Control unit and method for controlling passenger-protection means for a vehicle
AssigneeRobert Bosch GmbH
InventorsFalko Sievers, Hartmut Schumacher, Rainer Gschwind-Schilling, Reiner Fuerst, Carsten List
Life of this patent
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Abstract
A method and a control unit are provided for controlling a passenger-protection arrangement for a vehicle, at least one switching converter being used to convert voltage. A modifying circuit is provided for the at least one switching converter, the switching converter being disposed on an integrated circuit. The modifying circuit determines a thermal load as a function of at least one physical parameter for the integrated circuit. Rise and/or fall times of at least one output signal of the at least one switching converter are modified as a function of this thermal load.
Claims13
A control unit for controlling a passenger-protection arrangement for a vehicle, comprising:
- at least one switching converter for converting voltage, wherein the at least one switching converter is disposed on an integrated circuit;
- a modifying circuit for the at least one switching converter, the modifying circuit determining a thermal load of the integrated circuit as a function of at least one physical parameter in respect to the integrated circuit, and modifying at least one of a rise time and a fall time of at least one output signal of the switching converter as a function of the thermal load;
- wherein at least one of shorter rise times shorter fall times are selected if the thermal load is above a given threshold for the thermal load.
A control unit for controlling a passenger-protection arrangement for a vehicle, comprising:
- at least one switching converter for converting voltage, wherein the at least one switching converter is disposed on an integrated circuit;
- a modifying circuit for the at least one switching converter, the modifying circuit determining a thermal load of the integrated circuit as a function of at least one physical parameter in respect to the integrated circuit, and modifying at least one of a rise time and a fall time of at least one output signal of the switching converter as a function of the thermal load;
- wherein the at least one switching converter has at least one switching transistor which is driven by a push/pull-gate-driver circuit, the push/pull-gate-driver circuit having a first adjustable current source for a fall time of a switching-transistor voltage and a second controllable current source for a rise time of the switching-transistor voltage.
A control unit for controlling a passenger-protection arrangement for a vehicle, comprising:
- at least one switching converter for converting voltage, wherein the at least one switching converter is disposed on an integrated circuit;
- a modifying circuit for the at least one switching converter, the modifying circuit determining a thermal load of the integrated circuit as a function of at least one physical parameter in respect to the integrated circuit, and modifying at least one of a rise time and a fall time of at least one output signal of the switching converter as a function of the thermal load;
- wherein the at least one switching converter has at least one switching transistor which is driven by a push/pull-gate-driver circuit, the push/pull-gate-driver circuit having quantized push transistors for the fall time of the drain source or collector-emitter switching-transistor voltage and quantized pull transistors for the rise time of the drain source or collector-emitter switching-transistor voltage.
A method for controlling a passenger-protection arrangement for a vehicle, the method comprising:
- using at least one switching converter to convert a voltage;
- determining, using a modifying circuit for the at least one switching converter, which is disposed on an integrated circuit, in a control unit (SG), a thermal load of the integrated circuit as a function of at least one physical parameter;
- and
- modifying at least one of a rise time and a fall time of at least one output signal of the at least one switching converter as a function of the thermal load;
- wherein at least one of shorter rise times shorter fall times are selected if the thermal load is above a given threshold for the thermal load.
A method for controlling a passenger-protection arrangement for a vehicle, the method comprising:
- using at least one switching converter to convert a voltage;
- determining, using a modifying circuit for the at least one switching converter, which is disposed on an integrated circuit, in the control unit (SG), a thermal load of the integrated circuit as a function of at least one physical parameter;
- and
- modifying at least one of a rise time and a fall time of at least one output signal of the at least one switching converter as a function of the thermal load;
- wherein the at least one switching converter has at least one switching transistor which is driven by a push/pull-gate-driver circuit, the push/pull-gate-driver circuit having a first adjustable current source for a fall time of a switching-transistor voltage and a second controllable current source for a rise time of the switching-transistor voltage.
A method for controlling a passenger-protection arrangement for a vehicle, the method comprising:
- using at least one switching converter to convert a voltage;
- determining, using a modifying circuit for the at least one switching converter, which is disposed on an integrated circuit, in the control unit (SG), a thermal load of the integrated circuit as a function of at least one physical parameter;
- and
- modifying at least one of a rise time and a fall time of at least one output signal of the at least one switching converter as a function of the thermal load;
- wherein the at least one switching converter has at least one switching transistor which is driven by a push/pull-gate-driver circuit, the push/pull-gate-driver circuit having quantized push transistors for the fall time of the drain source or collector-emitter switching-transistor voltage and quantized pull transistors for the rise time of the drain source or collector-emitter switching-transistor voltage.
Dependencies are inferred from the claim text.