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    • 9. 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。