Patent ID: 7952332

Claim:
A voltage generator arrangement, comprising: a voltage converter, which is coupled to an output terminal and to a supply voltage terminal to which a supply voltage is provided with reference to a ground potential terminal and having a first mode of operation for a positive supply voltage and a second mode of operation for a negative supply voltage, the voltage converter providing an output voltage at the output terminal with reference to the ground potential terminal; and a polarity detection circuit, which is coupled to the supply voltage terminal and to a control input terminal of the voltage converter, for providing a first pilot signal depending on a polarity of the supply voltage, wherein the voltage converter comprises: a first inductor terminal and a second inductor terminal for coupling an inductor to the voltage converter, an output terminal of the voltage converter being coupleable to the second inductor terminal, a first switch coupling the supply terminal to the first inductor terminal, a second switch coupling the first inductor terminal to the ground potential terminal, a third switch coupling the second inductor terminal to the ground potential terminal, a fourth switch coupling the second inductor terminal to the output terminal, and a fifth switch coupling the first inductor terminal to the output terminal.