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公开(公告)号：KR1020130005009A
公开(公告)日：2013-01-15
申请号：KR1020110066298
申请日：2011-07-05
Applicant: 전북대학교산학협력단
CPC classification number: G09G3/32 , H05B33/0827 , H05B33/083 , Y02B20/341
Abstract: PURPOSE: A feedback circuit and an LED backlight driving device applying the same are provided to reduce the power consumption and the area of the feedback circuit by enhancing the complexity of the circuit. CONSTITUTION: A reference voltage generating part(110) generates a reference voltage used in a feedback circuit(100). A minimum voltage detecting part(120) detects and outputs the minimum voltage among voltages applied to loads. A subtraction part(130) outputs voltage differences between the output voltages and the set voltage of the minimum voltage detecting part. A gain control part(140) controls gain values according to the voltage differences outputted from the subtraction part to output feedback voltages. A current mirror part(150) feeds back the feedback voltages to a DC-DC converter(200). [Reference numerals] (200) DC/DC converter
Abstract translation: 目的：提供反馈电路和应用其的LED背光驱动装置，通过提高电路的复杂度来降低功耗和反馈电路的面积。 构成：参考电压产生部分（110）产生在反馈电路（100）中使用的参考电压。 最小电压检测部分（120）检测并输出施加到负载的电压中的最小电压。 减法部（130）输出输出电压与最小电压检测部的设定电压之间的电压差。 增益控制部（140）根据从减法部输出的电压差来控制增益值，输出反馈电压。 电流镜部分（150）将反馈电压反馈到DC-DC转换器（200）。 （附图标记）（200）DC / DC转换器
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公开(公告)号：KR101263671B1
公开(公告)日：2013-05-22
申请号：KR1020110066298
申请日：2011-07-05
Applicant: 전북대학교산학협력단
Abstract: 피드백회로및 LED 백라이트구동장치가제공된다. 본피드백회로는, 기준전압을생성하는기준전압생성부, 복수개의부하들에인가되는전압중에서최저전압을검출하여출력하는최저전압검출부, 최저전압검출부의출력전압과설정전압의차이전압을출력하는감산부, 감산부로부터출력된차이전압에따라게인값을조절하여피드백전압을출력하는게인제어부, 피드백전압을상기 DC-DC 컨버터로피드백하는전류미러부를포함하는피드백회로를제공할수 있게되어, 회로의복잡도가낮고면적이작으며전력소모가작은피드백회로를제공할수 있게된다.
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公开(公告)号：KR101261342B1
公开(公告)日：2013-05-07
申请号：KR1020110066297
申请日：2011-07-05
Applicant: 전북대학교산학협력단
IPC: G05F3/02
Abstract: 양의온도계수를갖는제1 전류를생성하는제1 전류생성부, 음의온도계수를갖는제2 전류를생성하는제2 전류생성부, 및제1 전류및 제2 전류를이용하여기준전류를생성하는기준전류생성부를포함하는기준전류생성회로를제공할수 있게되어, 전원전압이 1V인저전압에서도동작할수 있고, 온도의존성, 전원전압의존성이낮은기준전류를제공할수 있게된다.
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公开(公告)号：KR1020130005008A
公开(公告)日：2013-01-15
申请号：KR1020110066297
申请日：2011-07-05
Applicant: 전북대학교산학협력단
IPC: G05F3/02
Abstract: PURPOSE: A reference current generation circuit is provided to be operated at 1V power voltage and provide a reference current having low temperature dependence and power voltage dependence. CONSTITUTION: A first current generator(10) generates a first current. The first current has a positive temperature coefficient. A second current generator(120) generates a second current. A reference current generator(130) generates a reference current by using the first current and the second current.
Abstract translation: 目的：提供参考电流产生电路，以1V电源电压工作，并提供具有低温度依赖性和功率电压依赖性的参考电流。 构成：第一电流发生器（10）产生第一电流。 第一电流具有正温度系数。 第二电流发生器（120）产生第二电流。 参考电流发生器（130）通过使用第一电流和第二电流产生参考电流。
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