Intermediate Voltage Generation for Low-Voltage Devices in High-Voltage Circuits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Devices designed for lower voltage domains face operational inefficiencies and reliability issues when handling higher voltage signals, as existing intermediate voltage solutions either require additional power-consuming generators or result in suboptimal operating conditions, especially when high voltage levels are unstable.
Innovation Solution
Generating an intermediate low reference voltage by subtracting the high native voltage level from the high voltage level, allowing devices to operate in two sets with optimal voltage differences, and using the native voltage level as an intermediate voltage to maintain consistent performance across varying high voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an intermediate voltage supply at 1.8V is used to protect devices, then device protection is improved, but operating speed deteriorates because devices operate away from optimal voltage
Solution Approach 1:
The patent dynamically adjusts the intermediate voltage level based on the actual high voltage domain level. Instead of using a fixed 1.8V intermediate level, the system calculates an optimal intermediate voltage that maintains the best possible operating conditions for devices while still providing protection. This dynamic adjustment allows devices to operate closer to their optimal voltage point, improving speed while maintaining reliability.
2Speed
If an additional voltage level generator is used to provide optimal intermediate voltage, then operating speed is improved, but power consumption and area increase
Solution Approach 1:
The patent implements a self-service mechanism where the system uses its own existing voltage supplies to generate the required intermediate voltage level. By calculating the difference between the high voltage domain level and the low voltage domain level, and using this difference to establish the intermediate voltage, the system eliminates the need for external voltage level generators. This approach maintains optimal operating conditions for devices while avoiding additional power consumption and area overhead.
3Speed
If an additional voltage level generator is used to provide optimal intermediate voltage, then operating speed is improved, but device complexity increases
Solution Approach 1:
The patent makes existing voltage supplies serve multiple functions. The high voltage supply and low voltage supply not only power their respective domains but also work together to generate the intermediate voltage level needed for device protection and optimal operation. This multi-functionality eliminates the need for dedicated voltage level generators, reducing device complexity while maintaining optimal operating conditions.
4Adaptability or versatility
If the high voltage level varies, then adaptability is improved, but intermediate voltage stability deteriorates because it is derived from the high voltage supply
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors the high voltage domain level and adjusts the intermediate voltage accordingly. By calculating the intermediate voltage as the difference between the high voltage level and a reference level, and using this information to control device operation, the system maintains stable operating conditions even when the high voltage level varies. This feedback approach ensures that devices always operate at or near their optimal voltage point regardless of supply variations.
Data Source
AI summary
Circuitry, operating in a high voltage domain, including a high and low voltage inputs, and including a plurality of devices designed to operate optimally powered in a native voltage domain that is lower voltage than said high voltage domain and some devices arranged in two sets. The circuitry including a further input for receiving the high native voltage level. Each set having at least one device, a first set being arranged to receive an intermediate low reference voltage level as a low voltage level signal and the high voltage level as a high voltage level signal and the second set being arranged to receive the high native voltage level as a high voltage level signal and the low voltage level as a low voltage level signal. The intermediate low reference voltage level includes a voltage level generated by subtracting the high native voltage level from the high voltage level.