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US 8,040,654 B2Granted
Relay controller for controlling an excitation current of a relay
AssigneeInfineon Technologies AG
InventorMichael Lenz
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AssigneeInfineon Technologies AG
InventorMichael Lenz
Estimating the term…
The invention relates to a relay controller (500) for controlling an excitation current of a relay (300), wherein the relay controller (500) is designed, upon the energization of the relay (300) by means of a switch (210, 211, 221), to control the excitation current through the excitation winding (310) of the relay (300) in such a way that through the excitation winding (310) there flows firstly a pull-in current and, after a pull-in time has elapsed, through the excitation winding there flows a holding current that is lower than the pull-in current, and wherein the relay controller (500) is designed, upon the switching-off of the relay by means of the switch (210, 211, 221), to feed a commutation current that flows through the excitation winding (310) to the commutation device (400) through the first terminal (501) and through the second terminal (502) of the relay controller (500).
Relay controller for controlling an excitation current of a relay, comprising:
Relay controller according to any of the preceding claims, comprising a temperature sensor circuit comprising a temperature sensor for detecting the temperature of the relay controller.
Relay controller according to any of the preceding claims, wherein there is a first switch between the first terminal and the second terminal of the relay controller.
Relay controller according to any of the preceding claims, comprising a third terminal and comprising a voltage limiting circuit which limits the voltage between the first terminal and the third terminal.
Relay controller according to any of the preceding claims, comprising an undervoltage sensor circuit for detecting an undervoltage between the second terminal and the third terminal of the relay controller.
Relay controller according to any of the preceding claims, comprising a current source and a second switch, wherein the current source is designed to provide the holding, current and the second switch is designed to provide the pull-in current.
Relay controller according to any of the preceding claims, comprising a fourth terminal, comprising a circuit which is connected to the fourth terminal and which provides the pull-in time with a means connected to the fourth terminal.
Relay device for switching loads, comprising:
Dependencies are inferred from the claim text.