Simulating High-Side Bootstrap Circuits With LTSpice
1 min read
Summary
For those new to the world of electronics, LTSpice is a tool that allows the simulation of analog circuits and is essential to understanding circuit behaviour.
Bootstrap circuits are necessary to drive a high-side switching transistor and can be simulated using LTSpice, with videos available to help explain the theory and practical implementation.
However, in practical circuits, it is more common to use a MOSFET driver IC, which provides high and low-side FET drivers with peak currents of up to 3A for fast switching, shoot-through prevention, and galvanic isolation.
For higher supply voltages, more expensive P-channel MOSFETs or high-side drivers are required, and NFETs remain cheaper and more efficient in terms of on-resistance.
