The TPS65131-Q1 is a dual-output dc-dc converter that generates two adjustable output voltages. One output voltage is positive (boost converter), the other is negative (inverting converter). The positive output is adjustable up to 15V, the negative output is adjustable down to –15V. The device operates with an input voltage range of 2.7V to 5.5V. Both converters (positive and negative output) work independently of each other. They share a common clock and a common voltage reference. A fixed-frequency, pulse-width-modulated (PWM) regulator controls both outputs separately. In general, each converter operates in continuous-conduction mode (CCM). To improve efficiency at light loads, the converters can operate in discontinuous-conduction mode (DCM). When the power-save mode is enabled, the converters automatically transition between CCM and DCM operation: As the load current decreases, the converter enters DCM mode. Power-save mode is individually configurable for both outputs. The transition as a function of the load current works independently for each converter.