Why are power supplies isolated?
Why use isolated Power Supplies? Isolated power supplies provide a clear barrier across which dangerous voltages won’t pass. This provides safety. The disadvantage is low efficiencies and the package size is bigger than a non-isolated power supply due to the transformer that is needed for isolation.
What are isolated power supplies?
An isolated power supply has a power output that is electrically independent of its power input. That is to say that there is no connection between the power input and the power output.
How do isolated power supplies work?
An isolated power supply uses an isolation transformer to provide galvanic isolation between the input and output sections. Power is only transferred between the coils via induction. This keeps anything downstream of the transformer protected from high voltage/current on the input side, or, in other words, ‘isolated. ‘
What are isolated gate drivers for MOSFETs and IGBTs?
Isolated Gate Drivers. ST offers the STGAP series of isolated gate drivers for MOSFETs and IGBTs that provide galvanic isolation between the input section, which connects to the control part of the system, and the MOSFET or IGBT being driven.
How are isolated gate driving solutions increase power density?
AN_1909_PL52_1910_201256 Isolated gate driving solutions Increasing power density and robustness with isolated gate driver ICs Authors: Dr. Diogo Varajao Carmen Menditti Matrisciano About this document Scope and purpose This application note presents isolated gate driving solutions to increase the system efficiency, power density
How are isolated gate drivers used in pulse transformers?
Increasing power density and robustness with isolated gate driver ICs Introduction 1.2Galvanic isolation in modern SMPS Pulse transformers have been widely used to provide galvanic isolation between controller and power switches by isolating the command signals from the LS gate driver.
Can a gate driver be reinforced with an isolator?
However, besides being a bulky solution, it has other operating limitations related to the saturation of the core. By an isolator element into the gate driver, utilizing for example the Infineon’s Coreless Transformer (CT) technology as shown in Figure 2, it is possible to produce functional and reinforced isolated gate driver ICs.