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    • 7. 发明授权
    • Power supply controller having analog to digital converter
    • 电源控制器具有模数转换器
    • US08310220B2
    • 2012-11-13
    • US12461655
    • 2009-08-19
    • Hideyuki TakahashiYoshimi Matsumoto
    • Hideyuki TakahashiYoshimi Matsumoto
    • G05F1/40
    • H02M3/157H02M1/36H02M2001/0012H03M1/182
    • A power supply controller includes an analog to digital (A/D) converter that performs analog-digital conversion of an output voltage and outputs a digital signal, a deviation signal generator unit that generates a deviation signal from the digital signal and a standard voltage value serving as an output voltage target value, and a power controller unit that controls the output voltage based on the deviation signal. The power supply controller includes a conversion range setting unit that sets a range of the reference voltage into the A/D converter based on a first signal as the digital signal in a power supply startup period, and sets the reference voltage range into the A/D converter based on a second signal as the deviation signal or as a signal corresponding to the deviation signal in a steady state period.
    • 电源控制器包括对输出电压执行模数转换并输出数字信号的模数(A / D)转换器,从数字信号产生偏差信号的偏差信号发生器单元和标准电压值 用作输出电压目标值,以及功率控制器单元,其基于偏差信号来控制输出电压。 电源控制器包括转换范围设置单元,其基于作为电源启动时段中的数字信号的第一信号将参考电压的范围设置为A / D转换器,并将参考电压范围设置为A / D转换器基于第二信号作为偏差信号,或者作为与稳定状态时段中的偏差信号相对应的信号。
    • 8. 发明授权
    • Power supply control device and power supply control method
    • 电源控制装置及电源控制方式
    • US08264212B2
    • 2012-09-11
    • US12662484
    • 2010-04-20
    • Hideyuki Takahashi
    • Hideyuki Takahashi
    • G05F1/575H02M3/335
    • H02M3/157
    • Control accuracy with regard to variation of output voltage is improved. A direct current converter unit (20) that steps up or steps down an input voltage (Vin) to be outputted, and a control unit (10) that controls output voltage (Vout) of the direct current converter unit (20) by a pulse width modulation signal (Sw) are provided; the direct current converter unit (20) is provided with a voltage detection circuit (24) that monitors the output voltage (Vout); the control unit (10) is provided with an A/D converter (13) that samples a monitored voltage value (Vd) of the voltage detection circuit (24); and a pulse oscillator (14) that controls the position of one edge by an A/D conversion synchronous signal (Ss) indicating the start of sampling by the A/D converter (13), and generates the pulse width modulation signal (Sw), which controls the position of the other edge based on the monitored voltage value (Vd).
    • 改善输出电压变化的控制精度。 1.一种升压或降压输出电压(Vin)的直流变换单元(20),以及通过脉冲控制所述直流变换器单元(20)的输出电压(Vout)的控制单元(10) 提供宽度调制信号(Sw); 直流电转换器单元(20)设置有监视输出电压(Vout)的电压检测电路(24); 控制单元(10)设置有对电压检测电路(24)的监视电压值(Vd)进行采样的A / D转换器(13)。 以及脉冲振荡器(14),其通过表示由A / D转换器(13)开始采样的A / D转换同步信号(Ss)来控制一个边沿的位置,并产生脉宽调制信号(Sw) ,其基于监视的电压值(Vd)来控制另一边缘的位置。
    • 10. 发明授权
    • Optical signal receiving circuit
    • 光信号接收电路
    • US08170425B2
    • 2012-05-01
    • US12350612
    • 2009-01-08
    • Hiroyuki YoshiokaRyuichi SatomuraHideyuki TakahashiHidefumi Yoshida
    • Hiroyuki YoshiokaRyuichi SatomuraHideyuki TakahashiHidefumi Yoshida
    • H04B10/06
    • H03F3/087
    • To solve problematic trade-off between a bandwidth and a in-band deviation in an optical signal receiving circuit of a gigabit order that is required to have a wide dynamic range, the optical signal receiving circuit has a current-voltage conversion circuit that receives as an input a current signal outputted from a photoelectric conversion circuit for receiving and converting an optical signal into a current signal and converts it into a voltage signal, and realizes the wide dynamic range by providing the current-voltage conversion circuit with an AGC function and a phase compensation function by MOS transistors and a capacitance. Further, by providing the current-voltage conversion circuit with a second phase compensation function by a MOS transistor and a capacitance, it is made possible for the optical signal receiving circuit to reduce the in-band deviation at the time of minimum gain while securing the bandwidth at the time of maximum gain.
    • 为了解决需要具有宽动态范围的吉比特级的光信号接收电路中的带宽和带内偏差之间的有问题的权衡,光信号接收电路具有电流 - 电压转换电路,其接收为 输入从光电转换电路输出的电流信号,用于接收光信号并将其转换为电流信号并将其转换成电压信号,并通过向电流 - 电压转换电路提供AGC功能和 MOS晶体管的相位补偿功能和电容。 此外,通过由MOS晶体管提供具有第二相位补偿功能的电流 - 电压转换电路和电容,使得光信号接收电路可以在最小增益时减小带内偏差,同时确保 最大增益时的带宽。