Semiconductor Chip Power Supply Redundancy via Internal Voltage Backup
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Solution Overview
Problem
Semiconductor chips face disruptions when one power supply voltage is interrupted, leading to potential operational failures due to lack of alternative power sources within the chip.
Innovation Solution
Incorporating a current supply unit with a detector and alternative supply circuit that monitors power supply voltages and switches to an alternative voltage source when the primary supply is stopped, ensuring continuous operation by using an existing power supply source without additional supplemental devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a semiconductor chip uses a single power supply voltage, then the device complexity is low, but the reliability deteriorates when the power supply is interrupted
Solution Approach 1:
The patent makes the existing second power supply circuit (originally dedicated to the second circuit block) serve dual purposes: it continues to power the second circuit block while also serving as a backup power source for the first circuit block when the first power supply voltage is interrupted. This multi-functionality approach provides redundancy without adding separate backup power supply circuits.
Solution Approach 2:
The semiconductor chip uses its own internal second power supply circuit to back up the first circuit block, eliminating the need for external supplemental power supply devices. The chip essentially powers itself during power interruptions by reallocating internal power resources.
2Reliability
If additional supplemental power supply devices are added, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent repurposes the second power supply circuit to serve multiple functions: it continues to power the second circuit block while also serving as a backup for the first circuit block. This eliminates the need for additional supplemental power supply devices while maintaining reliability.
Solution Approach 2:
The patent combines the backup power supply function with the existing second power supply circuit rather than adding a separate backup circuit. The switching mechanism merges the control of both circuit blocks into a unified power management system that automatically reallocates power resources.
3Productivity
If the first power supply voltage is interrupted, then the productivity stops, but adding alternative supply circuit increases device complexity
Solution Approach 1:
The second power supply circuit is designed to serve dual purposes: normal operation of the second circuit block and backup operation of the first circuit block. This multi-functionality enables continuous productivity during power interruptions without requiring a dedicated alternative supply circuit.
Solution Approach 2:
The alternative supply circuit is pre-configured and ready to activate immediately when the first power supply voltage is interrupted. The detector continuously monitors the first power supply voltage and the switching mechanism is pre-positioned to rapidly transfer power to the first circuit block, ensuring continuous operation without interruption.
Data Source
AI summary
A semiconductor chip includes a first circuit block configured to receive a first power supply voltage through a first power supply terminal of the semiconductor chip, a second circuit block configured to receive a second power supply voltage through a second power supply terminal of the semiconductor chip, and an alternative supply unit that is connected between the first power supply terminal and the first circuit block and receives the first power supply voltage through the first power supply terminal. The alternative supply circuit is configured to apply an alternative power supply voltage generated using the second power supply voltage to the first circuit block in response to a supply of the first power supply voltage being stopped.