1 Introduction

Unlike the conventional constant voltage boost controller that uses feedback resistor network to set one regulated voltage, the feedback network of LP886x-Q1 is used to determine the minimum and maximum voltages at boost output. In the actual application, the boost output voltage is adjusted dynamically by an internal 11-bit current DAC to the minimum necessary level needed by the output channels to achieve optimum efficiency. Boost UVP and OVP levels are also defined by the feedback network and appropriate feedback resistor values need to be chosen to prevent false triggering of UVP and OVP faults.