Zero Voltaged Switching Simulation

Simulation of a Zero Voltage Switching circuit, simulation made with "Circuit Simulator Applet" from www.falstad.com/circuit/

How it works: Each MOSFET is turned on at the peak of the respective sinewave (when the voltage across source and drain is zero) through the two normal diodes (which must be hish speed diodes in a real life circuit). The two 12v Zener Diodes prevent the gate driving voltage from going above 12 volts. The Inductor (top) assures a constant current is flowing into the center tap of the transformer. If the inductance of this inductor is too low, the Tank Capacitor and MOSFETs will get extra stress and or the circuit will not oscillate properly. Notice the two 470 ohm resistors get alot of current and should be 2+ watt resistors in a real life circuit. Also note that the MOSFETs and the Tank Capacitor are receiving PI x the input voltage (about 3.14 x input), so real life circuits should account for this with the appropriate voltage rated parts.

Circuit source below, to import click File - Import and paste into edit box and click "Import".

$ 1 5.0E-6 4.43302224444953 44 5.0 50
c 560 256 560 320 0 1.0E-6 55.21909258338815
w 624 256 560 256 0
w 624 320 560 320 0
w 560 320 560 336 0
f 464 352 512 352 0 1.5
g 512 368 512 384 0
R 368 192 320 192 0 0 40.0 24.0 0.0 0.0 0.5
r 688 256 688 320 0 1000.0
169 688 320 624 320 0 0.083 2.0 0.02741325422103716 0.05907949881313025 0.09283520863006642
w 624 288 608 288 0
w 608 288 608 208 0
f 464 224 512 224 0 1.5
g 512 240 512 256 0
w 560 256 560 208 0
w 560 208 512 208 0
g 464 288 480 288 0
r 368 224 416 224 0 470.0
r 368 352 416 352 0 470.0
r 416 224 416 288 0 10000.0
r 416 288 416 352 0 10000.0
w 464 224 416 224 0
w 416 352 464 352 0
w 464 288 416 288 0
d 416 352 416 400 1 0.805904783
d 416 224 416 176 1 0.805904783
w 416 400 544 400 0
w 416 176 528 176 0
w 544 400 544 256 0
w 544 256 560 256 0
w 528 176 528 336 0
w 512 336 528 336 0
w 528 336 560 336 0
w 368 192 368 160 0
w 368 160 608 160 0
l 608 160 608 208 0 0.83 0.03375570981693621
w 368 192 368 224 0
w 368 224 368 352 0
z 464 288 464 224 1 0.805904783 12.0
z 464 288 464 352 1 0.805904783 12.0
o 0 64 0 35 139.98404638611277 0.3499601159652819 0 -1
o 7 64 0 35 69.99202319305638 0.04374501449566024 0 -1
o 20 64 0 35 18.707220957835556 0.046768052394588894 0 -1
o 11 64 0 35 80.0 0.2 1 -1
o 4 64 0 35 80.0 0.2 1 -1

Category:

Science & Technology

Tags:

• ZVS
• Zero Voltage Switching
• Zero Voltage Switch
• ZVS Driver
• ZVS Simulation
• Circuit Simulator

[chrisandwadefunny]

WTH!?!