Charge Pump System With Delayed Enabling Control
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Solution Overview
Problem
Conventional charge pump systems exhibit high power consumption during the start-up process due to the simultaneous initiation of the clock oscillating unit and charge pump circuit, leading to unstable clock signals and increased power usage.
Innovation Solution
The introduction of first and second enabling control units that delay the start-up signal to generate oscillating and charge pump enabling signals only after the reference voltage and clock signal have stabilized, ensuring the charge pump circuit operates under stable frequency conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the clock oscillating unit and charge pump circuit are started simultaneously, then the system can quickly respond to start-up signals, but power consumption increases and clock signal stability decreases
Solution Approach 1:
The patent applies preliminary action by enabling the clock oscillating unit before the charge pump circuit. The enabling control unit generates an enabling signal that first activates the clock oscillating unit to produce a stable clock signal, and only after the charge pump circuit is ready does it activate the charge pump circuit. This sequencing reduces power consumption while maintaining quick response.
2Speed
If the clock oscillating unit and charge pump circuit are started simultaneously, then the system can quickly respond to start-up signals, but clock signal stability decreases
Solution Approach 1:
The patent enables the clock oscillating unit in advance before activating the charge pump circuit. The enabling control unit sequences the activation so that the clock oscillating unit starts first and generates a stable clock signal, ensuring that when the charge pump circuit begins operation, the clock signal is already stable, thus avoiding instability caused by simultaneous start-up.
3Use of energy by moving object
If delaying signals is introduced to sequence operations, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The patent introduces an enabling control unit as an intermediary between the start-up signal and the clock oscillating unit/charge pump circuit. This control unit sequences the activation by generating enabling signals at appropriate times, reducing power consumption while managing complexity through a centralized control mechanism rather than distributed complex timing logic.
Data Source
AI summary
Charge pump system and memory are provided. The system includes: a first enabling control unit, adapted to delay at least one start-up signal of the system to obtain and output an oscillating enabling signal after receiving the at least one start-up signal and a voltage boosting enabling signal; a second enabling control unit, adapted to delay the oscillating enabling signal to obtain and output a charge pump enabling signal after receiving the oscillating enabling signal and the voltage boosting enabling signal; a clock oscillating unit, adapted to generate a clock signal after receiving the oscillating enabling signal; and at least one charge pump cell, adapted to output a boosting voltage after receiving the charge pump enabling signal and the clock signal, obtain the voltage boosting enabling signal based on the boosting voltage, and output the voltage boosting enabling signal. Power consumption of the system in a start-up process is reduced.