公开(公告)号：US20150318779A1

公开(公告)日：2015-11-05

申请号：US14694040

申请日：2015-04-23

Applicant: Samsung Electro-Mechanics Co., Ltd. ,  University of Seoul Industry Cooperation Foundation

Inventor： Sang Hyun CHA ,  Soo Hyun MOON ,  Hye Jin LEE ,  Joong Ho CHOI ,  Ji Hwan KIM ,  Chang Seok LEE ,  Yun Joong LEE

IPC: H02M1/36 ,  H02M3/335

CPC classification number: H02M1/36 ,  H02M3/335 ,  H02M3/33507 ,  H02M2001/0006

Abstract: Disclosed herein are a start-up circuit capable of reducing a leakage current to reduce power consumption, and a power device using the same. The start-up circuit includes: a bias unit connected between a first power source and a second power source and allowing a first current to flow from the first power source to the second power source according to a predetermined voltage; a first start unit connected to the bias unit and driving a second current to apply the predetermined voltage to the bias unit, and stopping driving the second current when a voltage received from the second power source reaches a first voltage; and a second start unit connected to the bias unit and driving a third current, the predetermined voltage being applied to the bias unit by the third current, and stopping driving the third current upon receiving a stop signal.

Abstract translation: 这里公开了能够减少泄漏电流以降低功耗的启动电路，以及使用该启动电路的功率器件。 启动电路包括：偏置单元，连接在第一电源和第二电源之间，并允许第一电流根据预定电压从第一电源流动到第二电源; 连接到所述偏置单元并驱动第二电流以将所述预定电压施加到所述偏置单元的第一启动单元，以及当从所述第二电源接收的电压达到第一电压时停止驱动所述第二电流; 以及第二起动单元，连接到所述偏置单元并驱动第三电流，所述预定电压通过所述第三电流施加到所述偏置单元，并且在接收到停止信号时停止驱动所述第三电流。

公开(公告)号：US20150173149A1

公开(公告)日：2015-06-18

申请号：US14294878

申请日：2014-06-03

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Deuk Hee PARK ,  Chan Woo PARK ,  Yun Joong LEE ,  Jong Tae HWANG ,  Je Hyeon YU ,  Soo Hyun MOON ,  Hye Jin LEE ,  Chang Seok LEE ,  Sang Hyun CHA

IPC: H05B33/08

CPC classification number: H05B33/0851 ,  H05B33/0824

Abstract: There are provided a light emitting diode (LED) driving apparatus and an LED lighting apparatus, in which a common detection resistor detecting a current flowing in each LED is used. According to exemplary embodiments of the present disclosure, manufacturing costs and a circuit area may be reduced by commonly using a common detection resistor detecting a current flowing in each of the LEDs.

Abstract translation: 提供了一种发光二极管（LED）驱动装置和LED照明装置，其中使用检测在每个LED中流动的电流的公共检测电阻器。 根据本公开的示例性实施例，可以通过共同使用检测在每个LED中流动的电流的公共检测电阻来降低制造成本和电路面积。

公开(公告)号：US20150117065A1

公开(公告)日：2015-04-30

申请号：US14288070

申请日：2014-05-27

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Sang Hyun CHA ,  Deuk Hee PARK ,  Yun Joong LEE ,  Joong Ho CHOI ,  Je Hyeon YU ,  Hyeon Seon YU ,  Chang Seok LEE

IPC: H03K17/06 ,  H02M3/335 ,  H03K17/687

CPC classification number: H03K17/063 ,  H02M3/33507 ,  H03K17/687

Abstract: A gate driving circuit may include: a bias unit receiving an input signal having preset high and low signal levels, including a first N-MOSFET turned on in the case in which the input signal has the high level and a first P-MOSFET turned on in the case in which the input signal has the low level, and supplying bias powers by the turning-on of the first N-MOSFET and the first P-MOSFET; and an amplifying unit including a second N-MOSFET turned on by receiving the bias power supplied from the first N-MOSFET in the case in which the input signal has the high level and a second P-MOSFET turned on by receiving the bias power supplied from the first P-MOSFET turned on in the case in which the input signal has the low level and providing a gate signal depending on the turning-on of the second N-MOSFET and the second P-MOSFET.

Abstract translation: 栅极驱动电路可以包括：偏置单元，其接收具有预置的高和低信号电平的输入信号，包括在输入信号具有高电平的情况下导通的第一N-MOSFET和导通的第一P-MOSFET 在输入信号为低电平的情况下，通过第一N-MOSFET和第一P-MOSFET的导通来提供偏置功率; 以及放大单元，其包括通过在输入信号具有高电平的情况下接收从第一N-MOSFET提供的偏置功率而导通的第二N-MOSFET，并且通过接收提供的偏置功率来接通第二P-MOSFET 在其中输入信号具有低电平并且根据第二N-MOSFET和第二P-MOSFET的导通而提供栅极信号的情况下，第一P-MOSFET导通。

公开(公告)号：US20150062978A1

公开(公告)日：2015-03-05

申请号：US14472741

申请日：2014-08-29

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Yun Joong LEE ,  Deuk Hee PARK ,  Chan Woo PARK ,  Jong Tae HWANG ,  Je Hyeon YU ,  Soo Hyun MOON ,  Hye Jin LEE ,  Chang Seok LEE ,  Sang Hyun CHA

IPC: H02M1/42 ,  H05B33/08 ,  H02M3/335

CPC classification number: H05B33/0815 ,  H02M1/4258 ,  H02M2001/0009 ,  H05B33/0851 ,  Y02B70/126

Abstract: Embodiments of the invention provide a method and a circuit for generating a reference signal for controlling a peak current of a converter switch. According to at least one embodiment, a dead-zone generator configured to form a dead-zone in an input voltage signal divided from a primary-side supply voltage of an isolated converter, and a duty ratio calculator configured to calculate a duty ratio of energy transfer to a secondary side. The circuit further includes an operator configured to generate and output a reference signal for controlling the peak current of the converter switch from a dead-zone voltage signal having the dead-zone using the duty ratio of energy transfer calculated by the duty ratio calculator.

Abstract translation: 本发明的实施例提供一种用于产生用于控制转换器开关的峰值电流的参考信号的方法和电路。 根据至少一个实施例，一个死区发生器被配置成在与隔离转换器的初级侧电源电压分开的输入电压信号中形成死区，以及占空比计算器，被配置为计算能量的占空比 转移到次级侧。 该电路还包括一个操作器，其被配置为使用由占空比计算器计算的能量传递的占空比来产生和输出用于使用具有死区的死区电压信号来控制转换器开关的峰值电流的参考信号。

公开(公告)号：US20150002037A1

公开(公告)日：2015-01-01

申请号：US14027491

申请日：2013-09-16

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Sang Hyun CHA ,  Deuk Hee PARK ,  Chan Woo PARK ,  Yun Joong LEE ,  Jong Tae HWANG ,  Je Hyeon YU ,  Soo Hyun MOON ,  Hye Jin LEE ,  Chang Seok LEE

IPC: H05B33/08

CPC classification number: H05B33/0824

Abstract: There is provided a light emitting diode driving apparatus charging and discharging a valley fill power by comparing a voltage level of rectified power with a preset reference voltage. The light emitting diode driving apparatus includes a rectifying unit rectifying input AC power, a charging and discharging unit comparing a voltage level of power rectified by the rectifying unit with a preset reference voltage to charge and discharge the rectified power depending on the comparison result, and a driving unit driving a light emitting diode depending on the power rectified by the rectifying unit and a voltage discharged from the charging and discharging unit.

Abstract translation: 提供一种发光二极管驱动装置，通过将整流功率的电压与预设的参考电压进行比较来充电和放电谷值充电功率。 发光二极管驱动装置包括整流单元，对输入的交流电进行整流;充放电单元将由整流单元整流的电压的电平与预设的参考电压进行比较，以根据比较结果对整流功率进行充放电;以及 驱动单元，其根据由整流单元整流的功率和从充放电单元放电的电压来驱动发光二极管。

公开(公告)号：US20140184078A1

公开(公告)日：2014-07-03

申请号：US13874937

申请日：2013-05-01

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Jong Tae HWANG ,  Sang Hyun CHA ,  Chang Seok LEE ,  Deuk Hee PARK

IPC: H05B33/08

CPC classification number: H05B33/083

Abstract: There is provided a light emitting diode driving device capable of preventing a number of switches from being turned on simultaneously when a plurality of light emitting diodes are respectively driven using a plurality of switches, the light emitting diode driving device, including: a light emitting diode unit having a plurality of light emitting diodes connected to one another in series and emitting light through receiving rectified power; and a driving unit having a plurality of drivers driving the plurality of light emitting diodes of the light emitting diode unit, respectively, wherein each of the plurality of drivers selects a maximum voltage from among a plurality of detection voltages with respect to current flowing in at least one light emitting diode corresponding thereto and compares the maximum voltage with a preset reference voltage to thereby drive the corresponding light emitting diode.

Abstract translation: 提供了一种发光二极管驱动装置，其能够在使用多个开关分别驱动多个发光二极管的同时防止多个开关导通，该发光二极管驱动装置包括：发光二极管 单元，具有多个彼此串联连接的发光二极管，并通过接收整流功率发光; 以及驱动单元，其具有分别驱动所述发光二极管单元的多个发光二极管的多个驱动器，其中所述多个驱动器中的每一个驱动器从多个检测电压中选择相对于流入的电流的最大电压 至少一个对应于其的发光二极管，并将最大电压与预设参考电压进行比较，从而驱动相应的发光二极管。

公开(公告)号：US20140184077A1

公开(公告)日：2014-07-03

申请号：US13842244

申请日：2013-03-15

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Yun Joong LEE ,  Jong Tae HWANG ,  Chan Woo PARK ,  Je Hyeon YU ,  Chang Seok LEE

IPC: H05B33/08

CPC classification number: H05B33/083

Abstract: There is provided a light emitting diode (LED) driving apparatus configured such that a waveform of current input to an LED follows a sine wave, the LED driving apparatus including, a switching unit switching an LED unit having a plurality of LEDs receiving rectified power and emitting light, a driving control unit controlling the switching of the switching unit according to a voltage level of the rectified power, a current limiting unit limiting current flowing in the LED unit, and an adjusting unit adjusting current limitation of the current limiting unit according to the voltage level of the rectified power.

Abstract translation: 提供了一种发光二极管（LED）驱动装置，其被配置为使得输入到LED的电流的波形遵循正弦波，该LED驱动装置包括：切换单元，其切换具有接收整流电力的多个LED的LED单元;以及 驱动控制单元，其根据整流电源的电压控制开关单元的切换，限制在LED单元中流动的电流的限流单元，以及调节单元，根据所述调节单元调整限流单元的电流限制 整流电源的电压电平。

公开(公告)号：US20140035473A1

公开(公告)日：2014-02-06

申请号：US13839145

申请日：2013-03-15

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD. ,  UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION

Inventor： Deuk Hee PARK ,  Joong Ho CHOI ,  Sang Hyun CHA ,  Jae Shin LEE ,  Chang Seok LEE ,  Yun Joong LEE

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/083

Abstract: There is provided an illumination driving apparatus for a light emitting diode, the apparatus including: a light emitting unit including M number of light emitting diodes (LEDs) connected in series and driven by an output voltage rectified in a rectifying unit; an LED switch unit including N number of LED switches connected in parallel with at least N number of the M LEDs, respectively, and connected in series; an LED switch control signal generating unit comparing the output voltage of the rectifying unit with each of the first to Nth preset reference voltages to generate N number of LED switch control signals controlling the LED switch unit; and an LED switch controlling unit transferring the N number of LED switch control signals to the LED switch unit.

Abstract translation: 提供了一种用于发光二极管的照明驱动装置，该装置包括：发光单元，包括M个串联连接并由整流单元整流的输出电压驱动的发光二极管（LED）; LED开关单元，其分别包括与至少N个M个LED并联连接的N个LED开关并串联连接; LED开关控制信号发生单元，将整流单元的输出电压与第一至第N预设参考电压中的每一个进行比较，以产生控制LED开关单元的N个LED开关控制信号; 以及将N个LED开关控制信号传送到LED开关单元的LED开关控制单元。