In an embodiment, a wireless power transmitter of a wireless charging system may detect an amplitude shift keying (ASK) carrier signal sent by a wireless power receiver of the wireless charging system, attenuate the ASK carrier signal, and clamp the attenuated ASK carrier signal to a predetermined…
In an embodiment method, an envelope voltage of a resonant capacitor of a wireless power receiver in a wireless charging system may be detected at an output node. One or more parameters of the wireless power receiver may be adjusted in order keep the envelope voltage within a pre-determined voltage…
A method includes connecting an output of a switched capacitor converter to a battery, the switched capacitor converter comprising a first switch, a second switch, a third switch and an upper circuit connected in series, and a flying capacitor connected between a common node of the first switch and…
A battery charging system includes a buck switching converter configured to operate in either a buck mode or a boost mode depending on a system reconfiguration, a linear charger having a first terminal and a second terminal, wherein at least one terminal of the first terminal and the second…
A method includes turning on a first group of switches of a switched capacitor converter in a battery charging system to establish a first conductive path, and configuring a system voltage at a system bus to charge a first flying capacitor to a predetermined voltage level through the first…
A single-stage battery charging system includes a hybrid converter comprising a plurality of first power switches connected in series, an inductor and a first flying capacitor, wherein the inductor is connected to a midpoint of the plurality of first power switches, a switched capacitor converter…
Gate Drive Apparatus and Control Method for Switched Capacitor Converter A power converter includes a plurality of power switches connected in series between a system ground and an input voltage bus, wherein an upper power switch located between the input voltage bus and an output terminal of the…
A control circuit is configured to control a flyback circuit comprising a primary-side switch, a secondary-side rectifier and a transformer. The control circuit comprises a feedback control circuit configured to generate a secondary-side control signal based on a current ripple signal of the…
A single-stage battery charger system includes a switched capacitor converter coupled between an input power source and a load, an inductor coupled between a midpoint of the switched capacitor converter and the load, and an isolation switch coupled between the midpoint and the load, wherein the…
An apparatus includes a first gate drive transistor and a second gate drive transistor connected in series, a common node of the first gate drive transistor and the second gate drive transistor connected to a gate of a power switch, the second gate drive transistor configured as a bulk switch…