| 摘要 |
Methods, systems, and devices are described for auxiliary power with low standby power consumption. Switching power converters typically include a switching power element (e.g., a power transistor), driven by a switching controller (e.g., including a gate driver). The power output of the switching power converter may be a function of the switching signal provided by the switching controller. For example, a pulse-width modulated ("PWM") signal may be used to drive the switching power element, and the output of the switching controller may be adjusted by adjusting the frequency and/or duty cycle of the PWM signal. Embodiments implement cycle extension techniques to effectively extend a portion of the PWM signal to generate additional charge. The additional charge may be used to power an auxiliary power unit. The auxiliary power unit may then be used to drive the switching controller and/or to provide a source of power for other internal or external components. |
