Solid state switch

摘要

An intake air heating system for an internal combustion engine is disclosed and includes an electric heater that heats the intake air and a control module that switches a voltage to the electric heater based on a control signal. The control module includes a gate drive module that includes a bootstrap charge pump module and generates a gate drive signal based on the control signal and that is referenced to the voltage. The control module also includes a power module that switches the power to the electric heater based on the gate drive signal.

主权项

1. An intake air heating system for an internal combustion engine, the system comprising:
an electric heater that heats the intake air; and a control module that switches a first voltage to the electric heater based on a control signal, the control module comprising
a gate drive module that includes a bootstrap charge pump module, the bootstrap charge pump module generating a bootstrap voltage that is greater than the first voltage, the gate drive module generating a gate drive signal based on the control signal and the bootstrap voltage, the gate drive signal being greater than the first voltage; anda power module that selectively connects the first voltage to the electric heater based on the gate drive signal.