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热词
    • 7. 发明授权
    • EMI suppressing regulator
    • EMI抑制调节器
    • US07696740B2
    • 2010-04-13
    • US11972585
    • 2008-01-10
    • Junfeng ZhouWim Dehaene
    • Junfeng ZhouWim Dehaene
    • G05F1/40
    • G05F1/56
    • A regulator circuit receives a power supply and provides a regulated power supply output suitable for integrated circuitry. It has a controllable current source circuit, a controller and a capacitor, such that an output of the controllable current source circuit can provide a lower frequency current part of the regulated power supply output, and the capacitor can supply a higher frequency current part of the regulated power supply output. The controllable current source circuit is controlled according to feedback from the regulated power supply output, and to restrict a rate of change of the output of the controllable current source circuit. The amount of EMI noise caused by high rate of change of current in power supply lines to the regulator circuit can be reduced. This can be done more efficiently or using a smaller capacitor than known arrangements.
    • 调节器电路接收电源并提供适合于集成电路的稳压电源输出。 它具有可控电流源电路,控制器和电容器,使得可控电流源电路的输出可以提供稳压电源输出的较低频率电流部分,并且电容器可以提供更高频率的电流部分 稳压电源输出。 可控电流源电路根据来自稳压电源输出的反馈进行控制,并限制可控电流源电路输出的变化率。 可以减少由电源线向调节器电路的高电流变化引起的EMI噪声的量。 这可以比已知布置更有效地使用或使用较小的电容器。