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    • 2. 发明申请
    • SLEEP CURRENT ADJUSTING CIRCUIT OF SYSTEM ON CHIP
    • 休眠电流调节系统芯片电路
    • US20080278139A1
    • 2008-11-13
    • US12105966
    • 2008-04-18
    • Yong Il KwonMyeung Su KimJoon Hyung LimKoon Shik ChoTah Joon Park
    • Yong Il KwonMyeung Su KimJoon Hyung LimKoon Shik ChoTah Joon Park
    • H02M3/156
    • G11C5/14G11C5/148
    • There is provided a sleep current adjusting circuit of a system on chip including: a regulator supplying a turn-on voltage and a normal current when a mode selection signal is a normal mode signal, and a turn-off voltage when the mode selection signal is a sleep mode signal; a switching device turned on by the turn-on voltage of the regulator to supply the normal current from the regulator to a main circuit part and a sleep operation circuit part, respectively, and turned off by the turn-off voltage of the regulator to block the normal current from being supplied to the main circuit part and supply the sleep current to the sleep operation circuit part; and a current limit device limiting an operating current flowing in response to the operating voltage and supplying the sleep current to the sleep operation circuit part.
    • 提供了一种片上系统的睡眠电流调节电路,包括:当模式选择信号是正常模式信号时,提供接通电压和正常电流的调节器,以及当模式选择信号为 睡眠模式信号; 开关装置由调节器的导通电压导通,以分别将调节器的正常电流提供给主电路部分和睡眠操作电路部分,并通过调节器的截止电压将其截止以阻止 正常电流被提供给主电路部分并将睡眠电流提供给睡眠操作电路部分; 以及电流限制装置,其限制响应于所述工作电压流动的工作电流并将睡眠电流提供给所述睡眠操作电路部分。
    • 5. 发明授权
    • Micropower RC oscillator
    • 微功率RC振荡器
    • US07612623B2
    • 2009-11-03
    • US11756032
    • 2007-05-31
    • Joon Hyung LimMyeung Su KimYong Il KwonTah Joon Park
    • Joon Hyung LimMyeung Su KimYong Il KwonTah Joon Park
    • H03K3/26
    • H03K4/06
    • A micropower RC oscillator comprises a current generating section including a current source that generates a current; and a variable resistor of which the magnitude is variably set and which is configured by combining resistor elements at a predetermined ratio, the resistor elements having opposite characteristics to each other with respect to a temperature change, the variable resistor adjusting the magnitude of the generated current; a start-up circuit section connected to the current generating section and fixing a bias operating point to a constant value such that the current generating section stably generates a current; a charge and discharge circuit section including a variable capacitor, of which the magnitude is variably set, and a plurality of transistors, the charge and discharge circuit section charging and discharging the variable capacitor by using the current generated from the current generating section and the plurality of transistors; an oscillation signal output section connected to the charge and discharge circuit section and including a plurality of inverters, the oscillation signal output section outputting an oscillation signal of which the frequency is determined by the resistance of the variable resistor and the capacitance of the variable capacitor; and an inverter driving power supply section mirroring the current generated from the current generating section and then providing the mirrored current as a driving power supply of the inverters.
    • 微功率RC振荡器包括电流产生部分,其包括产生电流的电流源; 以及可变电阻器,其大小可变地设置,并且通过以预定比例组合电阻器元件来构成,所述电阻器元件相对于温度变化具有彼此相反的特性,所述可变电阻器调节所产生的电流的幅度 ; 连接到电流产生部分的启动电路部分,并将偏压工作点固定为恒定值,使得电流产生部件稳定地产生电流; 一个充电和放电电路部分,包括其可变电容值的可变电容器,以及多个晶体管,该充放电电路部分通过使用从电流产生部分产生的电流和多个晶体管对可变电容器进行充电和放电 的晶体管; 振荡信号输出部分连接到充放电电路部分并且包括多个反相器,振荡信号输出部分输出频率由可变电阻器的电阻确定的振荡信号和可变电容器的电容; 以及反相器驱动电源部,其将从电流产生部产生的电流反射,然后提供镜像电流作为逆变器的驱动电源。
    • 9. 发明授权
    • Regulator with soft-start using current source
    • 具有软启动的调节器,使用电流源
    • US08018214B2
    • 2011-09-13
    • US12259358
    • 2008-10-28
    • Yong Il KwonJoon Hyung LimTah Joon Park
    • Yong Il KwonJoon Hyung LimTah Joon Park
    • G05F1/59
    • G05F1/565Y10S323/901
    • There is provided a regulator with soft-start using a current source. The regulator with soft-start may include: a power switch unit including first and second power switches connected between a power supply terminal and an output terminal; a load capacitor connected between the output terminal and a ground; a voltage detection unit detecting a voltage of the output terminal; a comparison unit comparing a detection voltage and a predetermined reference voltage, and outputting first and second switching signals; a current generating a predetermined constant current; a current control unit switching a connection between a control terminal of the first power switch and the current source unit according to the first switching, and switching a connection between the control terminal of the first power switch and the ground according to the second switching signal; and an error amplification unit amplifying an error voltage between the detection.
    • 提供了一个使用电流源的软启动调节器。 具有软启动的调节器可以包括:电源开关单元,包括连接在电源端子和输出端子之间的第一和第二电源开关; 连接在输出端子和地之间的负载电容器; 电压检测单元,检测输出端子的电压; 比较单元,比较检测电压和预定参考电压,并输出第一和第二开关信号; 产生预定恒定电流的电流; 电流控制单元根据第一开关切换第一电力开关的控制端子与电流源单元之间的连接,并根据第二开关信号切换第一电力开关的控制端子与地的连接; 以及放大检测之间的误差电压的误差放大单元。