Slew-limited output driver circuit
AssigneeRacyics GmbH
InventorsStephan Henker, Monika Dietrich
Life of this patent
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Abstract
A slew-limited output driver circuit facilitates finding a circuitry that allows a flexible setting of the slew-rate of an integrated circuit, with only a small footprint and latency, and which allows realizing different driver modes without additional components integrated protection against ESD. A short circuit will be solved by a slew-limited output driver circuit comprising a switchable current mirror providing an output current equal to an input current, wherein the current mirror is controlled by an additional switch, which is switched in response to control signals and/or an output current level of the output driver circuit, wherein adjustable operating modes of the slew-limited output driver circuit are realized by the control signals.
Claims14
Slew-limited output driver circuit comprising two switchable current mirrors providing an output current equal to an input current, wherein the current mirrors are controlled by additional switches, which are switched by a first set of control signals in response to a second set of control signals and to an output voltage level of the output of the output driver circuit, wherein different operating modes as a voltage source mode, a current source mode, or an automatic mode of the slew-limited output driver are realized by the control signals, wherein the second set of control signals are inputted to the output driver circuit at gate nodes of additional pass transistors connected also to the first set of control signals and the output, wherein the first set of control signals are input to the output driver circuit at source or drain nodes of said pass transistors.
Dependencies are inferred from the claim text.