Semiconductor Apparatus Temperature Compensation Reference Voltage
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Solution Overview
Problem
Semiconductor apparatuses malfunction due to variations in transistor characteristics caused by temperature changes, despite constant internal voltages, leading to inconsistent current flow between the drain and source.
Innovation Solution
A semiconductor apparatus that includes a temperature code generation circuit, control code generation circuit, and reference voltage generation circuit to adjust internal voltages based on temperature measurements before and after heating, ensuring stable operation by generating and comparing temperature codes and adjusting reference voltages accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If internal voltages are kept constant, then voltage stability is maintained, but transistor characteristics vary with temperature causing malfunction
Solution Approach 1:
The reference voltage is made dynamically adjustable based on temperature conditions. The voltage adjustment block modifies the reference voltage level in response to temperature codes, allowing the system to adapt to temperature changes rather than maintaining a fixed voltage level, thus resolving the contradiction between voltage stability and temperature-dependent reliability
Solution Approach 2:
The system changes the voltage parameter (reference voltage level) in response to temperature variations. By detecting temperature through the temperature measurement block and adjusting the reference voltage accordingly, the system maintains proper transistor operation across different temperature conditions while resolving the conflict between constant voltage and temperature-adaptive operation
2Reliability
If voltage levels are adjusted according to temperature, then transistor reliability improves, but system complexity increases
Solution Approach 1:
The system replaces complex continuous voltage regulation mechanisms with a simplified digital approach using temperature codes and discrete voltage adjustment levels. The temperature measurement block generates digital codes that directly control the voltage adjustment block, substituting a potentially complex analog control system with a more manageable digital control scheme
Solution Approach 2:
The temperature measurement block and code generation circuits serve as intermediaries between the temperature sensor and the voltage adjustment mechanism. These intermediary blocks translate temperature information into standardized codes that the voltage adjustment block can process, simplifying the overall system architecture while maintaining reliability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively maintains stable transistor operation by adjusting internal voltages in response to temperature changes, reducing the likelihood of malfunction and ensuring consistent performance across varying temperatures.
Implementation Method 1
a heater that generates heat for an enable period of the heating enable signal
Data Source
AI summary
A semiconductor apparatus includes a control block that generates a first control signal, a second control signal, and a heating enable signal in response to an enable signal and a heating control signal, a temperature measurement block that generates a temperature code corresponding to temperature in response to the first and second control signals, a heater that generates heat while the heating enable signal is being enabled, a code latch block that stores the temperature code in response to the first and second control signals, and outputs a first code and a second code, a control code generation circuit that generates a signal by performing an operation on the first and second codes, and generates a control code by comparing the signal with a preset code, and a reference voltage generation circuit configured to change a voltage level of a reference voltage in response to the control code.