公开(公告)号：US09099932B2

公开(公告)日：2015-08-04

申请号：US13735481

申请日：2013-01-07

Applicant: Analog Devices Technology

Inventor： Yingyang Ou ,  Renjian Xie ,  Huailiang Sheng

IPC: H02M3/335 ,  H02M1/40 ,  H02M7/48

CPC classification number: H02M1/08 ,  H02M1/40 ,  H02M3/33507 ,  H02M3/33576 ,  H02M2007/4803 ,  H03K17/56

Abstract: A duty cycle balance module (DCBM) for use with a switch mode power converter. One possible half-bridge converter embodiment includes a transformer driven to conduct current in first and second directions by first and second signals during and second half-cycles, respectively. A current limiting mechanism adjusts the duty cycles of the first and second signals when a sensed current exceeds a predetermined limit threshold. The DCBM receives signals representative of the duty cycles which would be used if there were no modification by the current limiting mechanism and signals Dact—1 and Dact—2 representative of the duty cycles that are actually used for the first and second signals, and outputs signals Dbl—1 and Dbl—2 which modify signals Dact—1 and Dact—2 as needed to dynamically balance the duty cycles of the first and second signals and thereby reduce flux imbalance in the transformer that might otherwise arise.

Abstract translation: 用于开关模式功率转换器的占空比平衡模块（DCBM）。 一个可能的半桥转换器实施例包括分别被驱动以在第一和第二方向通过第一和第二信号在第一和第二半周期期间传导电流的变压器。 当感测电流超过预定极限阈值时，电流限制机构调节第一和第二信号的占空比。 DCBM接收代表占空比的信号，如果没有通过电流限制机制进行修改，并且表示实际用于第一和第二信号的占空比的Dact-1和Dact-2信号，以及输出 信号Dbl-1和Dbl-2，其根据需要修改信号Dact-1和Dact-2，以动态平衡第一和第二信号的占空比，从而减少可能出现的变压器中的通量不平衡。

公开(公告)号：US20140254206A1

公开(公告)日：2014-09-11

申请号：US13947820

申请日：2013-07-22

Applicant: ANALOG DEVICES TECHNOLOGY

Inventor： Yingyang Ou ,  Qingyi Huang ,  Renjian Xie ,  Ling Ren

IPC: H02M3/335

CPC classification number: H02M3/33592 ,  Y02B70/1475

Abstract: In certain example embodiments, a system is provided that includes a circuit. The system also includes a reverse current control module that provides an isolated power supply in order to protect one or more devices in a power chain during one or more testing activities having one or more requirements.

Abstract translation: 在某些示例性实施例中，提供了包括电路的系统。 该系统还包括反向电流控制模块，其提供隔离的电源，以便在具有一个或多个要求的一个或多个测试活动期间保护功率链中的一个或多个设备。

公开(公告)号：US09438127B2

公开(公告)日：2016-09-06

申请号：US13947820

申请日：2013-07-22

Applicant: ANALOG DEVICES TECHNOLOGY

Inventor： Yingyang Ou ,  Qingyi Huang ,  Renjian Xie ,  Ling Ren

IPC: H02M3/335

CPC classification number: H02M3/33592 ,  Y02B70/1475

Abstract: In certain example embodiments, a system is provided that includes a circuit. The system also includes a reverse current control module that provides an isolated power supply in order to protect one or more devices in a power chain during one or more testing activities having one or more requirements.

Abstract translation: 在某些示例性实施例中，提供了包括电路的系统。 该系统还包括反向电流控制模块，其提供隔离的电源，以便在具有一个或多个要求的一个或多个测试活动期间保护功率链中的一个或多个设备。

公开(公告)号：US09041372B2

公开(公告)日：2015-05-26

申请号：US13799492

申请日：2013-03-13

Applicant: Analog Devices Technology

Inventor： Renjian Xie ,  Qingyi Huang ,  Yingyang Ou

IPC: G05F1/00 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/1582 ,  H02M2001/007 ,  Y10T307/25

Abstract: A switching power converter includes a voltage source that provides an input voltage Vin to an unregulated DC/DC converter stage and at least one buck-boost converter stage to produce a desired output voltage Vout. The unregulated DC/DC converter stage is adapted to provide an isolated voltage to the at least one regulated buck-boost converter stage, wherein the unregulated DC/DC converter stage comprises a transformer having a primary winding and at least one secondary winding and at least one switching element coupled to the primary winding. The at least one buck-boost converter stage is arranged to operate in a buck mode, boost mode or buck-boost mode in response to a mode selection signal from a mode selection module. By influencing the pulse width modulation output power controller the at least one buck-boost converter stage is arranged to produce one or multiple output voltages.

Abstract translation: 开关功率转换器包括向未调节的DC / DC转换器级和至少一个降压 - 升压转换器级提供输入电压Vin以产生期望的输出电压Vout的电压源。 未调节的DC / DC转换器级适于向至少一个调节的降压 - 升压转换器级提供隔离电压，其中未调节的DC / DC转换器级包括具有初级绕组和至少一个次级绕组的变压器，并且至少 一个开关元件耦合到初级绕组。 至少一个降压 - 升压转换器级被布置成响应于来自模式选择模块的模式选择信号而以降压模式，升压模式或降压 - 升压模式操作。 通过影响脉宽调制输出功​​率控制器，至少一个降压 - 升压转换器级布置成产生一个或多个输出电压。

公开(公告)号：US20150036390A1

公开(公告)日：2015-02-05

申请号：US13955971

申请日：2013-07-31

Applicant: Analog Devices Technology

Inventor： Yingyang Ou ,  Renjian Xie ,  Qingyi Huang

IPC: H02M3/337

CPC classification number: H02M3/337 ,  H02M3/33592 ,  Y02B70/1475

Abstract: An apparatus comprises a power converter circuit and a control circuit. The power converter circuit includes a primary circuit side and a secondary circuit side. The primary circuit side includes a plurality of primary switches, and the secondary circuit side includes a plurality of synchronous rectifiers and an inductor. The control circuit is configured to operate the synchronous rectifiers synchronously with the primary switches when inductor current at the inductor is greater than or equal to a reference inductor current, and operate the synchronous rectifiers in a bidirectional mode when the inductor current is less than the reference inductor current, wherein energy is delivered from the primary side to the secondary side and from the secondary side to the primary side during the bidirectional mode.

Abstract translation: 一种装置包括功率转换器电路和控制电路。 功率转换器电路包括初级电路侧和次级电路侧。 主电路侧包括多个初级开关，次级电路侧包括多个同步整流器和电感器。 控制电路被配置为当电感器上的电感电流大于或等于参考电感器电流时与主开关同步地操作同步整流器，并且当电感器电流小于参考电压时，以双向模式操作同步整流器 电感电流，其中在双向模式期间，能量从初级侧传递到次级侧，从次级侧传递到初级侧。

公开(公告)号：US20140268890A1

公开(公告)日：2014-09-18

申请号：US13799492

申请日：2013-03-13

Applicant: Analog Devices Technology

Inventor： Renjian Xie ,  Qingyi Huang ,  Yingyang Ou

IPC: H02M3/335

CPC classification number: H02M3/1582 ,  H02M2001/007 ,  Y10T307/25

Abstract: A switching power converter includes a voltage source that provides an input voltage Vin to an unregulated DC/DC converter stage and at least one buck-boost converter stage to produce a desired output voltage Vout. The unregulated DC/DC converter stage is adapted to provide an isolated voltage to the at least one regulated buck-boost converter stage, wherein the unregulated DC/DC converter stage comprises a transformer having a primary winding and at least one secondary winding and at least one switching element coupled to the primary winding. The at least one buck-boost converter stage is arranged to operate in a buck mode, boost mode or buck-boost mode in response to a mode selection signal from a mode selection module. By influencing the pulse width modulation output power controller the at least one buck-boost converter stage is arranged to produce one or multiple output voltages.

Abstract translation: 开关功率转换器包括向未调节的DC / DC转换器级和至少一个降压 - 升压转换器级提供输入电压Vin以产生期望的输出电压Vout的电压源。 未调节的DC / DC转换器级适于向至少一个调节的降压 - 升压转换器级提供隔离电压，其中未调节的DC / DC转换器级包括具有初级绕组和至少一个次级绕组的变压器，并且至少 一个开关元件耦合到初级绕组。 至少一个降压 - 升压转换器级被布置成响应于来自模式选择模块的模式选择信号而以降压模式，升压模式或降压 - 升压模式操作。 通过影响脉宽调制输出功​​率控制器，至少一个降压 - 升压转换器级布置成产生一个或多个输出电压。