switch ends.
摘要翻译： 用于将输入电压转换为输出电压并具有主开关和控制器的电压转换器的实施例，其被设计成控制用于控制输出电压的主开关的开关; 自供电电路设有：充电蓄电池，连接到控制器并向同一控制器提供自供电电压; 发电机，其向充电蓄电池提供充电电流; 以及辅助开关，其具有与主开关的相应导通端子共同的第一导通端子，并且可操作以控制充电电流到电荷累加器的传送。 特别地，自供电电路具有连接到辅助开关的预充电级，该辅助开关在主开关的断开瞬变结束之前执行辅助开关的本征电容的预充电。
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公开(公告)号：US20070126409A1
公开(公告)日：2007-06-07
申请号：US11634655
申请日：2006-12-04
IPC分类号： G05F1/00
CPC分类号： H02M1/38 , H02M3/3376
摘要： A device and method for driving a converter circuit that supplies a charge via a first electronic switch and a second electronic switch alternately turned on and off. A generator module generates a memory signal, indicating the duration of a first dead-time interval. A delay module, sensitive to the memory signal controls turning-on of the first electronic switch with a delay, with respect to turning-off of the second electronic switch, so that a second dead-time interval has a duration substantially equal to the duration of the first dead-time interval.
摘要翻译： 用于驱动经由第一电子开关和第二电子开关提供电荷的转换器电路的装置和方法交替地导通和关断。 发生器模块产生指示第一死区间隔的持续时间的存储器信号。 相对于第二电子开关的断开，对存储器信号敏感的延迟模块控制第一电子开关的导通，延迟，使得第二死区间隔的持续时间基本上等于持续时间 的第一个死时间间隔。
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