Current supply circuit and method for supplying current to a load
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a current supply circuit and a method for supplying current to a load. The supply circuit comprises:
- an input (IN) for feeding a desired value signal (S1) and a load terminal (N1) for connecting a load (Z) and providing a current (IL) through the load, said current being dependent on the desired value signal (S1),
- an activatable and deactivatable current regulating arrangement (10), which is connected to the output terminal and to which the desired value signal (S1) and a current measurement signal (S2) dependent on the load current (IL) are fed and which, in the activated state, brings about a regulated load current (IL) through the load (Z) dependent on the desired value signal (S1),
- an activatable and deactivatable adjustable current source arrangement (20), which is connected to the output terminal (N1) and, in the activated state, brings about a current (IL) through the load (Z) dependent on the desired value signal,
- a comparator circuit (30), to which the desired value signal (S1) and a limit value signal (S3) are fed and which activates either the current regulating arrangement (10) or the current source arrangement (20) depending on a comparison of the desired value signal (S1) with the limit value signal.
9 Citations
33 Claims
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1-13. -13. (canceled)
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14. A current supply circuit, comprising:
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an input operably connected to receive a first value signal;
a load terminal operably connected to provide a first current through the load, the first current dependent on the first value signal;
a selectively activatable current regulator, the current regulator operably coupled to receive the first value signal and, based on the first value signal, cause the first current to be provided through the load when the current regulator is activated;
a selectively activatable adjustable current source, the adjustable current source operably coupled to receive the first value signal and, based on the first value signal, cause the first current to be provided through the load when the adjustable current source is activated;
a comparator circuit operably coupled to receive the first value signal and a second value signal, the comparator circuit operable to generate a comparison of the first value signal and the second value signal, the comparator circuit further operable to cause selective activation of one of the current regulator or the adjustable current source based on the comparison. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for supplying a load with a first current dependent on a first value signal, comprising:
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a) employing a selectively activatable current regulator, the current regulator operably coupled to receive the first value signal and, based on the first value signal, cause the first current to be provided through the load when the current regulator is activated;
b) employing a selectively activatable adjustable current source, the adjustable current source operably coupled to receive the first value signal and, based on the first value signal, cause the first current to be provided through the load when the adjustable current source is activated; and
c) selectively activating one of the current regulator or the adjustable current source based at least in part on a comparison of a second value signal with the first value signal. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
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Specification