Circuit arrangement for converting an input voltage into a first output voltage and into a second output voltage, ultrasonic sensor and ultrasonic control device

摘要

The present invention relates to a circuit arrangement (5) for converting an input voltage (UE) into a first output voltage (UA1) and into a second output voltage (UA2), a circuit arrangement (5) and an ultrasonic control device. The circuit arrangement (5) comprises an input voltage connection (UE), a first output voltage connection (UA1), a second output voltage connection (UA2), an inductance (L), a first voltage-direction-dependent switch (D1), a first capacitor (C1), a second capacitor (C2), a first switch (S1) and a first evaluation unit (10), the first evaluation unit (10) being set up on the basis of the circuit arrangement (5), the first switch (S1) in accordance with a first predefined pulse duty factor and a to open and close the first predefined frequency alternately in order to charge the first capacitor (C1) at the first output voltage connection (UA1) on the basis of the input voltage (UE) in such a way that a first consumer (V1) at the first output voltage connection (UA1) receives the first output voltage (UA1) is provided, wherein the first output voltage (UA1) is lower than the input voltage (UE) and the second n to charge the capacitor (C2) at the second output voltage connection (UA2) in such a way that a second output voltage (UA2) which is higher than the input voltage (UE) is provided to a second consumer (V2) at the second output voltage connection (UA2).