Patent ID: 9256234
Filing Date: 2016-02-09
CPC Classification: G05F,H02M,H03F,H04B

Claim Text:
1. A radio frequency (RF) switching converter comprising: a switching circuit operable to receive a power source voltage, the switching circuit being switchable so as to generate a pulsed output voltage from the power source voltage; an RF filter configured to convert the pulsed output voltage into a supply voltage having a supply voltage level with a ripple variation and operable to bias the supply voltage with a supply control output voltage having a supply control output voltage level such that the supply voltage level and the supply control output voltage level are displaced by a displacement voltage magnitude; and a voltage offset loop (VOL) configured to generate an offset voltage having an offset voltage magnitude in a first operational mode and to generate an Average Power Tracking (APT) signal having an APT signal level that varies from a DC offset signal level in accordance with the ripple variation of the supply voltage level of the supply voltage in a second operational mode; a bang-bang controller (BBC) configured to switch the switching circuit so that the switching circuit generates the pulsed output voltage, wherein when the VOL is in the first operational mode, the displacement voltage magnitude is set by the offset voltage magnitude of the offset voltage, and when the VOL is in the second operational mode, the supply voltage level of the supply voltage has an average DC supply voltage level set in accordance with the DC offset signal level of the APT signal.