Output Voltage Control Circuit for Gate Drive Miniaturization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gate drive circuits face challenges in reducing chip size due to the lack of compact circuit configurations for controlling boosted voltage, making it difficult to miniaturize products that incorporate these circuits.
Innovation Solution
An output voltage control circuit that includes a detection unit to identify voltage levels and a selection unit to choose appropriate boosting voltages based on detected ranges, allowing for efficient voltage boosting without the need for an output voltage detection terminal, thereby reducing chip and product size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gate drive circuit uses a voltage boosting circuit to supply boosted voltage to the gate of an external MOS transistor, then the gate drive function is achieved, but the chip size and product size cannot be reduced
Solution Approach 1:
The voltage boosting operation is segmented into multiple discrete voltage levels (first voltage, second voltage, third voltage) corresponding to different input voltage ranges. The detection unit divides the input voltage detection into multiple ranges, and the selection unit selects appropriate boosting levels based on the detected range, enabling compact circuit implementation while maintaining reliable gate drive function across varying input conditions
Solution Approach 2:
The circuit changes the boosting parameter (boosting voltage level) based on the input voltage range detected. By adjusting the boosting amount according to different input voltage conditions (first, second, or third voltage range), the circuit achieves efficient voltage boosting with reduced chip size while maintaining the necessary gate drive reliability
2Area of stationary object
If the circuit configuration is simplified to reduce chip size, then manufacturing cost and product size are reduced, but the ability to control boosted voltage accurately deteriorates
Solution Approach 1:
The voltage control is segmented into discrete ranges with corresponding boosting levels. The detection unit divides the input voltage range into multiple segments, and the selection unit selects the appropriate boosting voltage for each segment, achieving accurate voltage control through segmented detection and selection without requiring complex continuous control circuits
Solution Approach 2:
The circuit dynamically adjusts the boosting voltage level based on the detected input voltage range. The selection unit changes the boosting amount in response to different input conditions, enabling accurate voltage control adaptation while maintaining a compact circuit structure that does not require complex continuous regulation mechanisms
Data Source
AI summary
In an embodiment, an output voltage control circuit includes a detection circuit that is connected to an input voltage terminal and configured to detect a voltage level of an input voltage received at the input voltage terminal and output one or more detection signals corresponding to a comparison of the voltage level of the input voltage to a plurality of predetermined voltage ranges. A selection circuit is connected to the detection circuit and configured to select a first voltage from among a plurality of first voltages according the one or more detection signals from the detection circuit. An output circuit is connected to the selection circuit and configured to output a second voltage by boosting the input voltage based on the first voltage selected by the selection unit.