METHOD FOR STABLING VOLTAGE, PULSE FREQUENCY MODULATING CIRCUIT AND POWER SUPPLY USING THE SAME
    3.
    发明申请
    METHOD FOR STABLING VOLTAGE, PULSE FREQUENCY MODULATING CIRCUIT AND POWER SUPPLY USING THE SAME 有权
    用于固定电压,脉冲频率调制电路的方法和使用该电路的电源

    公开(公告)号:US20080218155A1

    公开(公告)日:2008-09-11

    申请号:US11737556

    申请日:2007-04-19

    IPC分类号: G01R19/252

    CPC分类号: H02M3/1563

    摘要: A method for stabling a voltage, a pulse frequency modulating circuit and a power supply using the same are provided. The method includes the following steps. First, a comparing signal is provided. Then, set the comparing signal to be a first logic state when the voltage to be stabilized is lower than a preset voltage. Next provide a pulse signal when the comparing signal is set in the first logic state. Afterwards, adjust the enable time of the pulse signal based on the number of times of logic state changing of the comparing signal within a preset period and, adjust the voltage according to the enable time of the pulse signal.

    摘要翻译: 提供了使电压稳定的方法,脉冲频率调制电路和使用该电压的电源。 该方法包括以下步骤。 首先,提供比较信号。 然后,当要稳定的电压低于预设电压时,将比较信号设置为第一逻辑状态。 接下来,当比较信号被设置在第一逻辑状态时,提供脉冲信号。 然后,根据预设期间的比较信号的逻辑状态变化次数,调整脉冲信号的使能时间,并根据脉冲信号的使能时间调整电压。

    DC-DC converter with auto-switching between PWM and PFM and OLED display using the same
    4.
    发明授权
    DC-DC converter with auto-switching between PWM and PFM and OLED display using the same 有权
    DC-DC转换器在PWM和PFM之间自动切换,OLED显示屏采用相同的方式

    公开(公告)号:US09024932B2

    公开(公告)日:2015-05-05

    申请号:US12836362

    申请日:2010-07-14

    摘要: A DC-DC converter with auto-switching between pulse width modulation (PWM) and pulse frequency modulation (PFM) is used in an organic light emitting diode (OLED) display and judges power consumption of an OLED array of the display according to display data of the display and thus determines a switching time between PWM and PFM. The converter comprises a content statistic unit, an auto-switching control unit, a PWM controller, a PFM controller and a power generator. The content statistic unit receives and accumulates the display data of the OLED display and then outputs a statistic value. The auto-switching control unit outputs a control signal according to the statistic value to control the PWM controller and the PFM controller and to switch to a PWM mode or a PFM mode.

    摘要翻译: 在有机发光二极管(OLED)显示器中使用具有在脉冲宽度调制(PWM)和脉冲频率调制(PFM)之间自动切换的DC-DC转换器,并根据显示数据判断显示器的OLED阵列的功耗 从而确定PWM和PFM之间的切换时间。 该转换器包括内容统计单元,自动切换控制单元,PWM控制器,PFM控制器和发电机。 内容统计单元接收和累积OLED显示器的显示数据,然后输出统计值。 自动切换控制单元根据统计值输出控制信号,控制PWM控制器和PFM控制器,切换到PWM模式或PFM模式。

    DC-DC CONVERTER WITH AUTO-SWITCHING BETWEEN PWM AND PFM AND OLED DISPLAY USING THE SAME
    5.
    发明申请
    DC-DC CONVERTER WITH AUTO-SWITCHING BETWEEN PWM AND PFM AND OLED DISPLAY USING THE SAME 有权
    具有PWM和PFM之间的自动切换的DC-DC转换器和使用其的OLED显示器

    公开(公告)号:US20110025673A1

    公开(公告)日:2011-02-03

    申请号:US12836362

    申请日:2010-07-14

    IPC分类号: G06F3/038 G09G3/30

    摘要: A DC-DC converter with auto-switching between pulse width modulation (PWM) and pulse frequency modulation (PFM) is used in an organic light emitting diode (OLED) display and judges power consumption of an OLED array of the display according to display data of the display and thus determines a switching time between PWM and PFM. The converter comprises a content statistic unit, an auto-switching control unit, a PWM controller, a PFM controller and a power generator. The content statistic unit receives and accumulates the display data of the OLED display and then outputs a statistic value. The auto-switching control unit outputs a control signal according to the statistic value to control the PWM controller and the PFM controller and to switch to a PWM mode or a PFM mode.

    摘要翻译: 在有机发光二极管(OLED)显示器中使用具有在脉冲宽度调制(PWM)和脉冲频率调制(PFM)之间自动切换的DC-DC转换器,并根据显示数据判断显示器的OLED阵列的功耗 从而确定PWM和PFM之间的切换时间。 该转换器包括内容统计单元,自动切换控制单元,PWM控制器,PFM控制器和发电机。 内容统计单元接收和累积OLED显示器的显示数据,然后输出统计值。 自动切换控制单元根据统计值输出控制信号,控制PWM控制器和PFM控制器,切换到PWM模式或PFM模式。

    Power supply with pulse frequency modulating circuit calculating logic state changing
    6.
    发明授权
    Power supply with pulse frequency modulating circuit calculating logic state changing 有权
    电源与脉冲频率调制电路计算逻辑状态变化

    公开(公告)号:US07638989B2

    公开(公告)日:2009-12-29

    申请号:US11737556

    申请日:2007-04-19

    IPC分类号: G05F1/575

    CPC分类号: H02M3/1563

    摘要: A method for stabling a voltage, a pulse frequency modulating circuit and a power supply using the same are provided. The method includes the following steps. First, a comparing signal is provided. Then, set the comparing signal to be a first logic state when the voltage to be stabilized is lower than a preset voltage. Next provide a pulse signal when the comparing signal is set in the first logic state. Afterwards, adjust the enable time of the pulse signal based on the number of times of logic state changing of the comparing signal within a preset period and, adjust the voltage according to the enable time of the pulse signal.

    摘要翻译: 提供了使电压稳定的方法,脉冲频率调制电路和使用该电压的电源。 该方法包括以下步骤。 首先,提供比较信号。 然后,当要稳定的电压低于预设电压时,将比较信号设置为第一逻辑状态。 接下来,当比较信号被设置在第一逻辑状态时,提供脉冲信号。 然后,根据预设期间的比较信号的逻辑状态变化次数,调整脉冲信号的使能时间,并根据脉冲信号的使能时间调整电压。