Back to results
US 2005/0237689 A1Published application
Method and device for protecting an electronic component
AssigneeSiemens Aktiengesellschaft
InventorThomas Maier
Life of this patent
Estimating the term…
Abstract
A switch-off threshold of an electronic component for protecting from a temperature-specific overload is determined by comparing a parameter directly dependent on the temperature of the electrical component with a parameter indirectly dependent on the temperature of the electrical component. In this way, standard components can be used, power transistors in particular, which are monitored by an external temperature sensor.
Claims8
A method for protecting an electrical component from a temperature-specific malfunction, which comprises the steps of:
- determining a first measurement value being directly dependent on a temperature of the electronic component;
- determining a second measurement value being indirectly dependent on the temperature of the electronic component;
- comparing the first measurement value with the second measurement value;
- and
- switching on or off of the electronic component, if a result of a comparison exceeds or undershoots a predetermined threshold.
2 more elements
A device for protecting against a temperature-specific malfunction, comprising:
- an electronic component;
- a comparator receiving a first measurement value being directly dependent on a temperature of said electronic component and a second measurement value indirectly dependent on the temperature of said electronic component, said comparator outputting an output signal;
- and
- a control circuit coupled to and switching said electronic component on or off in dependence on the output signal received from said comparator.
1 more element
Dependencies are inferred from the claim text.