Integrated Drive Circuit with Pin-Efficient Adjustable Switching
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Solution Overview
Problem
There is a need for an integrated drive circuit that can provide adjustable drive characteristics for transistor devices with a minimum number of input and output pins, capable of handling various load types in automotive, industrial, and consumer electronic applications.
Innovation Solution
The electronic circuit includes a first input pin for receiving an enable signal and operation parameter information, a second input pin for receiving a second input signal, and an output pin, with a control circuit generating a drive signal based on both inputs. The output signal's timing and parameters are dependent on the drive signal, allowing for adjustment of the transistor device's switching speed by modifying the output current and voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the number of input and output pins is reduced to minimum, then the device complexity is reduced, but the adaptability for handling various load types and adjustable drive characteristics is limited
Solution Approach 1:
The first input pin is designed to receive multiple types of information (enable information and operation parameter information) through signal encoding, allowing it to serve multiple functions. The control circuit interprets different signal states to configure different drive characteristics, making the circuit adaptable to various load types without requiring additional pins for each function.
Solution Approach 2:
The circuit adjusts drive characteristics by changing operational parameters such as current level and voltage level based on the operation parameter information received. The control circuit modifies these parameters dynamically to optimize switching speed and reduce voltage spikes for different load conditions, achieving adaptability through parameter variation rather than structural changes.
2Productivity
If the switching speed of transistor device is increased, then the productivity is improved, but the voltage spikes across the load circuit increase
Solution Approach 1:
The control circuit dynamically adjusts the drive signal characteristics based on the operation parameter information. It can modify the rise time and fall time of the drive signal, as well as the current level, to achieve optimal switching speed while controlling voltage spikes. This dynamic adjustment allows the circuit to adapt to different load conditions and prevent harmful voltage transients.
Solution Approach 2:
The control circuit is configured to generate drive signals with controlled edges and current limiting based on the received operation parameter information. By pre-configuring the drive signal characteristics before switching occurs, the circuit prevents excessive voltage spikes from occurring in the first place, cushioning against harmful effects before they manifest.
Data Source
AI summary
An electronic circuit includes a first input pin configured to receive a first input signal that includes an enable information and at least one operation parameter information, a second input pin configured to receive a second input signal, an output pin, a control circuit configured to generate a drive signal based on the first input signal and the second input signal, an output circuit configured to generate an output signal at the output pin, the enable information includes an enabled state and a disabled state, the control circuit is configured to generate the drive signal in the enabled state and to turn to the electronic circuit off in the disabled state, the at least one operation parameter information includes information about an operational parameter of the output signal, and the output circuit is configured to use the at least one operation parameter information to change the operational parameter of the output signal.