Patent ID: 8508892

Claim:
An integrated circuit, comprising circuitry of a DC-DC converter, the circuitry of the DC-DC converter including a control circuit and a switching transistor coupled between a first and second terminal of the integrated circuit the integrated circuit furthermore comprising an electrostatic discharge protection circuit, the electrostatic discharge protection circuit comprising: a high pass filter circuit having an output and having inputs coupled between the first and second terminal; a detector transistor with a control electrode coupled to the output of the high pass filter circuit and a main current channel; a chargeable circuit coupled in series with the main current channel between the first and second terminal; and a logic circuit with a logic input coupled to a node between the main current channel of the detector transistor and the chargeable circuit and a further logic input coupled to an output of the control circuit, the logic circuit having an output coupled to a control electrode of the switching transistor, the logic circuit having a logic function that makes the switching transistor conductive when the detector transistor becomes conductive.