Introduction to Gate Drivers

Gate Drive Transformer Pulse Response Characteristics

A gate drive transformer must reproduce the shape of an input pulse as accurately as possible at its secondary terminals. The performance of a gate drive transformer’s pulse characteristics is specified in terms of its effect on the shape of the pulse input current/voltage. It is important that the transformer must reproduce the shape...

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Introduction to Gate Drivers

Gate Drive Transformers and Circuits

A gate drive transformer is optimized for transmitting rectangular electrical pulses with fast rise and fall times to activate or deactivate a switching device. Despite various floating channel MOSFET/IGBT driver ICs being available, a transformer-coupled gate drive is still the better option to use for high power applications. Despite various floating channel MOSFET/IGBT driver ICs being...

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12 Steps for Designing SMPS Transformers

Designing magnetic components for SMPS can be challenging due to the increasing demands of modern electronics designs. Following these 12 steps can help engineers navigate the challenges and ensure a successful project. The following parameters are essential for designing SMPS magnetic components: Input voltage range Output voltage Output power or output current Switching frequency...

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Phase Shifted Full-Bridge components

SMPS: Phase-Shifted Full-Bridge Converters

Phase-shifted full-bridge (PSFB) converters are used to step down high DC voltages and to provide isolation in medium to high power applications (> 1000 W). PSFB converters are similar to conventional full-bridge DC-DC converters, but with a phase shifting control. The phase shift full-bridge converter can achieve soft switching by phase-shifting the gate signals...

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symmetrical-examples

SMPS: Symmetrical Isolated Converters

The previous article in our series on switched-mode power supplies (SMPS) covered asymmetrical isolated converter topologies. Now we will investigate several symmetrical isolated converters along with their advantages and disadvantages for different applications. Symmetrical converters require an even number of switches. The full available flux swing in both quadrants of the B-H loop is used, thus...

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asymmetrical-examples

SMPS: Asymmetrical Isolated Converters

The previous article in our series on switched-mode power supplies (SMPS) covered non-isolated converter topologies. Now we will investigate isolated converters, starting with asymmetrical converter topologies. Isolated Converter Overview Isolated topologies in switched-mode power supplies use a high frequency transformer as an isolator between the switching element and output. Depending on the transformer turns ratio,...

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SMPS : Non-Isolated Converters

Our previous article on switched-mode power supplies covered the basics of power conversion and outlined the key differences between switched-mode and linear power supplies. We also established that there are two main categories of SMPS topologies: non-isolated converters and isolated converters. In this article, we will take a closer look at non-isolated converter topologies. Buck Converter (Step-down) As...

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