Opto isolated gate driver

The integrated circuit consists of eight pins. The pin configuration detail in tabular is mentioned below:. The optocoupler is embedded with Under Voltage Protection with hysteresis to avoid brownout. It also has a 15kV common-mode rejection to terminate common-mode signals. In the schematic, a Pulse generator is connected to the infrared LED along with two ohms resistors. The pulse generator will produce digital rectangular signals whereas these resistors protect the IR LED and also provide control to switching of the device.

AC induction motors are common in such applications, and invariably, the insulated gate bipolar transistors IGBTs used in the power stages to drive them. Protecting humans who operate heavy machinery from electric shock is of primary importance when designing motor drives, followed by efficiency, size and cost.

Although IGBTs can handle the high voltages and currents needed to drive motors, they do not provide safety isolation to protect against shock. The important task of providing safety isolation in the system is entrusted to the gate drivers that drive the IGBTs. Opto isolated gate drivers have been used with great success to drive IGBTs and provide galvanic safety isolation. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.

The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Related 0. High pulse fidelity architecture enables motor power efficiency to meet new required efficiency levels, and superior timing performance stability reduces voltage distortion, as well as harmonic and output power content on solar inverters.

Existing Solutions Limitations Latch-Up When Glitches Go Beyond the Supply Voltage Rely on junction isolation which can breakdown and cause latch-up Latch-up related shoot through best avoided with galvanic isolation.