Adjustable Charge Pump Voltage Control via Switching
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Solution Overview
Problem
Existing charge pump designs require multiple chip and substrate modifications and verification processes to produce different output voltages, leading to increased costs and inefficiencies in meeting various electronic device requirements.
Innovation Solution
A charge pump with a chip and package substrate that includes a clock generator, transistor set, change-over switch set, and control unit, allowing for adjustable output voltage generation by controlling the conduction and cutoff of transistors and capacitors, enabling the production of desired output voltages without modifying the internal circuit layout or requiring additional verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple chip and substrate modifications are made to produce different output voltages, then the charge pump can meet diverse voltage requirements, but the verification time and costs increase
Solution Approach 1:
The charge pump chip is designed with multiple transistors (M1-M9) and capacitors (C1-C8) that can be configured through different switching combinations to generate multiple output voltages (2×(VDD−Vt) to 9×(VDD−Vt)). The control unit enables a single chip to perform multiple voltage generation functions without requiring physical modifications or separate verification processes for each voltage level.
2Adaptability or versatility
If the internal circuit layout of the chip is modified to generate different output voltages, then different voltage requirements can be met, but the verification process must be repeated
Solution Approach 1:
The charge pump employs dynamic switching of transistors and capacitors controlled by a control unit to adjust output voltage. Instead of static circuit modifications, the system dynamically reconfigures the same circuit components through switching operations, allowing a single verified chip design to adapt to different voltage requirements without requiring re-verification.
3Adaptability or versatility
If different specifications of chips are used for different output voltages, then the desired voltage can be achieved, but the production cost increases
Solution Approach 1:
A single chip specification with integrated transistors M1-M9, capacitors C1-C8, and a control unit can generate multiple output voltages by switching between different circuit configurations. This eliminates the need to manufacture and verify multiple chip specifications, thereby reducing production costs while maintaining the ability to meet diverse voltage requirements.
Data Source
AI summary
A charge pump that uses a control unit of a chip to adjust the on/off status of power switches and capacitor boost switches of a change-over switch set, enabling input voltage to be boosted by selected capacitors to the desired voltage level subject to conduction and cutoff of selected transistors, and therefore a predetermined voltage level of output voltage can be provided to an internal working circuit of an electronic apparatus without changing the circuit layout of the chip and the package substrate that is packaged on the chip, and thus, the chip and the package substrate simply need to be verified once, eliminating further verification procedure and time prior to vending and saving much the cost.