VOLTAGE CONTROLLED DELAY DEVICE, DIGITAL POWER CONVERTER USING THE SAME, AND DRIVING METHOD THEREOF

摘要

PURPOSE: A control voltage delay device, a digital power converter using the same, and an operating method thereof are provided to became strong against PVT(Process, Voltage, Temperature) transformation without the constraint of area, resolution, and consumption power. CONSTITUTION: A control voltage delay device(100) generates a reference clock signal and an output clock signal for controlling an output voltage of a digital power converter. The control voltage delay device includes a first operating unit(110) generating the output clock signal and a second operating unit(120) generating the reference clock signal. A phase detecting unit(300) generates a phase detection signal(PDS). A digital filter(400) generates a digital pulse width control signal controlling the duty of a power switch(S) according to the phase detection signal. A DPWM(600) generates a gate signal(VG) for turning off the power switch. [Reference numerals] (320) Converting unit; (410) Differentiator; (420) Integrator; (500) Clock generator; (AA) Load