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    • 3. 发明授权
    • Multi-phase switching regulator and driver circuit and control method thereof
    • 多相开关稳压器及其驱动电路及其控制方法
    • US08643354B2
    • 2014-02-04
    • US13134035
    • 2011-05-26
    • Yu-Wei ChangYuan-Huang ChengTing-Hung WangChia-Jung LeeChung-Sheng Cheng
    • Yu-Wei ChangYuan-Huang ChengTing-Hung WangChia-Jung LeeChung-Sheng Cheng
    • G05F1/40
    • H02M3/1584H02M2003/1586
    • The present invention discloses a multi-phase switching regulator, a driver circuit of a multi-phase switching regulator, and a control method of a multi-phase switching regulator. The multi-phase switching regulator includes: at least two power stages, switching power transistors in the power stages to convert an input voltage to an output voltage according to pulse width modulation (PWM) signals generated by corresponding PWM controllers respectively; and a current balance circuit, generating a current balance signal according to the current of the corresponding power stage and a phase adjustment signal to averagely distribute current over the active power stages. In the present invention, the gain of the current balance circuit is adjustable, to avoid or reduce output voltage overshoot and undershoot when the phase number changes, while the current balance function is still achieved in normal operation.
    • 本发明公开了一种多相开关调节器,多相开关调节器的驱动电路以及多相开关调节器的控制方法。 多相开关稳压器包括:至少两个功率级,功率级中的开关功率晶体管,分别根据相应PWM控制器产生的脉冲宽度调制(PWM)信号将输入电压转换成输出电压; 以及电流平衡电路,根据相应功率级的电流产生电流平衡信号和相位调整信号,以平均分配有功功率级上的电流。 在本发明中,电流平衡电路的增益是可调节的,以避免或减少相位数变化时的输出电压过冲和下冲,同时在正常操作中仍然实现电流平衡功能。
    • 5. 发明申请
    • Multi-phase switching regulator and driver circuit and control method thereof
    • 多相开关稳压器及其驱动电路及其控制方法
    • US20120176105A1
    • 2012-07-12
    • US13134035
    • 2011-05-26
    • Yu-Wei ChangYuan-Huang ChengTing-Hung WangChia-Jung LeeChung-Sheng Cheng
    • Yu-Wei ChangYuan-Huang ChengTing-Hung WangChia-Jung LeeChung-Sheng Cheng
    • G05F1/10
    • H02M3/1584H02M2003/1586
    • The present invention discloses a multi-phase switching regulator, a driver circuit of a multi-phase switching regulator, and a control method of a multi-phase switching regulator. The multi-phase switching regulator includes: at least two power stages, switching power transistors in the power stages to convert an input voltage to an output voltage according to pulse width modulation (PWM) signals generated by corresponding PWM controllers respectively; and a current balance circuit, generating a current balance signal according to the current of the corresponding power stage and a phase adjustment signal to averagely distribute current over the active power stages. In the present invention, the gain of the current balance circuit is adjustable, to avoid or reduce output voltage overshoot and undershoot when the phase number changes, while the current balance function is still achieved in normal operation.
    • 本发明公开了一种多相开关调节器,多相开关调节器的驱动电路以及多相开关调节器的控制方法。 多相开关稳压器包括:至少两个功率级,功率级中的开关功率晶体管,分别根据相应PWM控制器产生的脉冲宽度调制(PWM)信号将输入电压转换成输出电压; 以及电流平衡电路,根据相应功率级的电流产生电流平衡信号和相位调整信号,以平均分配有功功率级上的电流。 在本发明中,电流平衡电路的增益是可调节的,以避免或减少相位数变化时的输出电压过冲和下冲,同时在正常操作中仍然实现电流平衡功能。
    • 7. 发明申请
    • Multi-phase switching regulator and driver circuit and control method thereof
    • 多相开关稳压器及其驱动电路及其控制方法
    • US20120086418A1
    • 2012-04-12
    • US12931189
    • 2011-01-27
    • Chia-Jung LeeYuan-Huang ChengTing-Hung Wang
    • Chia-Jung LeeYuan-Huang ChengTing-Hung Wang
    • G05F1/00
    • H02M3/1584H02M1/36
    • The present invention discloses a multi-phase switching regulator, and a driver circuit and a control method thereof. The multi-phase switching regulator includes: at least two power stages each having at least one switching power transistor which switches to convert a common input voltage to a common output voltage according to PWM signals generated by corresponding PWM controllers, respectively; a feedback circuit, generating a feedback signal according to the output voltage; a current balance circuit, generating a current balance signal according to the currents of the power stages and a phase off signal to distribute current loading among the active power stages; and a soft shutdown control circuit, generating a soft shutdown control signal according to the phase off signal to gradually change the duty of a PWM signal corresponding to a power stage, so as to softly shut down the power stage to avoid a voltage undershoot.
    • 本发明公开了一种多相开关调节器及其驱动电路及其控制方法。 多相开关调节器包括:至少两个功率级,每个功率级具有至少一个开关功率晶体管,其分别根据相应的PWM控制器产生的PWM信号来切换公共输入电压到公共输出电压; 反馈电路,根据输出电压产生反馈信号; 电流平衡电路,根据功率级的电流产生电流平衡信号和相位关闭信号,以在有功功率级之间分配电流负载; 和软关断控制电路,根据相位关闭信号产生软关断控制信号,逐渐改变对应于功率级的PWM信号的占空比,以便软抑制功率级以避免电压下冲。