Patent ID: 7099127

Claim:
A voltage converter with a high-side short-circuit protection during a power on period, the power on period separated from a normal operating period by an input voltage provided by a high-voltage power supply reaching a first threshold, the voltage converter comprising: an output node for outputting an output voltage; a high-side transistor connected between the high-voltage power supply and an output node; a low-side transistor connected between the output node and a reference potential; a driver operable during the power on period to detect the input and output voltages and responsive to the input voltage being below the first threshold and above a second threshold and the output voltage reaching a third threshold during the power on period turning on the low-side transistor and turning off the high-voltage power supply, said driver operable after said power on period to switch the high-side and low-side transistors in accordance with a predetermined output voltage; and a controller coupled to the driver and providing thereto a signal after the power on period to switch the high-side and low-side transistors.