Gate Drive Transformer Design

Several important factors need to be considered when designing an optimized gate drive transformer gdt.

Gate drive transformer design. Gate drive transformers typically provide worse rise and fall times than other drivers but due to the resonant nature of the tesla coil this is less important than in other applications. How do i select the best coilcraft gate drive transformer for my application. Assum ing optimal values for rise time droop and overshoot the application is what discriminates the gate drive transformer from other transformers. All of our gate drive transformer products are rohs compliant and come in multiple winding configurations.

12 steps for designing gate drive transformers february 22 2019 august 11 2020 bhuvana madhaiyan sampath palaniappan gate drivers power supply smps switched mode following these 12 steps when designing gate drive transformers will ensure a long component life and optimal performance. Two of the critical components to control when designing a gate drive transformer are the leakage inductance and distributed capacitance. High isolation transformer manufacturing design. A special section deals with the gate drive requirements of the mosfets in synchronous rectifier applications.

Based on a single turn he calculated the core area needed and then went looking for a core. The final design would be greatly simplified if he could meet the requirements using single turn windings. Typical gate drive transformers are designed using ferrite cores to reduce cost. Coilcraft has pre designed off the shelf gate drive transformers in a range of volt time product ratings isolation ratings and turns ratios.

For more information see the overview for mosfet and igbt gate drivers product page. The leakage inductance must be low. In order to design a good gate drive transformer several things must be necessary. This article discusses several gdt design considerations as well as ideal applications for their use.

Some common schematics and their corresponding turns ratios are listed in fig. A gate drive transformer isolates the controlling gate drive circuit from the switch node when driving the mosfet gate and may also scale the output voltage via an appropriate primary to secondary turns ratio. The basic gate drive transformer has several design variations each of which is determined by the specific application. Gate drive transformers gts are a key component in many modern electronic systems.

The basic gate drive transformer has several design varia. Coilcraft s off the shelf gate drive transformers simplify the design of your gate drive circuit and shorten design cycle. Some of the common core packages are ee eer etd and efd. Procedure for ground referenced and high side gate drive circuits ac coupled and transformer isolated solutions are described in great details.