Circuits & Electronics P24
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Power Conversion Circuits and Diodes 6.002 Fall 2000 Lecture 24 1 .Power Conversion Circuits (PCC) PCC 110V 60Hz + – 5V DC solar cells, battery 3V DC PCC + – 5V DC DC-to-DC UP converter Power efficiency of converter important, so use lots of devices: MOSFET switches, clock circuits, inductors, capacitors, op amps, diodes R Reading: Chapter 16 and 4.4 of A & L. 6.002 Fall 2000 Lecture 24 2 .First, let’s look at the diode iD + vD – v ⎛ VD ⎞ ⎜ e T − 1⎟ iD = I S ⎜ ⎟ ⎠ ⎝ I S = 10 −12 A VT = 0.025V Boltzmann’s constant temperature in Kelvins charge of an electron kT VT = q iD iD − IS vD mV vD V Can use this exponential...
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