Description

A low-power negative supply voltage can be developed from a positive input supply using some very common PWM control ICs. Typical applications include generating a -5V to -12V supply for analog function ICs (OP amps) RS-232 communication circuits and MOSFET or IGBT gate drives at power levels below a few watts. This design note describes a low-power negative output voltage +5 to ?5V inverter usi