A continous-current mode boost converter has an output ripple voltage less than0.5% when the input voltage is 14 V and the output voltage is 40 V. The load is aresistance of 50 Q and the inductor has an inductance L = 120 uH; the switchingfrequency is 25 kHz. By analyzing the parameters of the changes from Q3(a),(b)(i) Determine the new duty ratio.(ii) Determine the new maximum and minimum inductor currents which gives acontinous current mode.(iii) Calculate the new capacitance value for the capacitor. (a)A conventional buck converter has the following parameters:Vs = 24 VD= 0.7L = 150 µHC= 200 µFR = 20 Qfsw = 25 kHz(i) Sketch and label the equivalent circuit of the buck converter.(ii) Calculate the output voltage.(iii) Determine the maximum and minimum of the inductor ripple currents.(iv) Determine the output voltage ripple by referring to the output voltage.(v) Sketch and label waveforms of inductor voltage, inductor current andcapacitor current in the same y-axis.

Since you have asked multiple questions in a single request, we will be answering only the 1st…

a) A conventional buck converter has the following parameters: Vs = 24 V D= 0.7 L = 150 µH C = 200 µF R = 20 Q fsw = 25 kHz %3D (i) Sketch and label the equivalent circuit of the buck converter. (ii) Calculate the output voltage. (iii) Determine the maximum and minimum of the inductor ripple currents. (iv) Determine the output voltage ripple by referring to the output voltage. (v) Sketch and label waveforms of inductor voltage, inductor current and capacitor current in the same y-axis.

a) A conventional buck converter has the following parameters: Vs = 24 V D= 0.7 L = 150 µH C = 200 µF R = 20 Q fsw = 25 kHz %3D (i) Sketch and label the equivalent circuit of the buck converter. (ii) Calculate the output voltage. (iii) Determine the maximum and minimum of the inductor ripple currents. (iv) Determine the output voltage ripple by referring to the output voltage. (v) Sketch and label waveforms of inductor voltage, inductor current and capacitor current in the same y-axis.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

what is the difference of MOSFET and Diode in Boost Converter. Can you also sight an example?
A thyristor half-wave controlled converter has a supply voltage of 240V at 50Hz and a load resistance of 100 ohms. What are the average values of load voltage and current when firing delay angle is; 1. 140 degrees. 2. 30 degrees.
for the above boost converter, what is the max voltage stress on the MOSFET and diode? what is the output voltage peak to peak ripple?
1) AC power in a load can be controlled by using a. Two SCR's in parallel opposition b. Two SCR's in series c. Three SCR's in series d. Four SCR's in series 2) The advantage of using free - wheeling diode in half controlled bridge converter is that a. There is always a path for the ac current independent of the ac line b. There is always a path for the dc current independent of the ac line c. There is always a path for the dc current dependent of the ac line d. There is always a path for the ac current dependent of the ac line 3) Silicon controlled rectifier can be turned on a. By applying a gate pulse and turned off only when current becomes zero b. And turned off by applying gate pulse c. By applying a gate pulse and turned off by removing the gate pulse d. By making current non zero and turned off by making current zero
Drive the expression for the average output voltage of a single phase full converter and draw the waveform of output voltage. please explain in details
The positive peak value of output waveform for the given circuit diagram is.. (VPP of input is 18 V, Bias voltage is 3 V, Diode is germanium) R: D, VIN VouUT VaAS
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.
The positive peak value of output waveform for the given circuit diagram is...... (VPP of input is 14 V, Bias voltage is 4 V, Diode is germanium) R1 I D, VIN VouT
You are tasked to look for a converter circuit design that has the specifications tabulated in Table I. The aim is to produce an output voltage of 20 V which can be used to drive a load of 120 W. The converter must operate in CCM. Table I: Design Specifications Design Parameters Input voltage Switching frequency Output current ripple Output voltage ripple Values 35 V 60 kHz 5 % 1% a) Sketch the final converter and label all parameter values b) Sketch the final operating waveforms and label all parameter values c) Determine Ve.min and Vemax- Check if the output voltage ripple matches with the design requirement.
Input voltage of a boost converter 80 V, output voltage 140 V and switchingits frequency is 20 kHz. The converter efficiency is known to be 95%.a) Continuous conduction (current) in operation when the load resistance changes between 14 - 20ohmThe lowest inductance (L) value and output that should be used to maintain the operation.the peak-to-peak value of the voltage ripple should be used to be 2% of the output voltage.Calculate the capacitor's capacity (C).
A 10-Ohm fully resistive load system will be fed from a photovoltaic (PV) module. Load (converter output) voltage 12 V DC is required. But the PV output is DC 18 Volt. Buck type DC/DC converter design is required between load and PV. For this j-converter, the inductor current must be continuous and the fluctuation rate of the load voltage must be at most 0.5%. The lowest switching frequency is 40 kHz; A) What is the lowest Capacitor value (microF) that meets the design conditions for the output capacitor ? B) What is the RMS value of the inductor current (A) ? C) What is the average value of the inductor current (A) ?D) What is the inductance value (microH) that meets the design prerequisites?E) What is the lowest inductance value to be calculated (microH) ?F) What is the operating ratio of the circuit (Duty) ?
Q3. Design a DC/DC buck converter (as shown in Figure Q3) for an input voltage of 12V and an output of 5V at 20A. Assume a switching frequency of 10kHz. Constrain the inductor ripple current to be 10% of the input current and limit the output voltage ripple to 50mVp-p. a) Explain the working mechanism of the converter by sketching equivalent circuit diagrams when the switch Q is ON and OFF, Calculate the duty cycle of the switch. Find the ripple of the inductor current. Calculate the required inductance and capacitance. Sketch the waveform of the output voltage. Is the converter works at continuous conduction mode CCM? If so, give proof of that b) c) d) e) f) g) If the load current varies between 0 and 2A, what is the value of the duty cycle range and at what operating condition? DA L C² Figure Q3 DC/DC buck converter. R