Patent ID: 9130457
Filing Date: 2015-09-08
Classification: H02M,Y02B

Abstract:
1. An apparatus comprising: a control logic block configured to control low-side and high-side switches coupled to an inductor, wherein: the high-side switch is controlled to selectively couple the inductor to an output voltage coupled to a load and a storage capacitor; the low-side switch is controlled to selectively couple the inductor to a ground voltage; and the control logic block is configured to control the switches based on inputs comprising a function of the output voltage and a function of current through the low-side switch; and the apparatus further comprising: a comparator configured to generate a comparator output via a comparison of the function of the output voltage to a reference voltage comprising a difference between a threshold voltage and the function of current through the low-side switch; wherein: when a digital control signal is set to a first mode, the control logic block is configured to turn on the low-side switch based on a latched value of the comparator output; and when the digital control signal is set to a second mode, the control logic block is configured to turn on the low-side switch based on a value of the comparator output.