High-side driver for providing an off-state in case of ground loss
AssigneeTexas Instruments Deutschland GmbH
InventorsBernhard Wicht, Michael Wendt
Life of this patent
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Abstract
An electronic device has circuitry for driving a high side switch. The circuitry has a high side driver including a first switch and a second switch being coupled to each other by a driver output node. The driver output node is adapted to be coupled to a control input of the high side switch. The first switch is coupled to a driver high voltage level and the second switch is coupled to ground for alternately pulling the driver output node to either the driver high voltage level or to ground so as to turn the high side switch on and off. A diode element is coupled between the driver output node and the second switch in a forward direction from the driver output node to the switch.
Claims4
An electronic device having circuitry for driving a high side switch (MN2), the circuitry comprising:
- a high side driver (HS) including a first switch (MP0) and a second switch (MN1) being coupled to each other by a driver output node (N1) adapted to be coupled to a control input of the high side switch (MN2);
- the first switch (MP0) being coupled to a driver high voltage level (VCP) and the second switch (MN1) being coupled to ground for alternately pulling the driver output node (N1) to either the driver high voltage level (VCP) or to ground so as to turn the high side switch (MN2) on and off, wherein
- a diode element (D) is coupled between the driver output node (N1) and the second switch (MN1) in a forward direction from the driver output node (N1) to the switch (MN1).
Dependencies are inferred from the claim text.