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A device is operating at Ic = 4A & Vce = 50V. For the device to operate at Ic = 20A (Without damaging),
b Explanation: For safe operation, the values should be within the limits. P = V.I – with increase in one of the values, another value should decrease.
b
Explanation: For safe operation, the values should be within the limits. P = V.I – with increase in one of the values, another value should decrease.
See lessThe SOAs provided by the manufacturers are for
a Explanation: The manufacturer specifies the SOAs only for single pulse DC operation & a particular temperature (usually 20Degree Centigrade Scale). For actual operations, The SOA’s have to be modified using the thermal impedance charts.
a
Explanation: The manufacturer specifies the SOAs only for single pulse DC operation & a particular temperature (usually 20Degree Centigrade Scale). For actual operations, The SOA’s have to be modified using the thermal impedance charts.
See lessAs the FSOA increases, the pulse width
b Explanation: On reduced pulse width values, the devices can operated on higher voltages & currents.
b
Explanation: On reduced pulse width values, the devices can operated on higher voltages & currents.
See lessThe SOAs are plotted always on a _________ scale
c Explanation: The scale is always logarithmic, irrespective of the type of device.
c
Explanation: The scale is always logarithmic, irrespective of the type of device.
See lessThe forward safe operating area (FSOA) pertains to the operation when
b Explanation: The FSOA is for forward biased operations. The FSOA is plotted for AC as well as DC for different duty cycles. Hence, option (b) is the most appropriate choice.
b
Explanation: The FSOA is for forward biased operations. The FSOA is plotted for AC as well as DC for different duty cycles. Hence, option (b) is the most appropriate choice.
See lessFor a transistor, the safe operating area (SOA) is a plot of
c Explanation: For reliable operation the collector current & voltage must remain within the SOA curves.
c
Explanation: For reliable operation the collector current & voltage must remain within the SOA curves.
See lessAt present, the state-of-the-art semiconductor devices are begin manufactured using
d Explanation: All of the above mentioned can be used but Si-Ca has certain advantages over the other materials.
d
Explanation: All of the above mentioned can be used but Si-Ca has certain advantages over the other materials.
See lessThe body of an IGBT consists of a
a Explanation: IGBT has a p-n-p structure with fingers of n+ layers into the p layer. The p layer has the largest cross section and forms the body of the IGBT.
a
Explanation: IGBT has a p-n-p structure with fingers of n+ layers into the p layer. The p layer has the largest cross section and forms the body of the IGBT.
See lessAn IGBT is also know as
d Explanation: All of the above mentioned are alternate names of IGBTs.
d
Explanation: All of the above mentioned are alternate names of IGBTs.
See lessThe approximate equivalent circuit of an IGBT consists of
a Explanation: Gate of the MOSFET forms the gate terminal of the IGBT, the source of MOSFET is connected to the base of the BJT and drain to the collector.
a
Explanation: Gate of the MOSFET forms the gate terminal of the IGBT, the source of MOSFET is connected to the base of the BJT and drain to the collector.
See less