Current sense multi-chip module
AssigneeCalifornia Institute of Technology
InventorsGary S. Bolotin, Don J. Hunter, Malcolm L. Lias, Ben Cheng, John J. Waters, Sunant Katanyoutanant
Life of this patent
Estimating the term…
Abstract
Current sensing devices that are capable of surviving harsh ambient environment of ocean worlds, such as Jupiter and Saturn moons are disclosed. The described devices can meet 300 Krad radiation requirements and can survive at cold temperatures down to −184° C. Exemplary implementations of the constituent circuits of the devices are presented. A scheduling algorithm to perform various measurement by the disclosed current sensing devices is also described.
Claims19
A current sensing module for measuring a motor phase current, the current sensing module comprising:
- at least one sensing resistor disposed in-line with a phase of a motor;
- and
- a current sensing circuit with two input terminals coupled across the at least one sensing resistor;
- the current sensing circuit being configured to amplify a voltage across the at least one sensing resistor, thereby generating an amplified voltage,
- wherein
- the current sensing module is configured to operate at radiation levels of up to and including 300 Krad and survive temperatures down to and including −184° C.
Dependencies are inferred from the claim text.