Abstract

Negative power supply is required and widely used in medical imaging systems and other electronic systems, although positive power supply is dominant in all electronic systems. Unlike positive power supply, designs for negative power supply often are a challenge for junior engineers and not straightforward. Engineers also have less options for best negative power supply designs in the market compared to the positive power supply. This application note introduces several methods to convert a positive power supply to a negative power supply to meet miscellaneous requirements from engineers under complexity, performance, and package constraints.