Power Supply Circuit for Semiconductor Package Voltage Adaptation
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Solution Overview
Problem
Existing semiconductor integrated circuits face challenges in maintaining a stable power supply voltage when dealing with input voltages of different levels, which complicates the design of power supply circuits and increases manufacturing costs due to the need for multiple types of PCBs and packages.
Innovation Solution
A power supply circuit with a first comparator, a second comparator, a first voltage regulator, and paths for direct input voltage delivery, enabling the generation of a fixed voltage level by selectively enabling the voltage regulator based on control signals from the comparators, allowing one input voltage to bypass the regulator while converting another, thus maintaining a stable output voltage regardless of input levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a power supply circuit is designed to handle multiple different input voltage levels, then the adaptability of the semiconductor package is improved, but the device complexity and manufacturing cost increase due to requiring multiple PCB types and packages
Solution Approach 1:
The power supply circuit is designed with multiple input terminals (first input terminal for first voltage level, second input terminal for second voltage level) that can accept different voltage inputs. The circuit includes switching mechanisms (first switch and second switch) that can selectively connect different input terminals to the output terminal, enabling a single circuit to serve multiple voltage level requirements. This multi-functional design allows the same semiconductor package to work with different voltage levels without requiring different PCB types, thus improving adaptability while controlling complexity.
2Stability of the object's composition
If a voltage regulator is used to convert input voltage to a fixed output voltage, then the stability of the power supply voltage is improved, but the circuit complexity increases
Solution Approach 1:
The circuit employs dynamic switching control where the first switch and second switch can be selectively enabled or disabled based on which input terminal is active. The switching mechanism dynamically connects either the first input terminal or the second input terminal to the output terminal through the voltage regulator, allowing the circuit to adapt its configuration based on the input voltage level. This dynamic operation enables stable voltage regulation while keeping the circuit structure relatively simple by using straightforward switching logic rather than complex regulation mechanisms for each voltage level.
Data Source
AI summary
A power supply circuit includes a first comparator, a second comparator, a first voltage regulator, an output terminal, a first path and a second path. The first comparator compares a first input voltage with a first reference voltage to generate a first control signal. The second comparator compares a second input voltage with the first reference voltage to generate a second control signal. A voltage level of the second input voltage is different from a voltage level of the first input voltage. The first voltage regulator is selectively enabled based on the first control signal and the second control signal, and generates a first voltage based on the first input voltage. A voltage level of the first voltage is substantially the same as the voltage level of the second input voltage. The output terminal is configured to output one of the second input voltage and the first voltage as a power supply voltage. The first path directly provides the first input voltage to the first voltage regulator. The second path directly provides the second input voltage to the output terminal. The second input voltage bypasses the first voltage.