Tactile Actuator Drive Switching for Faster Voltage Response
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Solution Overview
Problem
The existing voltage regulator circuits face difficulties in achieving sufficient responsiveness due to the time required to determine the on/off states of the initiation circuit and current output circuit, leading to challenges in obtaining quick control over the output voltage.
Innovation Solution
The proposed solution includes a load, a first switching element, and a second switching element, where the drive circuit drives the first switching element based on a comparison between a load signal and a reference signal, and the second switching element switches the signal level to improve responsiveness by controlling the drive control signal between two levels, allowing for immediate switching of the first switching element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the initiation circuit and current output circuit are connected in series and controlled to prevent simultaneous on/off states, then through current is prevented from flowing, but the time required to determine on/off states increases and responsiveness deteriorates
Solution Approach 1:
The patent divides the control function into two separate circuits: an initiation circuit that controls the gate voltage of the output transistor, and a current output circuit that adjusts the output voltage. By segmenting these functions and controlling them independently with separate control signals, the system can switch states more rapidly without the timing delays associated with series-connected control, while still preventing through-current by ensuring proper sequencing of the independent control signals.
2Stability of the object's composition
If the initiation circuit maintains the second voltage at a third voltage to keep the output transistor off before initiation, then the output transistor is properly initialized, but time is consumed in determining the on/off state transitions
Solution Approach 1:
The initiation circuit performs preliminary action by pre-charging the gate voltage of the output transistor to a predetermined voltage level before the normal operation begins. This preliminary charging ensures that when the output transistor needs to switch on, it can do so immediately without waiting for gradual voltage buildup, thereby reducing the time for state determination while maintaining stable initialization.
Data Source
AI summary
An electronic device includes a load, a first switching element, a drive circuit, and a second switching element. The first switching element is disposed on a current path connected to the load. The drive circuit drives the first switching element by using a drive control signal which is based on a comparison result between a load signal and a reference signal. The load signal is obtained by converting, into a voltage, a current flowing through the current path. The reference signal serves as a reference of an operation of the first switching element. The second switching element is capable of switching the signal level of the drive control signal between a first level, at which the first switching element is switched off, and a second level, at which the first switching element is switched on.