Driver Circuit Voltage Level Shifting Without Separate Shifters
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Solution Overview
Problem
Conventional semiconductor devices require additional circuitry for voltage level shifting between different voltage levels, leading to increased area consumption and power usage, which is inefficient and undesirable for smaller, lower power consumption designs.
Innovation Solution
The implementation of switching circuits coupled with driver circuits to provide a configurable power signal that transitions between voltage levels, reducing the need for individual voltage level shifters in each driver circuit and optimizing power efficiency through stepped voltage transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If voltage level shifters are added to each driver circuit to bridge voltage difference gaps, then voltage level compatibility is improved, but area consumption increases
Solution Approach 1:
The patent combines the voltage level shifting function with the driver circuit by sharing the switching circuit between them. Instead of having separate voltage level shifters and driver circuits, the same switching circuit performs both voltage level adaptation and signal driving functions, thereby reducing the overall circuit area while maintaining voltage level compatibility.
Solution Approach 2:
The switching circuit is designed to serve multiple functions: it acts as both a voltage level shifter and a driver circuit output stage. This multi-functional design eliminates the need for separate dedicated voltage level shifter circuits, reducing area consumption while providing the necessary voltage level bridging between different voltage domains.
2Adaptability or versatility
If voltage level shifters are added to each driver circuit to bridge voltage difference gaps, then voltage level compatibility is improved, but power consumption increases
Solution Approach 1:
By merging the voltage level shifting and driver functions into a single shared switching circuit, the patent eliminates redundant circuitry that would consume additional power. The shared switching circuit is controlled to perform voltage level conversion only when necessary, reducing overall power consumption compared to having always-active separate voltage level shifters.
Solution Approach 2:
The switching circuit operates periodically or on-demand based on control signals rather than continuously. The control circuit enables the switching circuit only when voltage level conversion is required, allowing the system to enter lower power states when voltage level shifting is not needed, thereby reducing average power consumption.
3Adaptability or versatility
If individual voltage level shifters are used in each driver circuit, then voltage level bridging is achieved, but circuit complexity increases
Solution Approach 1:
The patent reduces circuit complexity by merging the voltage level shifter and driver circuit into a single integrated unit. The shared switching circuit with centralized control logic replaces multiple separate voltage level shifter circuits, simplifying the overall circuit architecture while maintaining the ability to bridge voltage levels between different domains.
Solution Approach 2:
The switching circuit is designed as a universal component that can handle both voltage level conversion and signal driving tasks. This multi-functional design reduces the number of different circuit types needed in the system, simplifying design, layout, and control logic compared to having separate dedicated circuits for each function.
Data Source
AI summary
Methods and apparatuses are provided for driver circuits without voltage level shifters. An example apparatus includes a semiconductor device including a row decoder circuit that includes a driver circuit and a switching circuit. The driver circuit is configured to receive an input signal having a first logical value, a first voltage signal, and a configurable power signal. The driver circuit is further configured to provide an output signal having the first logical value based on the first signal having the first logical value. A voltage level of the input signal is based on the first voltage signal and a voltage level the output signal is based on the configurable voltage signal. The switching circuit is configured to receive the first voltage signal and a second voltage signal and to provide the configurable voltage signal having a voltage level of one of the first voltage signal or the second voltage signal.