The LMG3100 evaluation module is a compact, easy-to-use power stage with an external PWM signal. The board can be configured as a buck converter, boost converter, or other converter topology using a half bridge. Because this is an open-loop board with an external PWM signal, do not use to evaluate transient response. The device can be used to evaluate the performance of the LMG3100 as a hard-switched converter to sample measurements such as efficiency, switching speed and dv/dt (slew rate). The EVM features two LMG3100 power modules, each with one 100 V, 1.7-mΩ GaN FET driven by a GaN FET gate driver. The evaluation module can deliver up to 40 A of current (limited by saturation current of inductor) if the application includes adequate thermal management (monitor case temperature and verify adequate airflow is present if required). The thermal management considerations include forced air, heat sink, and lower operating frequency to minimize the power dissipation in the module.