Voltage conversion device and method

Abstract

A voltage conversion device and a method capable of adjusting a voltage conversion rate based on an input voltage are provided. The voltage conversion device includes a charge pump circuit, an operating voltage generation module, and a processing module. The charge pump circuit converts the input voltage into an output voltage based on an operating voltage and a clock signal, and the voltage conversion rate of the charge pump circuit is dynamically adjustable. The operating voltage generation module is connected to the output voltage, and includes a Zener diode, and generates the operating voltage based on a conduction state of the Zener diode. The processing module is connected to the operating voltage generation module, detects a first current flowing through the Zener diode, and adjusts the voltage conversion rate of the charge pump circuit based on the first current.

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