2. Assume the switching transition has a negligible impact on the conduction time and there is...
Q3 A MOSFET is used as a low-side switch to control a 15 2 resistive load from a 24 V DC supply. The MOSFET has Rps,on = 0.2 and fon foff= 40 ns. [2] (a) Draw a suitable circuit. (b) Calculate both the drain current ip and drain-source voltage vps when the MOSFET is off and when it is on. [6] (c) Calculate the power dissipated in the load and in the MOSFET while they switched on. are [4] (d)...
+ VDS Consider the Buck DC-to-DC converter shown above. Assume it is operated at a switching frequency, f 25 KHz, with a duty cycle, D- 0.4 a) Given the sketch of the inductor current, i(t), shown below, sketch the waveforms for the input current, (t), the output current, i(t), the diode current, ip(), and the capacitor current, ict).Also, compute their average, RMS and peak values. (Note: Some useful formulas are provided on the last page) 10 5 t (s) (b)...
Please show equations used . Thanks of2 Question 2 A controlled static switch has an "ON" forward voltage drop of 1.5V. Its forward leakage current in the "OFF" state is 2mA. ft is operated with a switching frequency of 10 KHz and a duty cycle of 50%. Neglect switching transition times. Determine the peak and average power dissipation in the switch
Please answer all the parts of the question clearly and fully! Thank you! Numerical Answers: (b) (0.0 A, 24 V), (approximately 1.6 A, 0.32 V) (c) 38.4 W, 0.5 W (e) 0.26 W + 1.5 mW SECTION B: Attempt any Two) questions 150 marks total! Q3 A MOSFET is used as a low-side switch to control a 15 2 resistive load from a 24 supply. The MOSFET has RDSan VDC 0.2 ? and ton-tof-40 ns. (a) Draw a suitable circuit....
Given: A MOSFET is used in a switching power-pole found in Fig. 2-4a of the text. The operating conditions are as follows: Vin 35V, 6 A, the switching frequency fs 300 kHz, and the duty ratio d 0.4 a) Consider the diode in the power pole. Assuming an offset voltage forward bias model of the free-wheeling diode in which VM 1.2 V, calculate the average forward power loss in the diode HINT: Consider Eq. 2A-1 b) In the diode reverse...
A MOSFET and diode is used in a circuit shown in figure. The operating conditions are as follows: Input Voltage = VIN = 42 V, Io = 5A. Switching frequency fs = 400 kHz, Duty-cycle = D = 0.3. Diode Forward Voltage drop = 0.7V. Diode Peak Reverse Recovery Current = IRRM = 2.5 A. ON-state resistance of the MOSFET is RDS (on) = 25 mΩ. VGG as a step voltage between 0V and 10 V. MOSFET timings – Td...
Assist ne please Question 3 NAME: The circuit shown below contains two switches which open and close perfectly out of phase with one another (only one is open at any given time, and once one closes the other immediately opens, and vice-versa). The switches alternate at a frequency of 10kHz, and each switch spends 50% of the time open and 50% of the time closed (ie, each switch is open for 100 microseconds and then closed for 100 microseconds). The...
( Q2) Marks 14+14+6 In Fig 2 L1 mH and R-0.001 2 Vac 60 V. Square wave switching is used with switching frequency of 300 Hz and 50% duty cycle. Assume ideal switches and ideal diodes. Switches S1, S2. S3 and S4 are IGBTs/MOSFETs and Diode D and D2, D3 and D4 are antiparallel body diodes of these devices.. At steady state Sketch the gate signal for S1, VAN and o. For each region, indicate the conducting devices, by clearly...
2. a) Suppose the input to the following BJT switching cri is perd and duty cycle, D, varies between 0.2 and 0.5. Also, assume that the circuit is operating rectangeil i tngiw in steady state snl The switch needs to be designed such that the BJT is driven to saturation in the worst case scenario. First alent circuit model when the switch is closed and determine the maximum collector ( max. Then use the information provided in the following Table...
Please answer 2 and 1. Assignment No.6 10mH, C-20μF, an 1. A boost converter as the following parameters: V,-20V, L Find the current spec of the inductor for continuous current mode (Max an Min current) -20 2. Switching frequency is 50 KHz and conduction duty cycle is 0.6 a. b. Calculate the output voltage and the ripple voltage An array has been formed with three modules in a string and two strings in parallel. The overall characteristic of the array...