Shared integrated dc-dc supply regulator

A front-end module for use in a wireless device, the front-end module comprising:

• a first power amplifier on an integrated circuit die of the front-end module;
• and
• an integrated DC-DC converter circuit having at least a portion within the front-end module, located on the integrated circuit die, and further having a capacitor and an inductor external to the front-end module and connected to a regulated supply output pin of the integrated circuit die, the DC-DC converter circuit configured to regulate a first supply voltage provided to the first power amplifier and to regulate a second supply voltage provided to a second power amplifier via the regulated supply output pin, the second power amplifier located on a second integrated circuit die of a separate second front-end module not having a DC-DC supply regulator integrated on the second integrated circuit die.

A method of regulating power supplied to a first power amplifier and second power amplifier from an integrated DC-DC converter circuit, the method comprising:

• regulating a first power supply voltage by an integrated DC-DC converter circuit, the first power supply voltage provided to a first power amplifier on an integrated circuit die of a front-end module, the integrated DC-DC converter circuit having at least a portion within the front-end module located on the integrated circuit die, and the DC-DC converter circuit having a capacitor and an inductor positioned external to the front-end module and connected to a regulated supply output pin;
• and
• regulating a second power supply voltage by the integrated DC-DC converter circuit, the second power supply voltage provided to a second power amplifier located on a second integrated circuit die separate from the integrated circuit die and not having a DC-DC supply regulator configured on the second integrated circuit die, the second power supply voltage provided to the second power amplifier via the regulated supply output pin of the integrated circuit die.

A multi-chip module comprising:

• a first front-end module implemented on a first integrated circuit die having a regulated supply output pin, the first front-end module including a first power amplifier and at least a portion of an integrated DC-DC converter circuit configured to regulate a first supply voltage, the regulated first supply voltage provided to the first power amplifier, and the DC-DC converter circuit including a capacitor and an inductor external to the front-end module and connected to the regulated supply output pin;
• and
• a second front-end module implemented on a second integrated circuit die that is separate from the first integrated circuit die and includes a second power amplifier, the second power amplifier configured to receive a second regulated supply voltage provided by the DC-DC converter circuit via the regulated supply output pin.