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US 7,096,104 B2Granted
Control unit for a load
AssigneeSiemens Aktiengesellschaft
InventorHerbert Stangl
Life of this patent
Estimating the term…
Abstract
Control unit for a load, in particular for a sliding sunroof control of a vehicle, having a microprocessor and having an integrated voltage regulator for generating the supply voltage of the microprocessor from the battery voltage of an on-board battery, in which case, in order to switch on the microprocessor the latter is fed its supply voltage by means of a wake-up pulse for a predetermined switch-on duration and said supply voltage is maintained as long as the microprocessor outputs trigger signals.
Claims12
A control unit for a load, said control unit comprising:
- a microprocessor,
- an integrated voltage regulator for generating the supply voltage of the microprocessor from a battery voltage of an on-board battery,
- a switching element which is arranged between the on-board battery and the voltage regulator,
- an input having wake-up capability, to which a wake-up pulse can be fed for the switch-on of the microprocessor, and which thereupon switches on the switching element for a predetermined switch-on duration by means of a control signal, as a result of which the microprocessor is fed a supply voltage by the voltage regulator for said predetermined switch-on duration, wherein the microprocessor outputs trigger signals as long as the microprocessor is fed a supply voltage and an oscillator assigned to the microprocessor generates a processor clock signal, and
- a coupling circuit, which maintains the switching state of the switching element as long as trigger signals are fed to said coupling circuit.
2 more elements
A control unit for a load, said unit comprising:
- a microprocessor comprising a first output for controlling the load and a second output for transmitting trigger signals,
- an oscillator for supplying a clock signal for the microprocessor,
- a power supply unit,
- a switching element which is arranged between the power supply and the microprocessor,
- a wake-up circuit controlling the switching element, wherein the wake-up circuit activates the switching element for a predetermined time upon receipt of an input signal, and
- a dynamic link comprising an input coupled with the second output of the microprocessor and an output for controlling the switching element.
3 more elements
Dependencies are inferred from the claim text.