2006 APPLICATION NOTE 3844 Making Voltage Inverter from Buck
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Maxim Notes POWER-SUPPLY CIRCUITS Keywords: inverter, step-down, buck, inverting, DC-DC Converter, switch-mode
2006
APPLICATION NOTE 3844
Making Voltage Inverter from Buck (Step-Down) DC-DC Converter
Abstract: step-down DC-DC converter used inverter with changes operating schematic. This application note shows relabel connector points this. step-down DC-DC converter used inverter with changes operating schematic. only difference between normal step-down application inverting operation labels connection points. step-down DC-DC converter's VOUT node inverter. step-down DC-DC converter's node -VOUT inverter. Input power, VIN, same node both circuits. When using step-down DC-DC converter inverter, there some limitations. voltage difference between input negative output must less than step-down DC-DC converter's maximum operating input voltage. essence, step-down DC-DC converter with maximum input used convert -7V, more. addition, minimum input voltage inverting circuit must greater than minimum operating voltage step-down minus diode drop. That because start-up, there initially negative output voltage. Consequently, step-down biased only input voltage, less diode forward drop.
Figure Block diagram shows generic step-down DC-DC converter both normal step-down (Figure connected negative-output voltage inverter (Figure 1b).
Application Note 3844: http://www.maxim-ic.com/an3844 More Information technical questions support: http://www.maxim-ic.com/support samples: http://www.maxim-ic.com/samples Other questions comments: http://www.maxim-ic.com/contact
AN3844, 3844, APP3844, Appnote3844, Appnote 3844 Copyright Maxim Integrated Products Additional legal notices: http://www.maxim-ic.com/legal
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