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    • 2. 发明申请
    • DC-DC converter
    • DC-DC转换器
    • US20050104565A1
    • 2005-05-19
    • US10985882
    • 2004-11-12
    • Kazuhiko NagaokaSatoshi WadaTsukasa Kawahara
    • Kazuhiko NagaokaSatoshi WadaTsukasa Kawahara
    • H02M3/155H02M1/12H02M3/158H02M3/20
    • H02M3/158H02J2001/008H02M2001/009
    • An inductor 6 accumulates an energy therein or releases the accumulated energy according to the state of a main switch element 10 being turned ON/OFF. When the inductor 6 releases an energy, if a sub-switch element 12 is in the ON state, a current is passed through a circuit downstream of the sub-switch element 12, thereby increasing an output voltage VO1. The sub-switch element 12 is a P-channel MOS transistor, and a sub-switch control circuit 18 outputs a control signal VCT1 for the sub-switch element 12. A level shift circuit 19 receives an output-side potential VP of the inductor 6, and outputs, as a control signal VG1 applied to the gate of the sub-switch element 12, the potential VP if the control signal VCT1 is at the L level or a potential (VP-VM) lower than the potential VP if the control signal VCT1 is at the H level. Thus, the output voltage of the DC-DC converter can be made precisely equal to the target voltage.
    • 电感器6在其中累积能量,或者根据主开关元件10被接通/断开的状态释放累积的能量。 当电感器6释放能量时,如果副开关元件12处于导通状态,则电流通过子开关元件12下游的电路,从而增加输出电压VO 1。子开关元件 12是P沟道MOS晶体管,子开关控制电路18输出副开关元件12的控制信号VCT1。电平移位电路19接收电感器6的输出侧电位VP,并输出 作为施加到副开关元件12的栅极的控制信号VG1,如果控制信号VCT1处于L电平,则电位VP或低于电位VP的电位VP(VP-VM),如果控制信号 VCT 1处于H电平。 因此,可以使DC-DC转换器的输出电压精确地等于目标电压。
    • 3. 发明授权
    • DC-DC converter
    • DC-DC转换器
    • US06998825B2
    • 2006-02-14
    • US10985882
    • 2004-11-12
    • Kazuhiko NagaokaSatoshi WadaTsukasa Kawahara
    • Kazuhiko NagaokaSatoshi WadaTsukasa Kawahara
    • G05F1/652
    • H02M3/158H02J2001/008H02M2001/009
    • An inductor 6 accumulates an energy therein or releases the accumulated energy according to the state of a main switch element 10 being turned ON/OFF. When the inductor 6 releases an energy, if a sub-switch element 12 is in the ON state, a current is passed through a circuit downstream of the sub-switch element 12, thereby increasing an output voltage VO1. The sub-switch element 12 is a P-channel MOS transistor, and a sub-switch control circuit 18 outputs a control signal VCT1 for the sub-switch element 12. A level shift circuit 19 receives an output-side potential VP of the inductor 6, and outputs, as a control signal VG1 applied to the gate of the sub-switch element 12, the potential VP if the control signal VCT1 is at the L level or a potential (VP−VM) lower than the potential VP if the control signal VCT1 is at the H level. Thus, the output voltage of the DC-DC converter can be made precisely equal to the target voltage.
    • 电感器6在其中累积能量,或者根据主开关元件10被接通/断开的状态释放累积的能量。 当电感器6释放能量时,如果副开关元件12处于导通状态,则电流通过副开关元件12下游的电路,从而增加输出电压VO 1。 副开关元件12是P沟道MOS晶体管,副开关控制电路18输出副开关元件12的控制信号VCT1。 电平移位电路19接收电感器6的输出侧电位VP,并且如果控制信号VCT 1处于电平位置,则作为施加到副开关元件12的栅极的控制信号VG1输出电位VP L电平或电位(VP-VM)低于电位VP,如果控制信号VCT 1处于H电平。 因此,可以使DC-DC转换器的输出电压精确地等于目标电压。
    • 4. 发明申请
    • Multi output DC-DC converter
    • 多输出DC-DC转换器
    • US20050088160A1
    • 2005-04-28
    • US10943164
    • 2004-09-17
    • Jun TanakaTsukasa KawaharaKazuhiko NagaokaSatoshi WadaShusaku Gotou
    • Jun TanakaTsukasa KawaharaKazuhiko NagaokaSatoshi WadaShusaku Gotou
    • G05F1/40H02M3/158
    • H02M3/158H02M2001/009
    • A multi output DC-DC converter is provided with a main switch which is turned ON and OFF at a predetermined cycle, and applies the input DC voltage of the DC power source to the inductor when turned ON; a plurality of diodes which rectify a voltage generated in the inductor when the main switch is off; an auxiliary switch connected in series to each of the plurality of diodes; and a plurality of capacitors connected to the respective series circuits of the plurality of diodes and the auxiliary switch, which respectively output a plurality of output voltages. And a control circuit performs a time-division control of turning the main switch ON and OFF in the predetermined cycle, and of selecting one of the plurality of auxiliary switches in the predetermined cycle, to thereby output an output voltage through the selected auxiliary switch, and, in the case where an enable signal is instructing to stop, forcefully turns OFF the auxiliary switch corresponding to the enable signal.
    • 多输出DC-DC转换器设置有以预定周期导通和截止的主开关,并且在接通时将直流电源的输入直流电压施加到电感器; 多个二极管,当主开关断开时,对电感器中产生的电压进行整流; 与所述多个二极管中的每一个串联连接的辅助开关; 以及连接到分别输出多个输出电压的多个二极管和辅助开关的各个串联电路的多个电容器。 并且控制电路执行在预定周期内接通和断开主开关的时分控制,并且在预定周期中选择多个辅助开关之一,从而通过所选择的辅助开关输出输出电压, 并且在使能信号指示停止的情况下,强制地关闭与使能信号对应的辅助开关。
    • 10. 发明申请
    • LOAD DRIVING APPARATUS
    • 负载驱动装置
    • US20100060177A1
    • 2010-03-11
    • US12553361
    • 2009-09-03
    • Go TAKATAShinichiro KataokaYasunori YamamotoTsukasa KawaharaRyuji UedaDaisuke Itou
    • Go TAKATAShinichiro KataokaYasunori YamamotoTsukasa KawaharaRyuji UedaDaisuke Itou
    • H05B37/02G05F1/00
    • H05B33/0815H05B33/0824
    • The load driving apparatus according to the present invention includes a load current setting signal generating section, a load current generating section, a reference voltage generating section and a drive voltage generating section. The load current setting signal generating section generates a desired load current setting signal. The load current generating section generates a load current based on the load current setting signal to drive the load. The reference voltage generating section generates a reference voltage based on the load current setting signal. The drive voltage generating section generates a drive voltage, supplies the drive voltage to the load, generates a between-both-terminals voltage between both terminals of the load current generating section based on the drive voltage and controls the drive voltage so that the difference between the between-both-terminals voltage and the reference voltage becomes small.
    • 根据本发明的负载驱动装置包括负载电流设定信号生成部,负载电流产生部,基准电压生成部和驱动电压生成部。 负载电流设定信号生成部生成期望的负载电流设定信号。 负载电流产生部根据负载电流设定信号生成负载电流,驱动负载。 参考电压产生部分基于负载电流设置信号产生参考电压。 驱动电压产生部生成驱动电压,向驱动电压供给驱动电压,根据驱动电压在负载电流产生部的两端之间产生两端电压,并控制驱动电压, 两端电压和参考电压变小。