Invention Grant
US08421428B2 Current trigger circuit and switching power converter using the same 有权
电流触发电路和开关电源转换器使用相同

Current trigger circuit and switching power converter using the same
Abstract:
A bias voltage is compared with a voltage difference in a detecting element according to the present invention. A bias voltage unit is coupled to the detecting element, so that they have a common voltage level to avoid noises when the circuit is operating. Accordingly, the erroneous detection caused by the noise interference can be avoided. Hence, a detecting element with a low resistance, such as an MOEFET, can be used in the present invention to decrease power consumption arisen from current detection and to further increase conversion efficiency.
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