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    • 1. 发明公开
    • 제어된 스타트 업이 가능한 로우 드랍아웃 회로 및 그 제어 방법
    • 低压差电路启动控制启动及其控制方法
    • KR1020140033578A
    • 2014-03-19
    • KR1020120098426
    • 2012-09-05
    • 주식회사 실리콘웍스
    • 구만원우영진전진용한대근손영석
    • G05F1/565G05F1/10
    • G05F1/56
    • A low dropout circuit enabling controlled start-up and a controlling method thereof are disclosed. The low dropout circuit according to an embodiment of the present invention includes a start up control unit that includes an amplifier receiving a feedback voltage determined by a predetermined reference voltage and output voltage and providing a first voltage corresponding thereto; a pass element connected to an input power source and an output node providing the output voltage and that inputs one of the first voltage provided from the amplifier based on the level of the output voltage and a second voltage generated by using the current source to the gate of the pass element. When the pass element is an n-type pass element, the start up control unit includes a current source connected to a predetermined third voltage; a selection unit providing any one of the first voltage and the second voltage to the gate of the pass element; and a selection control unit that senses the level of the output voltage, compares the level of the output voltage with a predetermined threshold voltage, and controls the selection unit so that the first voltage is provided to the gate when the level of the output voltage is equal to or higher than the threshold voltage, and the second voltage is provided to the gate when the level of the output voltage is lower than the threshold voltage. Thus, it is possible to easily control a slew rate at start up and thus limit an incoming current at start up. [Reference numerals] (120) START-UP CONTROL UNIT; (130) PASSIVE ELEMENT
    • 公开了一种能够实现控制启动的低压差电路及其控制方法。 根据本发明的实施例的低压差电路包括启动控制单元,其包括接收由预定参考电压和输出电压确定的反馈电压并提供与其对应的第一电压的放大器; 连接到输入电源的传递元件和提供输出电压的输出节点,并且基于输出电压的电平和通过使用电流源产生的第二电压来输入从放大器提供的第一电压之一到门 的通过元素。 当通过元件是n型通过元件时,启动控制单元包括连接到预定的第三电压的电流源; 选择单元,向所述通过元件的栅极提供所述第一电压和所述第二电压中的任何一个; 以及选择控制单元,其感测输出电压的电平,将输出电压的电平与预定的阈值电压进行比较,并且当输出电压的电平为 等于或高于阈值电压,并且当输出电压的电平低于阈值电压时,将第二电压提供给栅极。 因此,可以容易地控制启动时的转换速率,从而限制启动时的输入电流。 (附图标记)(120)启动控制单元; (130)被动元件
    • 2. 发明授权
    • 시스템 온 칩 구현이 가능하고 100% 듀티 사이클 모드가 가능한 스위칭 모드 컨버터 및 그 제어 방법
    • 切换模式转换器启用芯片系统的100%占空比模式及其控制方法
    • KR101369173B1
    • 2014-03-06
    • KR1020120098402
    • 2012-09-05
    • 주식회사 실리콘웍스
    • 구만원우영진전진용한대근손영석
    • H02M3/07H02M3/155
    • Disclosed are a switching mode converter capable of performing a system-on-chip and facilitating a 100% duty cycle mode and a control method. The switching mode converter comprises a switching device which connected between input power and other side of a first semiconductor device connected to the ground; a bootstrap capacitor which is connected to the other side of the first semiconductor device; a common charge pump which receives one of a first reference voltage or a second reference voltage and offers output voltage corresponding to the received voltage to other side of the bootstrap capacitor; and a control unit which determines whether or not a duty cycle of the switching device is 100% and inputs one of the first reference voltage or the second reference voltage to the common charge pump according to determination for the duty cycle. The control unit is provided to control the voltage level of the second reference voltage by considering the output voltage of the switching mode converter or a voltage level of input power and to input the second reference voltage to the common charge pump, thereby performing the system-on-chip (SoC) and offering a stable 100% duty cycle mode. [Reference numerals] (210) Second reference voltage generation unit; (230) Common charge pump; (240) Control unit
    • 公开了一种能够执行片上系统并促进100%占空比模式和控制方法的开关模式转换器。 开关模式转换器包括连接在连接到地的第一半导体器件的输入功率与另一侧之间的开关器件; 连接到所述第一半导体器件的另一侧的自举电容器; 公共电荷泵,其接收第一参考电压或第二参考电压中的一个,并且将与所接收的电压相对应的输出电压提供给所述自举电容器的另一侧; 以及控制单元,其根据占空比的确定来确定开关装置的占空比是否为100%,并将第一参考电压或第二参考电压中的一个输入到公共电荷泵。 控制单元被设置为通过考虑开关模式转换器的输出电压或输入功率的电压电平来控制第二参考电压的电压电平,并将第二参考电压输入到公共电荷泵,由此执行系统 ​​- 片上(SoC),并提供稳定的100%占空比模式。 (附图标记)(210)第二参考电压产生单元; (230)普通电荷泵; (240)控制单元
    • 3. 发明授权
    • 과전압 보호 기능을 구비한 스위칭 모드 컨버터 및 그 제어 방법
    • 具有过电压保护功能的开关模式转换器及其控制方法
    • KR101355412B1
    • 2014-01-29
    • KR1020120098406
    • 2012-09-05
    • 주식회사 실리콘웍스
    • 구만원우영진전진용한대근손영석
    • H02M1/32
    • Disclosed are a switching mode converter having an overvoltage protection function and a method for controlling the same. A switching mode converter according to one embodiment of the present invention comprises: a switching device connected to one end of a first semiconductor device with the other end connected to the ground and to an input power source; a bootstrap capacitor connected to the one end of the first semiconductor device and to a charge pump; a discharge unit connected to a gate of the switching device and to the ground; and a control unit for controlling the discharge unit to discharge a gate voltage of the switching device if a voltage equal to or greater than a predetermined threshold voltage is applied to the gate of the switching device, wherein the control unit detects a charging voltage for the bootstrap capacitor and judges that the gate voltage of the switching device is equal to or greater than the threshold voltage if the detected charging voltage is equal to or greater than a predetermined first voltage, whereby it can be prevented that the switching device is broken when overvoltage is applied to the gate of the switching device, thereby protecting a circuit connected to terminals next to the switching device. [Reference numerals] (210) Charge pump; (260) Control unit; (270) Discharge unit
    • 公开了具有过电压保护功能的开关模式转换器及其控制方法。 根据本发明的一个实施例的开关模式转换器包括:开关装置,其连接到第一半导体器件的一端,另一端连接到地和输入电源; 连接到第一半导体器件的一端和电荷泵的自举电容器; 连接到开关装置的栅极和地的放电单元; 以及控制单元,用于如果将等于或大于预定阈值电压的电压施加到所述开关装置的栅极,则控制所述放电单元对所述开关装置的栅极电压进行放电,其中所述控制单元检测所述开关装置的充电电压 如果检测到的充电电压等于或大于预定的第一电压,则判断开关装置的栅极电压等于或大于阈值电压,从而可以防止当过电压时开关装置断开 施加到开关装置的栅极,从而保护与开关装置旁边的端子连接的电路。 (附图标记)(210)电荷泵; (260)控制单元; (270)放电单元
    • 7. 发明公开
    • 디스플레이 구동회로
    • 显示驱动电路
    • KR1020100030688A
    • 2010-03-19
    • KR1020080089516
    • 2008-09-11
    • 주식회사 실리콘웍스
    • 손영석송현민조현자안용성오형석한대근
    • G09G3/36G09G3/20G02F1/133
    • G09G3/3614G09G3/3688G09G2310/0248G09G2310/0297G09G2330/021
    • PURPOSE: A display driving circuit using a charge sharing is provided to minimize power consumption by controlling a charge sharing and the voltage level of output terminals. CONSTITUTION: A buffer part(710) buffers a plurality of pixel driving signals. A N dot switching circuit(720) responds to a first path selection signal and a second path selection signal according to a dot inversion system. The N dot switching circuit selects the path of the plurality of pixel driving signals outputted from the buffer part. The N dot switching circuit switches to a plurality of output terminals. A charge sharing switching circuit(730) distributes an electric charge between a plurality of output terminals in response to a charge sharing control signal. A common voltage level control switching circuit(740) controls a charge sharing and voltage level between a plurality of output terminals in response to a common voltage level control signal.
    • 目的:提供使用电荷共享的显示驱动电路,通过控制电荷共享和输出端子的电压电平来最小化功耗。 构成:缓冲器部分(710)缓冲多个像素驱动信号。 N点切换电路(720)根据点倒置系统对第一路径选择信号和第二路径选择信号进行响应。 N点切换电路选择从缓冲部输出的多个像素驱动信号的路径。 N点切换电路切换到多个输出端子。 电荷共享切换电路(730)响应于电荷共享控制信号在多个输出端子之间分配电荷。 公共电压电平控制开关电路(740)响应于公共电压电平控制信号来控制多个输出端子之间的电荷共享和电压电平。
    • 10. 发明公开
    • 디스플레이 구동 IC 및 디스플레이 구동시스템
    • 显示驱动集成电路和显示驱动系统
    • KR1020090035049A
    • 2009-04-09
    • KR1020070100082
    • 2007-10-05
    • 주식회사 실리콘웍스
    • 안용성김대성한대근
    • G09G3/20G09G3/36H03M1/66
    • G09G3/3688G09G2310/027G09G2370/08
    • A display driving IC and a display driving system are provided to perform a high resolution without a new design of a timing control device and an interface part of a DDI(Display Driving IC). A display driving IC(421) comprises a shift register array(510), a data processing part(520), a line register(530), a data DC conversion circuit(540), a DAC(Digital to Analog converter) part(550), a gamma reference voltage generating circuit(560), and an output circuit(570). The shift register array generates a line register activation signal(LEN) and a first activation signal. The data processing part generates a plurality of differential data, an R bit data, and a switch control signal. The data DC conversion circuit converts data delivered from the line register into a DC data.
    • 提供显示驱动IC和显示驱动系统以执行高分辨率,而不需要新的设计时序控制装置和DDI(显示驱动IC)的接口部分。 显示驱动IC(421)包括移位寄存器阵列(510),数据处理部分(520),行寄存器(530),数据直流转换电路(540),DAC(数模转换器)部分 550),伽马参考电压产生电路(560)和输出电路(570)。 移位寄存器阵列产生线路寄存器激活信号(LEN)和第一激活信号。 数据处理部分产生多个差分数据,R位数据和开关控制信号。 数据直流转换电路将从线路寄存器传送的数据转换为直流数据。