Patent attributes
An envelope tracking (ET) power management circuit is provided. The ET power management circuit includes a number of tracker circuits each configured to operate based on a respective input voltage. In various operation scenarios, one or more selected tracker circuits may be configured to provide ET modulated voltages to a number of amplifier circuits. In examples discussed herein, each of the selected tracker circuits is configured to draw the respective input voltage from a single voltage circuit (e.g., an inductor-based buck-boost circuit) in the ET power management circuit. By utilizing the single voltage circuit to power the selected tracker circuits, as opposed to employing multiple voltage circuits, it is possible to reduce the footprint of the ET power management circuit, thus helping to reduce cost and power consumption of the ET power management circuit.
