DC-DC converter for envelope tracking

摘要

Embodiments provide a DC-DC converter (DC-DC=direct current to direct current) for envelope tracking. The DC-DC converter includes a digital control stage and a driving stage. The digital control stage is configured to provide a digital control signal based on digital information describing an amplitude of a digital baseband transmit signal. The driving stage is configured to provide a supply voltage for an RF amplifier (RF=radio frequency) based on the digital control signal.

主权项

1. A DC-DC converter for envelope tracking, comprising:
a digital control stage comprising a digital modulator that is configured to generate a digital control signal in response to receiving digital information describing an amplitude of a digital baseband transmit signal and a digital value of a digital voltage reading from a battery voltage; and a driving stage configured to provide a supply voltage for an RF amplifier based on the digital control signal.