Multi-Voltage Actuator Signal Coupling for Synchronized Switching
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Solution Overview
Problem
In complex electronic devices, actuator signals propagated across different voltage domains often experience synchronization issues due to varying propagation delays, leading to 'shoot through' in switching devices and increased noise levels, especially when conventional level shifter circuitries result in independent signal paths with systemic delay differences.
Innovation Solution
The implementation of multi-domain coupling circuitry between signal paths in a signal network, which maintains a fixed relationship between actuator signals in different voltage domains, reduces delay differences by aligning switching times and overlapping signal paths to synchronize actuator signals across domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional level shifter circuitries are used to propagate actuator signals across different voltage domains, then the actuator signals can be delivered to devices in different voltage domains, but synchronization issues occur due to varying propagation delays causing shoot through and increased noise levels
Solution Approach 1:
The patent merges multiple independent signal paths into a coupled signal network where level shifters are shared across multiple voltage domains. This coupling ensures that actuator signals maintain fixed temporal relationships across domains, preventing shoot-through conditions while reducing noise levels through synchronized switching.
Solution Approach 2:
The patent creates equipotential relationships between different voltage domains by establishing fixed temporal relationships between actuator signals in each domain. The coupled signal network ensures that signals across domains transition in a coordinated manner, eliminating synchronization issues caused by independent path delays.
2Device complexity
If independent signal paths are used for each voltage domain, then device complexity is reduced, but delay differences between paths cause synchronization problems and increased noise
Solution Approach 1:
The patent combines previously independent signal paths into a coupled network where level shifters serve multiple domains simultaneously. This merging maintains simplicity while eliminating the harmful effects of independent path delays through coordinated signal transitions across all domains.
3Device complexity
If actuator signals are propagated without coupling circuitry, then the signal network is simpler, but switching times are not aligned causing shoot through in switching devices
Solution Approach 1:
The patent introduces coupling circuitry that merges signal paths at critical points, ensuring that switching devices across different voltage domains transition simultaneously. This merging prevents shoot-through conditions while maintaining a relatively simple overall network structure.
Solution Approach 2:
The coupling circuitry acts as an intermediary between independent signal paths, coordinating the timing of actuator signals across voltage domains. This intermediary ensures proper synchronization without requiring complete redesign of the signal network architecture.
Data Source
AI summary
Networks, methods, and circuitries are provided that propagate an actuator signal to a plurality of devices in a respective plurality of voltage domains. The network includes a first signal path disposed between an actuator signal source and a first device. The first signal path includes a first point at which the actuator signal is in a first voltage domain. A second signal path is disposed between the actuator signal source and a second device. The second signal path includes a second point at which the actuator signal is in a second voltage domain. The first voltage domain is different from, and has a fixed relationship to, the second voltage domain. A multi-domain coupling circuitry is connected to the first point and the second point. The multi-domain coupling circuitry is configured to maintain the fixed relationship between the actuator signal at the first point and the second point.