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AssigneeSGS-ATES Deutschland Halbleiter Bauelemente GmbH
InventorJoachim G. Melbert
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A series voltage regulator having a regulating transistor (T.sub.1) arranged with its emitter-to-collector path in a series arm of the regulator, the base of which is controlled via a control transistor (T.sub.2) by a first differential amplifier (V) which compares a reference voltage (U.sub.REF) with a voltage proportional to the voltage (U.sub.2) of the regulator output. A differential circuit (V.sub.2) which compares the collector-to-emitter voltage of the regulating transistor (T.sub.1) with an auxiliary voltage (U.sub.3) is provided, the output of which is followed by a current limiting circuit (T.sub.3) which acts upon control transistor (T.sub.2). The auxiliary voltage (U.sub.3) is larger than the collector-to-emitter voltage of the regulating transistor (T.sub.1) which occurs at the beginning of the saturation state of the regulating transistor. The current limiting circuit (T.sub.3) limits the current delivered by the control transistor (T.sub.2) to the base of the regulating transistor (T.sub.1) as soon as the differential circuit (V.sub.2) detects a drop in the collector-to-emitter voltage of the regulating transistor (T.sub.1) to the auxiliary voltage (U.sub.3). The auxiliary voltage (U.sub.3) may be controlled proportionally to the regulator output current.
A series voltage regulator comprising a normally non-saturated regulating transistor with its emitter-to-collector path arranged in a series arm of the regulator, the base of said regulating transistor being controlled via a control transistor by a first differential amplifier having first and second input ports, the first differential amplifier comparing a reference voltage which is supplied to the first input port with a voltage which is supplied to the second input port and which is proportional to the output voltage of the regulator, wherein the reference voltage supplied to the first input port of the first differential amplifier is controlled as a function of the difference between the input voltage and the output voltage of the series voltage regulator.
A series voltage regulator for transferring electric power from a battery to a load, comprising a normally non-saturated regulating transistor with its emitter-to-collector path arranged in a series arm of the regulator, the base of said regulating transistor being controlled via a control transistor by a first differential amplifier having first and second input ports, the first differential amplifier comparing a reference voltage which is supplied to the first input port with a voltage which is supplied to the second input port and which is proportional to the output voltage of the regulator, wherein the reference voltage supplied to the first input port of the first differential amplifier is controlled as a function of the difference between the input voltage and the output voltage of the series voltage regulator.
A series voltage regulator having first and second input ports for receiving electrical power from a power source and having first and second output ports for providing regulated electrical power to a load, comprising:
Dependencies are inferred from the claim text.