公开(公告)号：US07106008B2

公开(公告)日：2006-09-12

申请号：US10930996

申请日：2004-08-31

Applicant: Yu-Shan Chu ,  Ming-Nan Chuang

Inventor： Yu-Shan Chu ,  Ming-Nan Chuang

IPC: H05B41/14

CPC classification number: H05B41/325 ,  G03B7/16 ,  G03B15/05 ,  G03B2215/0503 ,  H04N5/2354

Abstract: A flashlight control circuit is provided to control the flash according to an exposure voltage and a predetermined voltage. Either a first comparator, second comparator and logic gate or a comparator, a first inverter, a first transistor, a first logic gate and a second logic gate may be included in the control circuit. The provided circuit enables the capacitor to discharge promptly when the trigger signal stops. Therefore, an additional control signal for discharge is not necessary. Furthermore, the circuit has a clamping circuit to clamp the exposure voltage at a lower level than the predetermined voltage according to a full flash signal.

Abstract translation: 提供手电筒控制电路以根据曝光电压和预定电压来控制闪光。 控制电路中可以包括第一比较器，第二比较器和逻辑门或比较器，第一反相器，第一晶体管，第一逻辑门和第二逻辑门。 当触发信号停止时，所提供的电路使电容器能够及时放电。 因此，不需要用于放电的附加控制信号。 此外，电路具有钳位电路，以根据全闪光信号将曝光电压钳位在比预定电压低的水平。

公开(公告)号：US06621678B2

公开(公告)日：2003-09-16

申请号：US10038592

申请日：2002-01-03

Applicant: Dah-Jiun Wei ,  Ming-Nan Chuang

Inventor： Dah-Jiun Wei ,  Ming-Nan Chuang

IPC: H02H500

CPC classification number: H03K17/082 ,  H02H5/044 ,  H03K2017/0806

Abstract: A thermal protection circuit arranged in an integrated circuit for protecting a power delivery is disclosed. The thermal protection circuit for protecting a power delivery circuit includes a first thermal sensing circuit exhibiting a negative temperature coefficient characteristic for sensing a temperature of the power delivery circuit and providing a first voltage, a second thermal sensing circuit exhibiting a positive temperature coefficient characteristic for transforming the temperature of the power delivery circuit to a second voltage, an amplifier electrically connected to the first voltage and the second voltage for providing a control signal, wherein the amplifier is a function of a voltage difference between the first voltage and the second voltage, and a switch electrically connected to an output of the amplifier for limiting a maximum current passing there through in response to the control signal.

公开(公告)号：US07772824B2

公开(公告)日：2010-08-10

申请号：US12573885

申请日：2009-10-06

Applicant: Yuan-Wen Chang ,  Yu-Bin Wang ,  Ming-Nan Chuang ,  Yu-Chuan Liu

Inventor： Yuan-Wen Chang ,  Yu-Bin Wang ,  Ming-Nan Chuang ,  Yu-Chuan Liu

IPC: H02H7/122 ,  H02M3/335

CPC classification number: H02M3/33507 ,  H02M2001/0038

Abstract: A control method for adjusting leading edge blanking time in a power converting system is disclosed. The control method includes: receiving a feedback signal relative to a load connected to an output terminal of the power converting system; determining the leading edge blanking time to be a first value if the feedback signal has a magnitude about a first voltage; and determining the leading edge blanking time to be a second value if the feedback signal has a magnitude about a second voltage, wherein the first value is smaller than the second value, and the first voltage is greater than the second voltage.

Abstract translation: 公开了一种用于调整功率转换系统中的前沿消隐时间的控制方法。 控制方法包括：接收相对于连接到电力转换系统的输出端的负载的反馈信号; 如果所述反馈信号具有大约第一电压的量值，则将所述前沿消隐时间确定为第一值; 以及如果所述反馈信号具有大约第二电压的大小，则将所述前沿消隐时间确定为第二值，其中所述第一值小于所述第二值，并且所述第一电压大于所述第二电压。

公开(公告)号：US20100026268A1

公开(公告)日：2010-02-04

申请号：US12573885

申请日：2009-10-06

Applicant: Yuan-Wen Chang ,  Yu-Bin Wang ,  Ming-Nan Chuang ,  Yu-Chuan Liu

Inventor： Yuan-Wen Chang ,  Yu-Bin Wang ,  Ming-Nan Chuang ,  Yu-Chuan Liu

IPC: G05F1/10

CPC classification number: H02M3/33507 ,  H02M2001/0038

Abstract: A control method for adjusting leading edge blanking time in a power converting system is disclosed. The control method includes: receiving a feedback signal relative to a load connected to an output terminal of the power converting system; determining the leading edge blanking time to be a first value if the feedback signal has a magnitude about a first voltage; and determining the leading edge blanking time to be a second value if the feedback signal has a magnitude about a second voltage, wherein the first value is smaller than the second value, and the first voltage is greater than the second voltage.

Abstract translation: 公开了一种用于调整功率转换系统中的前沿消隐时间的控制方法。 控制方法包括：接收相对于连接到电力转换系统的输出端的负载的反馈信号; 如果所述反馈信号具有大约第一电压的量值，则将所述前沿消隐时间确定为第一值; 以及如果所述反馈信号具有大约第二电压的大小，则将所述前沿消隐时间确定为第二值，其中所述第一值小于所述第二值，并且所述第一电压大于所述第二电压。

公开(公告)号：US08471536B2

公开(公告)日：2013-06-25

申请号：US12910863

申请日：2010-10-24

Applicant: Tsung-Hsiu Wu ,  Wen-Chung Yeh ,  Ming-Nan Chuang

Inventor： Tsung-Hsiu Wu ,  Wen-Chung Yeh ,  Ming-Nan Chuang

IPC: G05F1/613

CPC classification number: H02M1/4225 ,  Y02B70/126

Abstract: A switch controller for switching power supply is coupled to an auxiliary winding of the switching power supply through a detecting resistor. The switch controller provides a detecting current passing through the detecting resistor for keeping the voltage level of a detecting signal transmitted by the detecting resistor higher than a predetermined voltage. In this way, the switch controller can avoid the latch-up phenomenon caused by receiving the detecting signal of the negative voltage level. In addition, the switch controller can detect the magnitude of an input voltage of the switching power supply by means of the detecting current, and accordingly control the operation of the switching power supply.

Abstract translation: 用于开关电源的开关控制器通过检测电阻器耦合到开关电源的辅助绕组。 开关控制器提供通过检测电阻器的检测电流，以保持检测电阻器发送的检测信号的电压电平高于预定电压。 以这种方式，开关控制器可以避免由接收负电压电平的检测信号引起的闩锁现象。 此外，开关控制器可以通过检测电流来检测开关电源的输入电压的大小，从而控制开关电源的工作。

公开(公告)号：US20100142231A1

公开(公告)日：2010-06-10

申请号：US12578601

申请日：2009-10-14

Applicant: Ming-Nan Chuang ,  Yu-Bin Wang

Inventor： Ming-Nan Chuang ,  Yu-Bin Wang

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M2001/0048 ,  Y02B70/1491

Abstract: Integrated circuits for controlling power supplies and relevant control methods are disclosed. A controller generates a control signal to control a power switch. A feedback pin of an integrated circuit receives an external feedback signal representing an output voltage signal of a power supply. Controlled by the control signal, a transferring circuit transfers the feedback signal to the controller when the power switch is off. When the power switch is on, a clamping circuit clamps the voltage of the feedback signal at a predetermined value to avoid the controller from being influenced by the feedback signal.

Abstract translation: 公开了用于控制电源的集成电路和相关控制方法。 控制器产生控制信号以控制电源开关。 集成电路的反馈引脚接收表示电源的输出电压信号的外部反馈信号。 由控制信号控制，当电源开关关闭时，传送电路将反馈信号传送到控制器。 当电源开关接通时，钳位电路将反馈信号的电压钳位在预定值，以避免控制器受到反馈信号的影响。