Boost Voltage Circuit With Additional Pump For Low Power
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Solution Overview
Problem
Conventional boost voltage generating circuits in semiconductor devices face inefficiencies at low power supply voltages, leading to inadequate charge transfer and prolonged active cycle times due to weak driving power and insufficient voltage boosting.
Innovation Solution
Incorporating an additional pump circuit that boosts the voltage of the transfer transistor's terminal, enhancing the driving power and enabling efficient charge transfer from the boost node to the output node, even at low power supply voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional pump circuits are used at low power supply voltages, then device complexity is reduced, but driving power becomes insufficient and charge transfer becomes inadequate
Solution Approach 1:
The pump circuit is divided into a main pump circuit and an additional pump circuit, each performing specific functions. The main pump circuit handles primary voltage boosting while the additional pump circuit provides supplementary boosting at low power supply voltages, allowing the system to achieve sufficient driving power without excessive complexity.
Solution Approach 2:
The additional pump circuit is dynamically activated based on power supply voltage conditions. When the power supply voltage is low, the additional pump circuit operates to provide extra driving power; when voltage is sufficient, it remains inactive, thus adapting the circuit complexity to actual operational needs.
2Productivity
If conventional pump circuits operate at low power supply voltages, then device simplicity is maintained, but active cycle time increases due to insufficient charge transfer
Solution Approach 1:
The pump circuit is segmented into main and additional components that work together to ensure efficient charge transfer. The additional pump circuit specifically addresses the charge transfer deficiency at low voltages, enabling faster operation and reduced active cycle time.
Solution Approach 2:
The system changes operational parameters by activating different pump configurations based on power supply voltage levels. At low voltages, the additional pump circuit modifies the charge transfer characteristics to maintain efficiency, thereby reducing active cycle time despite the challenging voltage conditions.
3Power
If conventional pump circuits are used, then circuit simplicity is preserved, but voltage boosting becomes insufficient at low power supply voltages
Solution Approach 1:
The pump circuit architecture is segmented into a main pump circuit for primary voltage boosting and an additional pump circuit for supplementary boosting. This segmentation allows the system to achieve adequate voltage boosting at low power supply voltages while keeping each individual circuit module relatively simple.
Solution Approach 2:
The additional pump circuit is dynamically engaged when voltage boosting becomes insufficient at low power supply voltages. This dynamic activation provides the necessary voltage boosting capability only when needed, avoiding the complexity of a continuously active additional pump circuit.
4Productivity
If additional pump circuit is added to enhance driving power, then charge transfer efficiency improves, but device complexity increases
Solution Approach 1:
The pump circuit is segmented into functional modules (main pump circuit and additional pump circuit) that can be independently designed and optimized. This modular segmentation allows the additional pump circuit to be added with minimal impact on the overall system complexity, as each module can be implemented using standard circuit design techniques.
Solution Approach 2:
The additional pump circuit operates dynamically only when needed for enhanced charge transfer efficiency, rather than being continuously active. This dynamic operation reduces the effective complexity impact, as the additional components are utilized selectively based on operational requirements rather than being permanently engaged.
Data Source
AI summary
A boost voltage generating circuit of a semiconductor device includes a main pump circuit having a transfer transistor, the main pump circuit to boost a voltage of a boost node and to transfer charge from the boost node to an output node through the transfer transistor in response to at least one control signal, and an additional pump circuit configured to boost a voltage of a terminal of the transfer transistor.