Mitsubishi electric corporation (20240340006). DRIVE CIRCUIT simplified abstract
Contents
DRIVE CIRCUIT
Organization Name
mitsubishi electric corporation
Inventor(s)
DRIVE CIRCUIT - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240340006 titled 'DRIVE CIRCUIT
The abstract describes a gate driver IC that includes switching elements to drive an IGBT, a comparator that outputs an alarm signal when the potential of a shunt resistor connected to the IGBT is equal to or higher than a certain threshold, a delay circuit that generates a trigger signal after the alarm signal is activated, and a controller that manages the switching elements.
- The gate driver IC has switching elements in the upper arm consisting of PMOS connected to the same voltage source, and in the lower arm consisting of NMOS.
- The comparator triggers an alarm signal when the potential of the shunt resistor reaches a certain level, indicating a potential fault condition.
- The delay circuit ensures that the trigger signal is only generated after the alarm signal has been activated, providing a controlled response to potential issues.
- The controller turns off the PMOS when the alarm signal is active and turns on the NMOS when the trigger signal is generated, effectively managing the operation of the switching elements.
Potential Applications: - Industrial motor control systems - Power inverters - Renewable energy systems
Problems Solved: - Efficient and safe operation of IGBTs - Early detection of potential faults in the system
Benefits: - Improved system reliability - Enhanced safety features - Optimal performance of IGBTs
Commercial Applications: - Manufacturers of industrial equipment - Power electronics companies - Renewable energy system integrators
Questions about the technology: 1. How does the delay circuit ensure the proper timing of the trigger signal? 2. What are the specific advantages of using PMOS and NMOS in the upper and lower arms, respectively?
Frequently Updated Research: - Ongoing developments in gate driver IC technology - Advances in IGBT control systems and safety mechanisms
Original Abstract Submitted
a gate driver ic includes a plurality of switching elements that drives an igbt; a comparator that outputs an alarm signal in a case where a potential of a shunt resistor connected between an emitter terminal of the igbt and a ground is equal to or higher than a vth; a delay circuit that outputs a trigger signal after the comparator starts outputting the alarm signal; and a controller that controls on and off of the plurality of switching elements. the switching elements of an upper arm include pmoss connected to a same voltage source. the switching elements of a lower arm include nmoss. the controller turns off the pmos when the alarm signal is output, and turns on the nmos when the trigger signal is output.
