SCDS438A January 2021 – June 2021 TMUX7219-Q1
PRODUCTION DATA
One application of the TMUX7219-Q1 is in Electric Vehicle Service Equipment (EVSE). The EVSE is a system that monitors and controls the high voltage power path from the grid to the vehicle. One key feature of an EVSE is the pilot signal wire communication support that requires a 1-kHz, ±12-V PWM signal to be transmitted down the length of the charger cable to the vehicle.
The TMUX7219-Q1 can be used to generate 1kHz ±12V PWM signal for EVSE control pilot. A 1 kHz square wave at ±12 V generated by the EVSE on the control pilot line is used to detect the presence of the vehicle, communicate the maximum allowable charging current, and control charging.
Figure 9-1 shows the TMUX7219-Q1 configured for PWM signal generation for EVSE control pilot.