Power module for envelope tracking
AssigneeMediatek Inc.
InventorsChun-Yen Tseng, Yen-Hsun Hsu
Life of this patent
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Abstract
A power module at least includes an ET (Envelope Tracking) module. The ET module includes a buck converter, an inductor, and a capacitor. The buck converter is coupled to a work voltage. The buck converter has a first input terminal for receiving a first control signal, a second input terminal coupled to a supply node, and a buck output terminal The inductor is coupled between the buck output terminal of the buck converter and the supply node. The capacitor is coupled between the supply node and a ground voltage. The ET module is configured to supply a first adaptive supply voltage at the supply node. The first adaptive supply voltage is determined according to the first control signal.
Claims9
A power module, comprising:
- an ET (Envelope Tracking) module, comprising:
- a buck converter, coupled to a work voltage, wherein the buck converter has a first input terminal for receiving a first control signal, a second input terminal coupled to a supply node, and a buck output terminal;
- an inductor, coupled between the buck output terminal of the buck converter and the supply node;
- and
- a capacitor, coupled between the supply node and a ground voltage;
- wherein the ET module is configured to supply a first adaptive supply voltage at the supply node, and the first adaptive supply voltage is determined according to the first control signal;
- wherein the power module further comprises:
- a mapping circuit, receiving a baseband signal, and generating the first control signal according to the baseband signal;
- wherein the mapping circuit obtains information of I/Q channel magnitude from the baseband signal.
Dependencies are inferred from the claim text.