Patent ID: 9467049
Filing Date: 2016-10-11
CPC Classification: H02M,Y02B

Claim Text:
1. A buck switching voltage converter operable in a pulse width modulation (PWM) mode and a pulse frequency modulation (PFM) mode, the converter comprising: high and low side switching transistors series connected at a switch node SW, and switchable, during the PWM and PFM modes, based on switching cycles with an ON time during which the high side switching transistor is ON and the low side switching transistor is OFF to generate an inductor charging current that increases to a peak current, and an OFF time during which the high side switching transistor is OFF and the low side switching transistor is ON to receive an inductor discharging current that decreases from the peak current until the end of the OFF time; mode control circuitry to control transitioning between PWM and PFM switching modes, including: mode switching circuitry to switch between the PWM and PFM modes in response to the integrated sense signal and the integrated reference signal.