A voltage doubling source circuit, a charge pump circuit and electronic equipment

Abstract

The application discloses a voltage doubling source circuit, a charge pump circuit and electronic equipment, wherein the voltage doubling source circuit uses a P-type transistor as a voltage transfer transistor, and the P-type transistor is based on an N well, and the N well can be Connect any potential higher than the ground, so the base of the P-type transistor can be directly connected to the source of the P-type transistor, avoiding the fact that the source voltage of the N-type transistor that functions as a voltage transfer is higher than that of the existing CMOS type voltage doubler source The body effect caused by the substrate voltage improves the efficiency of the transistor transfer voltage, thereby improving the overall efficiency of the voltage doubler source circuit; and by designing a suitable dynamic bias circuit for the gate of the P-type transistor, based on two-phase non-overlapping The clock controls the on and off of the first transistor, the second transistor, the third transistor and the fourth transistor in an orderly manner, and the voltage doubling source circuit can effectively avoid the current backflow problem that occurs instantaneously when the classical CMOS type voltage doubling source circuit switches.

Description

technical field [0001] The present application relates to the technical field of circuit design, and more specifically, to a voltage doubling source circuit, a charge pump circuit and electronic equipment. Background technique [0002] The voltage doubling source circuit refers to a circuit that amplifies the input voltage. Generally, the magnification factor of the voltage doubling source circuit is 2, that is, for example, the input voltage of the doubling source circuit is VDD, and the output after processing by the doubling source circuit is The voltage is 2VDD. [0003] Voltage doubling source circuits are widely used in chips of various electronic devices such as flash memory (Flash), dynamic random access memory (Dynamic Random Access Memory, DRAM), and driving circuits of liquid crystal displays. The efficiency of the voltage doubling source circuit directly affects the overall power consumption of the chip using the voltage doubling source circuit. In the existing ...

AI Technical Summary

Problems solved by technology

The efficiency of the voltage doubling source circuit directly affects the overall power consumption of the chip using the voltage doubling source circuit. In the existing voltage doubling source circuit, due to the doping type Different, the substrate of the transistor can only be grounded, so that the source voltage of the transistor is greater than the substrate voltage, which leads to serious body effect, reduces the efficiency of these transistors to transfer voltage, and then reduces the overall efficiency of the voltage doubler source circuit

Images