The given converterhas the following requirements: Vin: 250V Vout: 50V regulated Load power: 200W Switching frequency: 100kHz Max. output ripple: 20mV
(a) Differentiate the difference and advantage of the synchronous buck converter with a typical buck converter circuit.
(b) Sketch the waveforms of the gate drive voltages G1 and G2 assuming a duty cycle of 25% and a maximum gate drive voltage of 10V. How would you prevent the two MOSFET to turn on simultaneously.
(c) Calculate L1 and C1, stating all necessary design criteria (e.g. value of duty cycle at the required output voltage).
(d) Describe the circuit if a capacitor is connected across the input of the synchronous buck converter. Draw the equivalent circuit to describe the function.
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The given converterhas the following requirements: Vin: 250V Vout: 50V regulated Load power: 200W Switching frequency: 100kHz Max. output ripple: 20mV
3) The Figure shows the schematic of a Synchronous converter. The converter has the following requirements: 350V Vin: Vout 75V regulated Load power 200W Switching frequency: 750kHz Max. output ripple...
3) The Figure shows the schematic of a Synchronous converter. The converter has the following requirements: 350V Vin: Vout 75V regulated Load power 200W Switching frequency: 750kHz Max. output ripple: 30mV 01 L1 Vin LC1 you 02 Vn 1. Calculate L1 and C1 2. What is a synchronous converter? Differentiate with a typical Buck converter
3) The Figure shows the schematic of a Synchronous converter. The converter has the following requirements: 350V Vin: Vout 75V regulated Load power 200W Switching...
The following circuit is a buck-boost converter where M1 functions as a switch. a. Describe how...
The following circuit is a buck-boost converter where M1 functions as a switch. a. Describe how the converter works when M1 is switched on and off. b. Provide proof that V where D is the duty cycle controlled by the MOSFET, M1. 1-D Ignore the voltage drop across the transistor and the diode. D1 Vin C1 Gate drive circuit L1 RL c. Plot the transistor current, the inductor current, the capacitor current, and the load current as a function of...
Buck Converter Question Q3. A Buck converter is used to produce a regulated 10V, 5A DC...
Buck Converter Question
Q3. A Buck converter is used to produce a regulated 10V, 5A DC power supply from a variable DC source with an nominal input voltage of Vin = 20V±5V. The Buck converter switches at 250kHz, and operates entirely in the continuous conduction mode. The output filter capacitance is C1.0uF 3.a. Draw the circuit topology for the Buck converter. Ensure that your circuit includes the input DC source, the output load resistance, the switching devices (i.e. MOSFET and...
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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...
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3) The Figure shows the schematic of a Synchronous converter. The converter has the following requirements: 350V Vin: Vout 75V regulated Load power 200W Switching frequency: 750kHz Max. output ripple: 30mV 01 L1 Vin LC1 you 02 Vn 1. Calculate L1 and C1 2. What is a synchronous converter? Differentiate with a typical Buck converter
3) The Figure shows the schematic of a Synchronous converter. The converter has the following requirements: 350V Vin: Vout 75V regulated Load power 200W Switching...
The following circuit is a buck-boost converter where M1 functions as a switch. a. Describe how the converter works when M1 is switched on and off. b. Provide proof that V where D is the duty cycle controlled by the MOSFET, M1. 1-D Ignore the voltage drop across the transistor and the diode. D1 Vin C1 Gate drive circuit L1 RL c. Plot the transistor current, the inductor current, the capacitor current, and the load current as a function of...
Buck Converter Question
Q3. A Buck converter is used to produce a regulated 10V, 5A DC power supply from a variable DC source with an nominal input voltage of Vin = 20V±5V. The Buck converter switches at 250kHz, and operates entirely in the continuous conduction mode. The output filter capacitance is C1.0uF 3.a. Draw the circuit topology for the Buck converter. Ensure that your circuit includes the input DC source, the output load resistance, the switching devices (i.e. MOSFET and...
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...
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...
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