Abstract: The present invention relates to a method for preparing an alkali metal ion conductive chalcogenide-based solid electrolyte, a solid electrolyte prepared thereby, and an all-solid-state battery comprising the same.

Abstract: A PLL circuit includes a phase detector for detecting a phase error between an input and output signal of the PLL circuit and outputting a pump up and a pump down signal. A charge pump generates a charge pump signal in response to the pump up and pump down signals. A loop filter filters the charge pump signal to generate a filtered signal. A boost-up device coupled to a loop filter output terminal charges a loop filter input terminal, to expedite the filtered signal reaching a predetermined common mode voltage level. A VCO coupled to the loop filter output terminal and the phase detector generates the output signal. A common mode voltage reaching time in the lock-in time is reduced by the boost-up device charging the loop filter to expedite the filtered signal reaching the common mode voltage, when the filtered signal is lower than a predetermined detecting voltage.