Parameter identification circuit and method and power supply system using same

摘要: The invention discloses a parameter identification circuit used in digital power converter. converter comprises an inductor and capacitor. inductance module capacitance module, wherein the is for acquiring according to integral value of current capacitor voltage, duty ratio starting process preset when raised current; voltage voltage. According method disclosed by invention, system does not need enter steady state, so that can be completed process. Moreover, parameters self-adaptively generated under different regulator, meets requirements set cut-off frequency as well phase position magnitude margin.