Current output stage having automatic active-passive switching

The invention relates to a current output stage (100) comprising an input (IN), an output (OUT) for connecting to an input of a unit (200) to be supplied with current, a control stage (T1, T2, Z1), which sets the output current (Iout), and an energy supply stage (Uv;Uv,−Uv), which can provide energy...

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Bibliographic Details
Main Author Meier, Heinz-Wilhelm
Format Patent
LanguageEnglish
Published 17.04.2018
Subjects
CONTROLLING
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:The invention relates to a current output stage (100) comprising an input (IN), an output (OUT) for connecting to an input of a unit (200) to be supplied with current, a control stage (T1, T2, Z1), which sets the output current (Iout), and an energy supply stage (Uv;Uv,−Uv), which can provide energy for the output current (Iout). The current output stage (100) comprises a first transistor (T1), which controls the output current in a closed-loop in the passive operating mode, and the current output stage (100) contains a second transistor (T2; T2, T3), which controls the output current (Iout) in a closed-loop in the active operating mode, wherein the first transistor (T1) and the second transistor (T2; T2, T3) is controlled by a control stage OP1) in an open loop, and wherein in the active operating mode the energy supply stage (Uv;Uv,−Uv) is controlled in an open loop such that same provides energy for the output current (Iout).
Bibliography:Application Number: US201113879368