For a power MOSFET,
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Microelectronics: Circuit Analysis and Design
- For the below given circuit, a step-down transformer is used with a root mean square voltage equal VRMS = 200/40 The input frequency is 120 Hertz, R= 4.2 k2, all diodes used are silicon diodes. 1) Find a) The peak Input voltage Vpin (in volts): b) The peak output voltage Vpout (in volts): c) The Average output voltage Vavg (in volts): d) The current across the load resistance( in milliampere): e) The Ripple Frequency(in Hertz): 2) a) Draw the Input and output waveform b) Name the above given circuit.arrow_forwarda) Given the choice between a MOSFE Open with for a high voltage application. State your selection with reasons. b) The parameters for the power MOSFET in the circuit shown in the Figure 1 are as follows: rise time, t₁ =2 µs; on resistance, Ros(on) = 0.202; duty cycle, D = 0.7; and switching frequency, f = 30 kHz. Determine: i. the power-loss in the on state. ii. the power-loss during the turn-on interval. Vos 100 V ID D S R₁ = 120 Figure 1 c) Draw a clearly labeled diagram of the thermal equivalent circuit of a transistor. d) The maximum junction temperature of a power transistor is T; = 150 °C and the ambient temperature is T₁ = 25 °C. If the thermal impedances are Rjc = 0.4 C/W, Rcs=0.1 °C/W, and RSA = 0.5 °C/W. Calculate, i. the maximum power dissipation. ii. the case temperature.arrow_forwardProblem 1. We have identical crystalline silicon solar cells available, with a short circuit current of 4 A and an open circuitvoltage of 0.6 V at STC. These cells are used to make a PV module with 54 cells connected in series. I. What is the open circuit voltage of the module at STC? Assume that the interconnection losses arenegligible.II. What is the short circuit current of the module at STC? III. Assume that the module does not have any bypass diodes. If the module is partially shaded and one ofthe cells is only able to produce 2 A, what will be the new short circuit current under these conditions?arrow_forward
- 2. Given the circuit a. State how each switch can be realized using transistors and/or diodes, and whether the realization requires single-quadrant, current/voltage bi-directional two quadrant switch or four quadrant switches then redraw the circuit. b. Solve the converter to determine the inductor currents, capacitor voltages and conversion ratio. Ignore all losses.arrow_forward2 V 1ΚΩ VOUT Find the following: a. Vout b. Small signal model of the diode under these conditions (Do NOT consider capacitance across the diode junction and the resistance of the semiconductor material outside the diode junction) c. Approx. peak-to-peak value of the AC component of Vout if a 1 mV RMS sinusoidal signal is added to the 2 V DC source. Given that: reverse saturation current is 1.5 x 10-14 A, ideality factor is 1.1, and the circuit is operating at 27°C.arrow_forwarda) Figure B3 shows a cross section for a Metal Oxide Semiconductor Field Effect Transistor (MOSFET) in diagrammatic form. (i) (ii) Sketch the energy band diagram for the MOSFET along the line X-Y shown in Figure B3 when bias voltages are applied such that the silicon surface is inverted. Label all important features of your sketch and state any assumptions made. Sketch a box plot showing the charges present in the structure when the silicon surface is inverted. Indicate the source of all the charges and state whether they are positive or negative. Source n+ Metal Silicon Substrate - p X dioxide Drain n*arrow_forward
- Using a positive Clamper with positive biasing voltage Circuit, with an AC voltage of Vi = 20v with a frequency of 60hz, a value of 500n for the Capacitor, a silicon diode, biased voltage voltage of 5 volts and a resistor with the value of 300 ohms. Find the current on the resistor at a simulation of 20ms in mA. Vm 2Vm R V,m Vo -Vm V, Input Waveform Output Waveform Positive Clamper with positive reference V, wwwarrow_forwardQUESTION 1 Design a high efficiency 3.3 V, 5A d.c.to d.c. power converter from a 4 to 5.5 Vdc source. The maximum allowable inductor current ripple and output voltage ripple are 0.1A and 20 mV, respectively. Assume a switching frequency of 20 kHz. a) Design a suitable converter power circuit using a MOSFET switch, showing all calculation of inductor and capacitor values and drawing a circuit diagram of the final design including component values. Indicate the peak inverse voltage and forward current rating of any diode required, and the maximum drain- source voltage of the MOSFET. b) On the Schematic diagram, draw the path of the current flow during the ON time and the OFF time. c) Describe the effect of changing the values of the inductor and the capacitor in the circuit. d) What is the effect of switching frequency in the circuit? e) Draw the schematic diagram of a circuit with the output voltage higher than the input voltage.arrow_forwardA single phase, fully controlled bridge rectifier supplies a series connected resistor- inductor load (R = 20, L = 0.02H) from 220V, 50HZ AC supply. The triggering angle of the thyristors is 60°. (Assume the circuit is ideal.) a. Sketch the circuit. b. Develop the load current expression and check the continuity of the load current. c. Sketch the load voltage and load current waveforms. d. Calculate the mean values of the load voltage and load current. e. Sketch the inductor voltage and calculate its mean value. f. Calculate the FF (form factor) and RF (ripple factor) of the load voltage.arrow_forward
- Q. 5 What will be the percentage change in SIL if 30% shunt capacitance compensation is done.arrow_forwardVoO for Ma mosfet Nn Cox ( )= Jm Alv? ,Vrw=0,7V J00NA (+) VX %3D %3D a) In uhat condition does the mosfet work ?and frnd the voltage Vx= ? M1 3V b) what is the mompmum Voo voltage and why'?arrow_forward1) the transformer turn-ratio (N1/N2) =? / 2) the PIV rating of diode =? /3) average power dissipated in diode PD =? / 4) the value of filtering capacitor (C) required to give ripple voltage Vr=0.5v is ? / 5) if each diode has rf=15 ohm and for same vm =12v, the peak secondary voltage Vsp=? / 6) if D1 is open then the average output voltage Vo(avg)=?arrow_forward
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