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Problem 3: (20 points) Design a suitable power converter (only the power stage) for the following...
1. to design a high efficiency d.c. to d.c. power converter with the given specifications Input v...
1. to design a high efficiency d.c. to d.c. power converter with the given specifications Input voltage Output voltage Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV min 10V max 15V nominal (regulated) 8V Define a suitable power circuit topology to meet the above specification Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the...
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.
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...
To design a high efficiency d.c., to d.c power converter with the given specifications min 10V max 15V nominal (regulated) 8V Input voltage: Output voltage: Nominal load current: 4A Inductor current...
To design a high efficiency d.c., to d.c power converter with the given specifications min 10V max 15V nominal (regulated) 8V Input voltage: Output voltage: Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV Define a suitable power circuit topology to meet the above specification? Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the output...
Problem 1: (40 points) A boost converter based power factor correction circuit needs to operate with...
Problem 1: (40 points) A boost converter based power factor correction circuit needs to operate with universal input voltage, i.e the input voltage can be either 120V (RMS)+/- 10% at 60 Hz or 240 V(RMS) +/- 10% at 50 Hz. The output voltage is regulated at 400 V DC and the maximum (average) output power is 1kW. The switching frequency is 200 kHz. (a) Calculate the value of inductance needed to keep its peak peak ripple current to be less...
Design a high efficiency d.c. to d.c. power converter with the given specifications
Question 1
Design a high efficiency d.c. to d.c. power converter with the given
specifications
Input voltage: min 10V max 15V
Output voltage: nominal (regulated) 8V
Nominal load current: 4A
Inductor current ripple:0.1A max
Switching frequency: 30 kHz
Output voltage ripple: 20 mV
Design a boost converter power stage to the following specification: Input voltage Output voltage: Output voltage...
Design a boost converter power stage to the following specification: Input voltage Output voltage: Output voltage ripple:max 20mV Load power: Switching frequency: 15kHz 110-125V 300V 1.5kW Calculate: (i) Maximum duty cycle (ii) Minimum duty cycle (iii) Average diode current (iv) Assuming the Rds(on) of the MOSFET is 0.01 Ω, and the diode forward voltage is 0.8V, calculate the approximate efficiency of the circuit. 2. A switching power supply shown in the circuit below has its switch driven by a signal...
1. (35 points) Switch mode DC DC Converters. a. (15 points) Design a flyback DC/DC power converter to the following specifications. Assume ideal components Input Voltage Output Voltage Output Powe...
1. (35 points) Switch mode DC DC Converters. a. (15 points) Design a flyback DC/DC power converter to the following specifications. Assume ideal components Input Voltage Output Voltage Output Power Switching frequency Maximum Current Ripple in the filter inductor Output ripple voltage: Continuous conduction 170 VDC 12 VDC 40 Watts 750 kHz 1.2 Amps Your answer should include a circuit diagram with each energy storage element labeled with its value. Label the transformer turns ratio.
1. (35 points) Switch mode...
A buck converter is used to have low output voltage from the high input source to...
A buck converter is used to have low output voltage from the high input source to low output voltage. The estimated power output is at 25 kW with the switching frequency of 25 kHz. Design the buck converter as by finding and following specifications consider the ripple of the output is set at 1% (i) Calculate the duty ratio of the buck converter (1 mark) (ii) Determine the minimum requirement for the inductor and the capacitor (5 marks) (iii) Determine...
Design a buck converter with the following specifications: Input voltage = 311 V Output voltage =...
Design a buck converter with the following specifications: Input voltage = 311 V Output voltage = 48 V Output voltage ripple = +/- 0.1% Maximum output current = 10 A Inductor current ripple = 5% Switching frequency = 100 kHz a) Select the inductor and the output capacitor and show a capture of the behaviour b) Calculate power losses assuming a rising time of 100 ns, a falling time of 100 ns, and Rdson = 10 mΩ. c) Calculate output...
A Buck-boost converter has an output voltage 100 V, output power 60 W and input voltage...
A Buck-boost converter has an output voltage 100 V, output power 60 W and input voltage 12 V. Switching frequency is 15 kHz. Calculate duty ratios for the switch and the diode. Find values for the inductor L and capacitor C, when the allowed output voltage ripple is ±0.15 % and the inductor current ripple is ±1 % (of the average value). If the on-time of the switch has an inaccuracy of ±50 ns, what is the new output voltage...
1. to design a high efficiency d.c. to d.c. power converter with the given specifications Input voltage Output voltage Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV min 10V max 15V nominal (regulated) 8V Define a suitable power circuit topology to meet the above specification Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the...
To design a high efficiency d.c., to d.c power converter with the given specifications min 10V max 15V nominal (regulated) 8V Input voltage: Output voltage: Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV Define a suitable power circuit topology to meet the above specification? Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the output...
Problem 1: (40 points) A boost converter based power factor correction circuit needs to operate with universal input voltage, i.e the input voltage can be either 120V (RMS)+/- 10% at 60 Hz or 240 V(RMS) +/- 10% at 50 Hz. The output voltage is regulated at 400 V DC and the maximum (average) output power is 1kW. The switching frequency is 200 kHz. (a) Calculate the value of inductance needed to keep its peak peak ripple current to be less...
Design a boost converter power stage to the following specification: Input voltage Output voltage: Output voltage ripple:max 20mV Load power: Switching frequency: 15kHz 110-125V 300V 1.5kW Calculate: (i) Maximum duty cycle (ii) Minimum duty cycle (iii) Average diode current (iv) Assuming the Rds(on) of the MOSFET is 0.01 Ω, and the diode forward voltage is 0.8V, calculate the approximate efficiency of the circuit. 2. A switching power supply shown in the circuit below has its switch driven by a signal...
1. (35 points) Switch mode DC DC Converters. a. (15 points) Design a flyback DC/DC power converter to the following specifications. Assume ideal components Input Voltage Output Voltage Output Power Switching frequency Maximum Current Ripple in the filter inductor Output ripple voltage: Continuous conduction 170 VDC 12 VDC 40 Watts 750 kHz 1.2 Amps Your answer should include a circuit diagram with each energy storage element labeled with its value. Label the transformer turns ratio.
1. (35 points) Switch mode...
A buck converter is used to have low output voltage from the high input source to low output voltage. The estimated power output is at 25 kW with the switching frequency of 25 kHz. Design the buck converter as by finding and following specifications consider the ripple of the output is set at 1% (i) Calculate the duty ratio of the buck converter (1 mark) (ii) Determine the minimum requirement for the inductor and the capacitor (5 marks) (iii) Determine...
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