公开(公告)号：US09059638B2

公开(公告)日：2015-06-16

申请号：US13833475

申请日：2013-03-15

Applicant: Leadtrend Technology Corporation

Inventor： Yi-Lun Shen ,  Yu-Yun Huang

IPC: H02M3/156 ,  H02M3/335 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/33515 ,  H02M1/08 ,  H02M3/33507 ,  H02M2001/0003 ,  H02M2001/0009

Abstract: Embodiments disclose control methods and control apparatuses for a switched mode power supply. The switched mode power supply comprises a current-controllable device. A driving current is provided to turn ON the current-controllable device. A conduction current passing through the current-controllable device is detected. The driving current is controlled according to the conduction current. The higher the conduction current the higher the driving current.

Abstract translation: 实施例公开了用于开关模式电源的控制方法和控制装置。 开关模式电源包括电流可控设备。 提供驱动电流以接通电流可控设备。 检测通过电流可控设备的传导电流。 驱动电流根据导通电流进行控制。 传导电流越高驱动电流越高。

公开(公告)号：US08779743B2

公开(公告)日：2014-07-15

申请号：US13549799

申请日：2012-07-16

Applicant: Yi-Lun Shen

Inventor： Yi-Lun Shen

IPC: H02M3/156

CPC classification number: H02M3/33523 ,  H02M1/32

Abstract: Disclosed include a control circuit adapted for a power controller powered by an operation voltage. When the operation voltage exceeds an over-voltage reference, the power controller stops power conversion provided by a power converter. The control circuit comprises a slope detector detecting a variation slope of the operation voltage. When the variation slope exceeds a drop rate, the slope detector recovers the power conversion. When the power conversion is recovered the power controller compares the operation voltage with the over-voltage reference.

Abstract translation: 公开了一种适用于由操作电压供电的功率控制器的控制电路。 当工作电压超过过电压参考值时，功率控制器停止由电源转换器提供的电源转换。 控制电路包括检测操作电压的变化斜率的斜率检测器。 当变化斜率超过下降率时，斜率检测器恢复功率转换。 当电源转换恢复时，功率控制器将工作电压与过电压基准进行比较。

公开(公告)号：US20140009977A1

公开(公告)日：2014-01-09

申请号：US13833699

申请日：2013-03-15

Applicant: LEADTREND TECHNOLOGY CORPORATION

Inventor： Yu-Yun Huang ,  Yi-Lun Shen

IPC: H02M3/335

CPC classification number: H02M3/33507

Abstract: Discloses are a constant current control unit and a control method, apt to a switched mode power supply with primary side control. The switched mode power supply comprises a power switch and an inductive device. A reflective voltage of the inductive device is detected to generate a feedback voltage signal. By delaying the feedback voltage signal, a delayed signal is generated. According to the feedback voltage and the delayed signal determining, a discharge time of the inductive device is determined when the power switch is OFF. According to the discharge time and a current-sense signal, a maximum average output current of the switched mode power supply is stabilized. The current-sense signal represents a current flowing through the inductive device.

Abstract translation: 公开了一种具有初级侧控制的开关式电源的恒流控制单元和控制方法。 开关模式电源包括电源开关和感应装置。 检测感应装置的反射电压以产生反馈电压信号。 通过延迟反馈电压​​信号，产生延迟的信号。 根据反馈电压和延迟信号确定，当电源开关断开时，确定感应装置的放电时间。 根据放电时间和电流检测信号，开关模式电源的最大平均输出电流稳定。 电流检测信号表示流过电感器件的电流。

公开(公告)号：US20100046261A1

公开(公告)日：2010-02-25

申请号：US12500813

申请日：2009-07-10

Applicant: Tsung-Hsiu Wu

Inventor： Tsung-Hsiu Wu

IPC: H02M7/06

CPC classification number: H02M1/4225 ,  H02M1/083 ,  Y02B70/126

Abstract: An apparatus and a method for detecting zero-voltage region detection are provided. The apparatus for zero-voltage region detection is configured to detect whether an input voltage approaches a zero voltage through an auxiliary winding, and to detect whether a primary winding almost completely releases the stored energy through the auxiliary winding.

Abstract translation: 提供一种用于检测零电压区域检测的装置和方法。 用于零电压区域检测的装置被配置为检测输入电压是否通过辅助绕组接近零电压，并且检测初级绕组是否几乎完全通过辅助绕组释放存储的能量。

公开(公告)号：US06982882B2

公开(公告)日：2006-01-03

申请号：US10919301

申请日：2004-08-17

Applicant: Yi-Shan Chu ,  Ming-Nan Chuang ,  Yuan-Wen Chang

Inventor： Yi-Shan Chu ,  Ming-Nan Chuang ,  Yuan-Wen Chang

IPC: H02M3/335

CPC classification number: H02M3/33507

Abstract: A high voltage charging circuit includes an activation control circuit, an inactivation control circuit and a power transistor. The activation control circuit is used for controlling an ON time period of the power transistor to enable the transformer to store excited-magnetic energy; the inactivation control circuit is used for controlling an OFF time period of the power transistor to make the transformer to release the excited-magnetic energy and use the excited-magnetic energy to charge the high voltage capacitor. Since the user can select a smaller Lp to keep constant the maximum value IP,max for the primary side current IP, the period tON can be made smaller as well, which means that a transformer 14 with a smaller volume can be utilized to reduce the entire size of the high voltage charging circuit.

Abstract translation: 高压充电电路包括启动控制电路，失活控制电路和功率晶体管。 激活控制电路用于控制功率晶体管的接通时间段，以使变压器能够存储激发磁能; 失活控制电路用于控制功率晶体管的OFF时间周期，以使变压器释放激发磁能，并使用激发磁能对高压电容器充电。 由于用户可以选择较小的Lp来保持初级侧电流I P P的最大值I SUB，最大值，所以周期t ON ON >也可以变得更小，这意味着可以利用具有较小体积的变压器14来减小高压充电电路的整体尺寸。