A detection circuit for converting a control signal while maintaining electrical isolation between a first ground and a second ground. The detection circuit includes a first input configured to receive the control signal; a gate signal input configured to receive a gate signal; a transformer; an isolator; a rectifier; and an output electrically connected to the rectifier, the output configured to output the converted control signal. The transformer is configured to receive the control signal from the first input, transform the control signal into a transformed control signal, and output the transformed control signal. The isolator is configured to receive the gate signal from the gate signal input, and control the transformer in response to the gate signal. The rectifier is configured to receive the transformed control signal from the transformer, and convert the transformed control signal to a converted control signal.