![]() ![]() Step 2: Click on the link in the section below to download a specific demonstration circuit.Step 1: Download and install LTspice on your computer. ![]() Follow the instructions below to run the demo circuits in LTspice. These demo circuits are designed to ensure proper performance and have been reviewed by Analog Devices’ factory applications group. Select Analog Devices products also have demonstration circuits available for free download. Learn more about how to read MOSFET datasheet parameters thanks to our series of videos dedicated to "Power MOSFET datasheet parameters".LTspice provides macromodels for most of Analog Devices’ switching regulators, linear regulators, and amplifiers, as well as a library of devices for general circuit simulation. Other important parameters are intrinsic capacitances that can affect the switching times and voltage spikes, and body drain diode when device is used as power diode, like in synchronous free-wheeling operation mode. The product of R DS(on) and Q G is known as the MOSFET Figure of Merit (FOM). Q G impacts directly the efficiency (the lower, the better). Q G ( total gate charge): amount of electric charge required to the gate driver to turn on/off the device itself.BV DSS ( breakdown voltage): maximum drain-to-source voltage that the device is able to sustain when in off state.The lower is R DS(on), the lower is the conduction loss due to power dissipation when the current is flowing. R DS(on) ( on-state resistance): electrical resistance when the device is set in on state.Like many other types of semiconductor power switches, the main parameters of a MOSFET, usually available in most datasheets, are: ![]()
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