Power MOSFET driver having auxiliary current source
AssigneeSiemens Aktiengesellschaft
InventorHeinz Zitta
Life of this patent
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Abstract
An assembly has an MOS power transistor with an output circuit and an input circuit, a load connected in series with the output circuit of the MOS power transistor, and a control stage for controlling the input circuit of the MOS power transistor. A circuit configuration for triggering the MOS power transistor includes a constant current source and a switchable auxiliary current source connected parallel to the constant current source for feeding the control stage. The auxiliary current source is turned off at a predetermined period of time after an onset of a control event for the MOS power transistor.
Claims9
In an assembly having an MOS power transistor with an output circuit and an input circuit, a load connected in series with the output circuit of the MOS power transistor, and a control stage for controlling the input circuit of the MOS power transistor, a circuit configuration for triggering the MOS power transistor, comprising:
- a constant current source and a switchable auxiliary current source connected parallel to said constant current source for feeding the control stage, said auxiliary current source being turned off at a predetermined period of time after an onset of a control event for the MOS power transistor.
Dependencies are inferred from the claim text.