DEPLOYMENT CIRCUIT FOR A PYROTECHNIC DEVICE, CORRESPONDING INTEGRATED CIRCUIT, VEHICLE AND METHOD

According to an embodiment, a deployment circuit for a pyrotechnic device comprises terminals couplable to the pyrotechnic device, and a driver circuit comprising an electronic switch and a current limiter configured to selectively energize the pyrotechnic device. A control circuit drives the driver circuit as a function of a fire request signal. When the fire request signal is de-asserted, the control circuit obtains a resistance value and determines whether the resistance value falls between first and second thresholds. When the fire request signal is asserted, the control circuit starts a deployment cycle and monitors a time duration where current exceeds a current threshold. After stopping the deployment cycle, the control circuit obtains a second resistance value and determines whether the monitored time exceeds a time threshold and whether the second resistance value exceeds a third threshold. The control circuit signals correct deployment when both conditions are satisfied.