Reference no: EM13317841
1- Design a buck converter with the following specifications:
Input voltage between 11 V and 15 V, output voltage 1.8 V, output current 20 A, inductor current ripple less than or equal to 2 A, output voltage ripple less than or equal to 0.018 V, switching frequency 100 kHz.
a) Find L, C such that the specifications are met over the whole input voltage range.
b) Verify your design using simulation.
c) Find the current and voltage ratings for the diode and the switch in this converter, then find an appropriate diode and MOSFET for this converter based on the ratings.
d) Suppose someone else has designed a buck converter for the specifications in this problem and chosen an inductor value of 47 μH and a capacitor value of 220 μF. Determine what switching frequency is needed to meet the ripple specifications.
2- A buck converter has been designed for 5 V input, 1 V output, with an inductance of 10μH and a switching frequency of 350 kHz.
a) Determine the load resistance and power for critical conduction mode.
b) Determine the duty ratio required to maintain a 1 V output as resistance increases by a factor of 10 from the critical conduction load.
c) Verify your results using simulations.
d) Sketch the curve of duty ratio vs. resistance for maintaining 1 V output voltage for R ∈ [1, 100]Ω.
|
Find its youngs modulus
: For safety in climbing, a mountaineer uses a nylon rope that is 60 m long and 1.0 cm in diameter. Find its Young's modulus
|
|
Which object has the greater final speed
: Starting from rest, object 1 is subject to a 10Nforce for 2.0 s. Object 2, with twice the mass, is subject to a 15N force for 3.0 s
|
|
How does this event affect the demand for money
: If the fed does not respond to this event what will happen to the price level?
|
|
Determine the rate of return that the company will make
: Five years ago, GSI, an oil services company headquartered in Texas, issued $10 million worth of 12% 30-year bond with the dividend payable quarterly. The bonds have a call date of this year if GSI decides to take advantage of it.
|
|
Determine load resistance and power for critical conduction
: Determine the load resistance and power for critical conduction mode and determine the duty ratio required to maintain a 1 V output as resistance increases by a factor of 10 from the critical conduction load.
|
|
How far above the hole is the water level
: A nearsighted sheriff fires at a cattle rustler with his trusty six-shooter. Fortunately for the rustler, the bullet misses him and penetrates the town water tank, causing a leak. how far above the hole is the water level
|
|
Determine if the heat pump is reversible or irreversible
: If the heat pump requires a power input of 2 kW, and the room requires a heat input of 15 kW to maintain the temperature at 25°C, (a) find the COP of the heat pump. (b) Determine if the heat pump is reversible, irreversible, or impossible.
|
|
What is the change in electric potential energy of a charge
: he electric field in a particular region of space is found to be uniform, What is the change in electric potential energy of a charge q = 6.7 uC if it is moved from (x, y) = (20 cm, 45 cm) to (5 cm, 30 cm)
|
|
How far apart will they be when closest to one another
: Two identical particles, each with a mass of 4.5 mg and a charge of 30 nC, are moving directly toward each other with equal speeds of 4.0 at an instant, How far apart will they be when closest to one another
|