Regulator-Controlled Charge Pump Voltage for Efficient Boosting
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Solution Overview
Problem
Existing booster circuits in nonvolatile memory devices suffer from low power efficiency due to the regulation of input voltage to a constant level, which is higher than necessary, leading to inefficient voltage boosting.
Innovation Solution
A regulator circuit adjusts the input voltage based on external voltage value information, allowing the charge pump circuit to optimize the number of stages for voltage boosting, thereby improving power efficiency by minimizing the voltage drop and enhancing the input voltage to the charge pump circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the regulator circuit regulates the input voltage to a constant level, then the voltage input to the charge pump circuit is stabilized, but the power efficiency of the booster circuit deteriorates due to excessive voltage drop
Solution Approach 1:
The regulator circuit dynamically adjusts the input voltage to the charge pump circuit based on the number of boosting stages, rather than maintaining a fixed constant voltage. This dynamic adjustment optimizes the voltage drop across the regulator, improving power efficiency while maintaining sufficient voltage stability for proper operation
Solution Approach 2:
The system changes the voltage parameter based on the charge pump configuration. By detecting the number of boosting stages and adjusting the input voltage accordingly, the system optimizes the balance between voltage stability and power efficiency, reducing unnecessary voltage drop when fewer stages are used
2Loss of energy
If the regulator circuit reduces the input voltage to minimize voltage drop, then the power efficiency improves, but the voltage stability deteriorates
Solution Approach 1:
The regulator circuit incorporates feedback mechanisms that monitor the charge pump output and adjust the input voltage accordingly. This feedback ensures that voltage stability is maintained at the charge pump input while optimizing the voltage drop to improve power efficiency
Solution Approach 2:
The system dynamically adjusts the regulation voltage based on real-time operating conditions and charge pump stage configuration, achieving both power efficiency and voltage stability through adaptive control rather than fixed regulation
3Power
If the charge pump circuit uses more boosting stages, then the output voltage increases, but the power consumption increases due to higher operation current
Solution Approach 1:
The system optimizes the operating parameters by adjusting the input voltage to the charge pump based on the number of stages. By providing higher input voltage when fewer stages are used, the system achieves the required output voltage with lower current, reducing power consumption while maintaining high output voltage capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances power efficiency by optimizing the voltage boosting process, resulting in higher output voltages with reduced power consumption and improved current efficiency.
Implementation Method 1
a charge pump circuit configured to receive the regulated voltage as an input voltage, boost the input voltage, and output a boosted voltage
Data Source
AI summary
A semiconductor device includes a regulator circuit, a charge pump circuit, and a control circuit. The regulator circuit is configured to regulate a voltage input from outside and output a regulated voltage. The charge pump circuit is configured to receive the regulated voltage as an input voltage, boost the input voltage, and output a boosted voltage. The control circuit is configured to cause the regulator circuit to vary a voltage level of the regulated voltage based on voltage value information about the voltage input from the outside.