In this project, dc-dc conversion is studied. Specifically, a converter capable of converting 12V (e.g., a car battery) to 5V and delivering 3A is considered. Several performance characteristics will be examined:
Efficiency at the nominal operating point (12-V input and 3-A load) and under light load (12-V input and 0.3-A load). This is (P_(out ))/(P_(in )) and is ideally unity or 100%, meaning the converter is lossless.
Load regulation will be calculated by examining the performance at both the nominal operating point and when the load current varies (0.3A). This is (|Delta V_(out )|)/(V_(out nominal )) and is ideally zero, meaning the output voltage does not vary with load current.
Line regulation will be calculated by examining the performance at both the nominal operating point and when the input voltage varies (14 V). This is (Delta V_(out ))/(Delta V_(in )) and is ideally zero, meaning the output voltage does not vary with input voltage.
Several potential circuits are considered. The first circuit is the simplest voltage divider shown below. Determine expressions for V_(out ) and I_(in ) as functions of V_(in ) and I_(out ). Calculate the resistance such that V_(out )=5V at the nominal operating point. Calculate the nominal and lioht_load efficioncies and load and line regulations for this circuit.
The second circuit is a shunt regulator with an ideal 5-V Zener diode as shown below. Determine expressions for V_(out ) and I_(in ) as functions of V_(in ) and I_(out ). Calculate the resistance such that I_(in )=3A (i.e., the Zener diode acts properly under full load) at the nominal operating point. Calculate the nominal and light-load efficiencies and load and line regulations for this circuit
In this project,dc-dc conversion is studied.Specifically,a converter capable of converting l2 V e.ga car battery to 5 V and delivering 3 A is considered.Several performance characteristics will be examined: Efficiency at the nominal operating point (12-V input and 3-A load) and under light load
Pin
converter is lossless
Load regulation will be calculated by examining the performance at both the nominal |Vout] operating point and when the load current varies (0.3 A). This is and is ideally Vout,nominal zero,meaning the output voltage does not vary with load current Line regulation will be calculated by examining the performance at both the nominal
Vin
meaning the output voltage does not vary with input voltage
Several potential circuits are considered. The first circuit is the simplest voltage divider shown below.Determine expressions for Vout and lin as functions of Vin and lout.Calculate the resistance such that Vout = 5 V at the nominal operating point. Calculate the nominal and light-load efficiencies and load and line regulations for this circuit VV
Figure 1.Voltage divider
The second circuit is a shunt regulator with an ideal 5-V Zener diode as shown below Determine expressions for Vout and lin as functions of Vin and Iout. Calculate the resistance such that lin =3 Ai.e.the Zener diode acts properly under full load at the nominal operating point. Calculate the nominal and light-load efficiencies and load and line regulations for this circuit.
Figure 2.Shunt regulator
