Charge pump circuit and memory

Abstract

The invention provides a charge pump circuit and a memory. The charge pump circuit comprises a charge pump unit, a clock oscillator, a first partial voltage unit and a voltage comparer and further comprises a second partial voltage unit. The output end of the charge pump unit is connected with the output end of the charge pump circuit. The clock oscillator is suitable for providing a drive clock signal for the charge pump unit. The first input end of the first partial voltage unit is connected with the output end of the charge pump unit, the second input end of the first partial voltage unit is grounded, and the first partial voltage unit is suitable for outputting a first partial voltage. A reference voltage and the first partial voltage are input into the first input end and the second input end of the voltage comparer respectively, the voltage comparer is suitable for outputting a first comparison result which is used for controlling the clock oscillator to output the drive clock signal. The first input end of the second partial voltage unit is connected with a power source, the second input end of the second partial voltage unit is grounded, and the second partial voltage unit is suitable for dividing a power voltage so that the reference voltage can be output. The charge pump circuit has a low quiescent current, and the standby power consumption of the memory can be reduced.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a charge pump circuit and a memory. Background technique [0002] With the development of electronic information technology, low power consumption design and application of memory products play an important role in electronic systems. A charge pump is a switched capacitor voltage converter with high conversion efficiency and simple peripheral circuits. It is widely used in modern power management circuits and is very suitable for portable applications and memories. [0003] A charge pump, also known as a switched capacitor voltage converter, can include a reference circuit, a comparison circuit, a conversion circuit, and a control circuit. The voltage boost is realized through switch arrays, oscillators, logic circuits, and comparison circuits, and capacitors are used to store energy. The charge pump can use a pulse frequency modulation scheme to generate charge only whe...

AI Technical Summary

Problems solved by technology

The larger the current Ibd will cause the quiescent current of the charge pump circuit 100 to be larger, so that the standby power consumption of the memory or the portable device integrated with the charge pump circuit 100 increases

[0005] Therefore, the prior art is faced with the problem that the standby current of the charge pump circuit is large and uncontrollable

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