With electrical power supplies playing an important role in the operation of aircraft systems and sub-systems, flight and ground crews need health state awareness and prediction tools that accurately diagnose faults, predict failures, and project remaining life of these onboard power supplies. Among onboard power supplies, switch-mode power supplies are commonly used where their weight, size, a...

This paper proposes a novel single-input sampling instance control circuit used in primary-side controller of Switch Mode Power Supplies (SMPS) without optical-coupler and secondary feedback control circuit. The novel control circuit is based on the idea determining the sampling instance of current switching cycle by the duration of the voltage pulse at the auxiliary wingding during the previou...

Switch mode power supplies as a mass produced article leave room for optimization especially at the voluminous magnetic components. Hereby planar component designs can reduce the overall height of the power supply and give it a more compact design. Since cores are available in standard sizes the optimal winding layout has to be found. Due to increased parasitic capacitance interleaving is not a...

ABSTRACT This application report discusses a UCD91xx-based digital controller design for a high-frequency dc-dc switching power supply. Starting with a dc-dc buck converter power stage and a given set of performance specifications, different control blocks and parameters, used as in the analog control design approach, are reviewed prior to the digital controller design. The control loop is then...

Sub-harmonic phenomena become a critical issue as properties of the power grid change. In this paper we propose a generic architecture to detect and suppress these sub-harmonics automatically in a robust way. Therefore different algorithms to analyse the signals from the power grid, like wavelet-and prony analysis, are used and extended to rate and incorporate signal quality. The results of the...

This paper we proposed advanced burst mode control technique to reduce the standby power consumption of the switch mode power supply (SMPS). To reduce the standby power consumption, most of the converter use burst mode or skip mode control technique. However Conventional standby mode control techniques have some problems such as audible noise and poor regulation. In proposed techniques, basical...

This paper proposes an ASIC CMOS for sliding mode control (direct power one) applied to switched reluctance aerogenerators. The topology of the circuit is designed in order to carry out, in the most optimal way, the mathematical function which processing directly the power error and supply the turn-off angle to the power system converter. The specifications and simulation performance are in clo...

Introduction At the heart of automotive design is the requirement to pass Electro-Magnetic Compatibility (EMC) limits, by minimising conducted and radiated emissions and susceptibility. The use of Switched Mode Power Supplies (SMPS) is now common-place, yet a prime source of electro-magnetic emissions. Minimising these emissions is a key goal of SMPS design. Use of spread spectrum techniques is...

An increasing number of manufacturing processes rely on ultra-high speed and accuracy machines. Piezoceramic actuators are being utilized as parts of such machines. So far, only linear and switched-capacitor power supplies have been used for driving piezoceramic actuators in such applications. This paper proposes a switch-mode power supply to reduce cost and increase system efficiency. In the p...