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A new driving circuit for cascode devices performing optimal control of the storage time

A new driving circuit for cascode devices performing optimal control of the storage time,10.1109/IAS.2005.1518499,Gastroenterology,S. Musumeci,R. Paga

A new driving circuit for cascode devices performing optimal control of the storage time   (Citations: 3)
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In this paper several driving circuits allowing the optimal feeding of the base of a cascode device are presented. More traditional driving circuits suitable for a cascode device are efficient as long as the collector current is high and quasi constant. However in certain applications such as PFCs. where the collector current changes between zero and higher values, these driving circuits show a considerable drawback, which namely is the over-saturation of the cascode at low values of the collector current. In turn, this means a large charge in the collector and base regions of the cascode that consequently determines an increase of the device storage time. Aiming to face such a problem, a driving circuit that ensures proportional base-voltage has been proposed in order to avoid unsuitable increase of the device storage time. In other words the circuit guarantees an adequate saturation of the cascode in on-state condition and performs an excellent rejection of the voltage supply disturbances along with a high insensitivity to the parametric spreads of the drive components. The new driving circuit that implements a linear control of the base-voltage is suitable for integration.
Journal: Gastroenterology , vol. 2, pp. 1130-1137 Vol. , 2005
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    • ...The base driving circuit, in case of utilization of the cascode device, needs an accurate analysis [9]...
    • ...In this case the design of the driving base current is related to the maximum value of the collector current, and the switching performances are not optimized [9]...

    F. Chimentoet al. A forward converter with a monolithic cascode device: Design and exper...

    • ...For all these reasons, the driving circuit of ESBT is set as described in fig.8 [5]...

    V. Eneaet al. The ESBT® (Emitter-Switched Bipolar Transistor): a new monolithic powe...

    • ...In recent years a new high voltage (up to 1700 V) monolithic cascode device has been introduced in the power switch scenario [1, 2]. The new devices show attractive dynamic characteristics and several interesting applications have been presented in literature [3, 4]. The cascode devices work in switching conditions through a peculiar technique (the open emitter turn off), and their forward conduction voltage is lower than the one of IGBT ...
    • ...In case of converter applications having the load current that is with a sinusoidal shape at low frequency, the overdrive of the bipolar part may be avoided by a dedicated driver circuit [4], thus controlling the device storage time...
    • ...In this case the design of the driving base current is related to the maximum value of the collector current, and the switching performances are not optimized [4]...

    F. Chimentoet al. Experimental Investigation of Monolithic Cascode Devices in Inverter L...

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