Integrated Circuit EFUSE Power Supply Integration
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Solution Overview
Problem
Integrated circuits with electronic fuse circuits require additional power supply circuits to generate specific voltages for programming, increasing production and usage costs and pin resource usage.
Innovation Solution
An integrated circuit design incorporating a programming power supply control circuit, a voltage adjustable power supply circuit, and a power source switch circuit, which allows a single power supply circuit to power both functional circuits and the EFUSE circuit, eliminating the need for a separate EFUSE power supply circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate EFUSE power supply circuit is added to generate specific programming voltages, then the EFUSE circuit can be programmed reliably, but the device complexity and pin resource usage increase
Solution Approach 1:
The patent merges the EFUSE power supply circuit with the main IC power supply circuit, allowing a single power supply to serve both the functional circuits and the EFUSE circuit. This is achieved by integrating voltage adjustment and switching functionality within the existing power supply architecture, eliminating the need for separate power supply components and reducing pin usage.
Solution Approach 2:
The power supply circuit is designed to perform multiple functions: it provides power to both the functional circuits and the EFUSE circuit, and can adjust voltages dynamically to meet different programming requirements. This multi-functionality eliminates the need for dedicated EFUSE power supply components.
2Reliability
If a separate EFUSE power supply circuit is added, then sufficient programming voltage can be ensured, but production and usage costs increase
Solution Approach 1:
By combining the EFUSE power supply requirements with the main IC power supply, the patent reduces component count and assembly complexity, directly lowering production costs while ensuring adequate programming voltage through integrated voltage adjustment capabilities.
Solution Approach 2:
The unified power supply circuit performs multiple functions including powering functional circuits, providing programming voltages for EFUSE, and adjusting voltages as needed, thereby eliminating the need for additional expensive components and reducing overall system cost.
3Reliability
If a separate EFUSE power supply circuit is added, then EFUSE programming can be performed, but pin resources are consumed
Solution Approach 1:
The patent combines the power supply connections for the EFUSE circuit with the existing main power supply pins, eliminating the need for additional dedicated EFUSE power pins. This is achieved through internal switching and voltage adjustment circuitry that shares the existing power supply infrastructure.
Data Source
AI summary
An integrated circuit, wherein a voltage-adjustable power supply circuit (42) receives a first power supply control signal (6) output by a programming power supply control circuit (41), outputs a first voltage signal to a efuse circuit (44) by a power source switching circuit (43) and outputs the first voltage signal to other functional circuits (45) of the integrated circuit, and the efuse circuit (44) receives the first voltage signal and a first programming control signal (5) output by the programming power supply control circuit (41) and burns out a corresponding efuse therein; or the voltage adjustable power supply circuit (42) receives a second power supply control signal (6) output by the programming power supply control circuit (41) and outputs a second voltage signal to other functional circuits (45) of the integrated circuit, and the efuse circuit (44) receives a second programming control signal (5) output by the programming power supply control circuit (41) and ensures a corresponding efuse therein not to be burnt out. Compared with the integrated circuit in the prior art, which integrates the effuse circuit (44), the integrated circuit of the invention saves production cost and use cost and also saves the lead pin resources of the integrated circuit.