Back to results
US 9,541,932 B2Granted
Monitoring current in power switch devices
AssigneeInfineon Technologies AG
InventorChristian Heiling
Life of this patent
Estimating the term…
Abstract
In one example, a method includes generating, by a main switching element of a device, a load current; generating, by a regulation loop of the device, a sense current proportional to the load current; directly converting, by an analog-to-digital converter (ADC) of the device, the sense current into a digital sense current value; and outputting, by the device and to an external device, a digital representation of the load current based on the digital sense current value.
Claims15
A method comprising:
- generating, by a main switching element of a device, a load current;
- generating, by a regulation loop of the device, a sense current proportional to the load current;
- directly converting, by an analog-to-digital converter (ADC) of the device, the sense current into a digital sense current value, wherein the regulation loop comprises a chopper amplifier and is operated in synchronization with the ADC;
- and
- outputting by the device, to an external device, a digital representation of the load current based on the digital sense current value.
2 more elements
A power switching device comprising:
- a main switching element configured to generate a load current;
- a regulation loop configured to generate a sense current proportional to the load current the regulation look comprising a chopper amplifier;
- an analog-to-digital converter (ADC) configured to directly convert the sense current into a digital sense current value;
- and
- a controller configured to output a digital representation of the load current based on the digital sense current value to an external device, the controller configured to operate the regulation loop and the ADC in synchronization.
2 more elements
A power switching device comprising:
- means for generating a load current;
- means for generating a sense current proportional to the load current;
- means for directly converting the sense current into a digital sense current value;
- means for operating the means for generating the sense current in synchronization with the means for directly converting the sense current into a digital sense current value;
- and
- means for outputting, to an external device, a digital representation of the load current based on the digital sense current value.
3 more elements
Dependencies are inferred from the claim text.