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Silicon carbide (SiC) trench MOSFET half-bridge and full-bridge power modules with hybrid integrated gate drivers on aluminium nitride (AlN) substrate were designed with electro-thermal co-simulation and soldered on an aluminium heatsink, achieving 0.3 K/W junction-to-heatsink thermal resistance. A 2 kW single-stage PV-inverter with active energy-buffer was built around the modules, achieving a weighted...
This paper presents a control strategy for a single-phase photovoltaic inverter, using a parallel active buffer circuit. The aim is to reduce the volume demand of the necessary capacitance for filtering the twice line frequency pulsating power. The pulsating power is stored in an additional buffer capacitor, which is decoupled from the input voltage by an active buffer circuit. Therefore a high voltage...
A highly integrated synchronous buck converter with a predictive dead time control for input voltages ${ > } 18\,\text{V}$ with 10 MHz switching frequency is presented. A high resolution dead time of ${\sim} 125\,\text{ps}$ allows to reduce dead time dependent losses without requiring body diode conduction to evaluate the dead time. High resolution is achieved by frequency compensated sampling...
An integrated synchronous buck converter with a high resolution dead time control for input voltages up to 48V and 10MHz switching frequency is presented. The benefit of an enhanced dead time control at light loads to enable zero voltage switching at both the high-side and low-side switch at low output load is studied. This way, compact multi-MHz DCDC converters can be implemented at high efficiency...
This paper presents an integrated synchronous buck converter for input voltages >12V with 10MHz switching frequency. The converter comprises a predictive dead time control with frequency compensated sampling of the switching node which does not require body diode forward conduction. A high dead time resolution of 125ps is achieved by a differential delay chain with 8-bit resolution. This way, the...
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