Dynamically Adjustable CMOS Circuit Trip Point Control
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Solution Overview
Problem
CMOS circuits face performance issues due to fixed trip points and beta ratios, leading to undesirable output and operational failures under changing operating conditions.
Innovation Solution
A dynamically adjustable CMOS circuit is developed, featuring a network of PMOS and NMOS transistors with a Schmitt trigger inverter that adjusts beta ratios and trip points based on input signals, enabling faster switching and improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If trip points and beta ratios are fixed during manufacturing, then manufacturing precision is improved, but adaptability deteriorates
Solution Approach 1:
The patent implements dynamic adjustability of trip points and beta ratios through control circuits that can modify circuit parameters in real-time based on operating conditions, transforming a static manufactured circuit into a dynamically adaptable system that maintains optimal performance across varying conditions
Solution Approach 2:
The patent changes physical parameters (trip points and beta ratios) of the CMOS circuit dynamically through control signals that adjust transistor operating points and circuit characteristics, allowing the circuit to adapt to different operating conditions while maintaining manufacturing precision for the base configuration
2Speed
If trip points are fixed for high-speed switching, then switching speed is improved, but reliability deteriorates
Solution Approach 1:
The patent incorporates feedback mechanisms where the control circuit monitors operating conditions and dynamically adjusts trip points and beta ratios to maintain optimal switching performance, ensuring reliable operation across varying conditions while preserving high-speed switching capability
Solution Approach 2:
The patent makes the trip points dynamic rather than fixed, allowing real-time adjustment based on operating conditions to maintain both high switching speed and operational reliability by adapting to changing environmental and load conditions
3Ease of manufacture
If beta ratio is constant, then manufacturing simplicity is improved, but performance under varying conditions deteriorates
Solution Approach 1:
The patent implements dynamic beta ratio adjustment through control circuits that modify transistor operating points in real-time, allowing the circuit to optimize performance for different operating conditions while maintaining a relatively simple manufactured structure
Solution Approach 2:
The patent changes the beta ratio parameter dynamically through control signals that adjust transistor gate voltages and operating points, enabling performance optimization under varying conditions without complicating the fundamental circuit fabrication process
Data Source
AI summary
A complementary metal-oxide semiconductor (CMOS) circuit comprises an inverter, a plurality of P-type metal-oxide semiconductor (PMOS) transistors, and a plurality of N-type metal-oxide semiconductor (NMOS) transistors. The inverter receives an input signal and drives one of the plurality of PMOS transistors or the plurality of NMOS transistors. The plurality of PMOS transistors generate a pull-up signal, change a beta ratio of the CMOS circuit, and change a first trip point of the CMOS circuit to a second trip point of the CMOS circuit based on the changed beta ratio. The plurality of NMOS transistors generate a pull-down signal, change the beta ratio, and change the second trip point of the CMOS circuit to a third trip point of the CMOS circuit based on the changed beta ratio.