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Es werden eine elektronische Treiberschaltung und ein Ansteuerverfahren offenbart. Die Treiberschaltung weist einen Ausgang auf; einen ersten Ausgangstransistor mit einem Steuerknoten und einer Laststrecke, wobei die Laststrecke zwischen den Ausgang und einen ersten Versorgungsknoten geschaltet ist; einen Spannungsregler, der dazu ausgebildet ist, eine Spannung über der Laststrecke des ersten Ausgangstransistors zu steuern; und einen ersten Treiber, der dazu ausgebildet ist, den ersten Ausgangstransistor in Abhängigkeit von einem ersten Steuersignal anzusteuern.
Disclosed is an electronic drive circuit and a drive method. The drive circuit includes an output; a first output transistor comprising a control node and a load path, wherein the load path is coupled between the output and a first supply node; a voltage regulator configured to control a voltage across the load path of the first output transistor; and a first driver configured to drive the first output transistor based on a first control signal.
The power supply is one of the major challenges for applications like internet of things IoTs and smart home. The maintenance issue of batteries and the limited power level of energy harvesting is addressed by the integrated micro power supply presented in this paper. Connected to the 120/230 Vrms mains, which is one of the most reliable energy sources and anywhere indoor available, it provides a 3.3V DC output voltage. The micro power supply consists of a fully integrated ACDC and DCDC converter with one external low voltage SMD buffer capacitor. The micro power supply is fabricated in a low cost 0.35 μm 700 V CMOS technology and covers a die size of 7.7 mm². The use of only one external low voltage SMD capacitor, results in an extremely compact form factor. The ACDC is a direct coupled, full wave rectifier with a subsequent bipolar shunt regulator, which provides an output voltage around 17 V. The DCDC stage is a fully integrated 4:1 SC DCDC converter with an input voltage as high as 17 V and a peak efficiency of 45 %. The power supply achieves an overall output power of 3 mW, resulting in a power density of 390 μW/mm². This exceeds prior art by a factor of 11.