A Four-Quadrant DC/DC Switching Regulator Smoothly Transitions from Positive to Negative Output Voltages for FPGA and Other Applications

February 03, 2015 // By Albert Wu, Linear Technology

Additionally, this new architecture can generate an output voltage that transitions from one polarity to another, through the ground potential, smoothly and without any non-linearity from mode transitions.

In many electronic systems, it is necessary to provide a bipolar (positive and negative) voltage or current into a particular type of load. Loads that require bipolar voltages/currents include FPGA body biasing applications, thermoelectric coolers, DC motors, and many others. A new DC/DC switching architecture is presented that has the ability to generate true four-quadrant operation, meaning the output voltage can be positive or negative and the current flow can be in either direction as well.
Linear Technology, LT8710, FPGA, true four-quadrant operation