Problem 3:Design a buck-boost converter to meet the following specifications. Assume that the ESR of the40x106capacitor in the available type is given by ESR =2, where C is the capacitance inCFarads (this information is given so that the students do not have to refer to a capacitor datasheetto complete this design; for example, if you need to limit the ESR to be less than 0.12, based onthe design equations given in the notes, then C should be more than 400 uF for this type ofcapacitors).Vin = 10V - 14Vdc; Vo = 12Vdc; I, max = 5A; Io_min = 1Afs= 100kHz; AV, < 100mV (pk – pk)

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Answered: Problem 3: 4 Design a buck-boost…

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...

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Boost Converter Design A boost converter is required to have an output voltage of 8 V and supply a load current of 1 A. The input voltage varies from 2.7 to 4.2 V. A control circuit adjusts the duty ratio to keep the output voltage constant. Select the switching frequency. Determine a value for the inductor such that the variation in inductor current is no more than 40 percent of the average inductor current for all operating conditions. Determine a value of an ideal capacitor such that the output voltage ripple is no more than 2 percent. Determine the maximum capacitor equivalent series resistance for a 2 percent ripple.
Buck Converter Design Power supplies for telecommunications applications may require high currents at low voltages. Design a buck converter that has an input voltage of 3.3 V and an output voltageof 1.2 V. The output current varies between 4 and 6 A. The output voltage ripple mustnot exceed 2 percent. Specify the inductor value such that the peak-to-peak variation in inductor current does not exceed 40 percent of the average value. Determine the required rms current rating of the inductor and of the capacitor. Determine the maximum equivalentseries resistance of the capacitor.
A boost converter is required to have an output voltage of 8 V and supply a load current of 1 A. The input voltage varies from 2.7 to 4.2 V. A control circuit adjusts the duty ratio to keep the output voltage constant. Select the switching frequency. Determine a value for the inductor such that the variation in inductor current is no more than 40 percent of the average inductor current for all operating conditions. Determine a value of an ideal capacitor such that the output voltage ripple is no more than 2 percent. Determine the maximum capacitor equivalent series resistance for a 2 percent ripple.
Design a Cuk converter that has an input of 25V and the output of -30V. The load is 60W. Specify the duty ratio, switching frequency, inductor values and capacitor values. The maximum change in inductor currents must be 20 percent of the average currents. The ripple voltage across capacitor C1 must be less than 5 percent, and the output ripple voltage must be less than 1 percent.
A boost converter is required to have an output voltage of 8 V andsupply a load current of 1 A. The input voltage varies from 2.7 to4.2 V. A control circuit adjusts the duty cycle to keep the outputvoltage constant. If the switching frequency is 200 kHz, determine:i. a value for the inductor such that the variation in inductorcurrent is no more than 40% of the average inductor current forall operating conditions.ii. a value for the capacitor such that the output voltage ripple isno more than 2%.iii. in case the OFF period is reduced by 30% for constantfrequency operation, find the new output voltage
Design a boost converter to provide an output voltage of 36V from a 24V source. The load is 50W. The voltage ripple factor must be less than 0.5%. Specify the duty cycle ratio, switching frequency, inductor and capacitor size, and power device
4- Design a boost converter that will have an output of 60 V from a 24-V source. Design for continuous inductor current and an output ripple voltage of less than one percent. The load is a resistance of 50 2. Assume ideal components for this design. VL ooooo ip - ^
C'uk Converter Design A C'uk converter has an input of 12 V and is to have an output of - 24 V supplying a 60 W load. Select the duty ratio, the switching frequency, the inductor sizes such that the change in inductor currents is no more than 12 percent of the average inductor current, the output ripple voltage is no more than 1.5 percent, and the ripple voltage across C1 is no more than 3 percent.
-Design a buck converter that has an output of 12 V from an input of 18 V. The output power is 10 W. The output voltage ripple must be no more than 100 mV p-p. Specify the duty ratio, switching frequency, and inductor and capacitor values. Design for continuous inductor current.
The buck converter with resistive load has the input voltage of 30[V], the output voltage of 10 [V] (constant), and the switching frequency of 30 [kHz]. If the output average power is 25[W], then determine the size of the inductor such that the minimum inductor current is 25 % of the average inductor current.
2. For the below figure - a) Derive the output and minimize the output function using Karnaugh map b) Draw the wave form of output if B
R +Vcc -Vcc C Vout R R a. Quantify how the resistors and the capacitor influence the output voltage of the circuit, Vout. What are the upper and lower limits of Vc? b. Howlong does it take for the capacitor to be charged from minimum to maximum voltage and vice versa?

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