Efficient Switching Regulator for the PowerToad

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Presentation transcript:

Efficient Switching Regulator for the PowerToad - Itty James Samuel Design an efficient switching regulator Software interface to Multisim

What is the PowerToad? www.powertoad.com 2 - AC to DC voltage Converter 6 - A product specific connector. Laptop Computer with USB 6 USB 6 4 Variable DC 5 Power 3 5 DC Power 1 AC input 2 Pod Power Appliance

Circuitry 24 V DC input

Ethics Fire hazard of new switching regulator solution The implemented solution damages a device Copyright infringements of the design

Historical Review Different topologies of switching regulators Buck regulator most commonly used Techniques to make buck regulator more efficient

Buck Regulator

Considerations for efficient design Increase the duty cycle Two-stage device Earlier designs used the same idea, but had voltage spikes due to leakage inductance An extra inductor winding is added to compensate voltage and reduce spikes Soft Switching

MultiSim 7 Java interface to simulate buck regulators Enter values for a switching regulator Vin, Vout, I (current), Vref Interface produces a netlist, which can be imported into MultiSim Calculates Inductor, capacitor, and resistor values

Milestones Discuss with PowerToad Executives Design Simulation Develop simple interface to Multisim Implementation and replace old circuit Experiment