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US 2017/0288529 A1Published application
Duty cycle range control for envelope tracking switching regulators
AssigneeIntel Corporation
InventorsHolger Wenske, Stephan Henzler
Life of this patent
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Abstract
Some embodiments include apparatus and methods for using a direct-current to direct-current (DCDC) converter and a control unit coupled to the DCDC converter. The DCDC converter includes a first node to receive an input signal, a second node to couple to a terminal of an inductor, and a third node to couple to an output node. The DCDC converter includes a driver controlled by a signal. The control unit is arranged to generate control information based on a duty cycle of the signal to control the duty cycle range of the signal.
Claims25
An apparatus comprising:
- a direct-current to direct-current (DCDC) converter including a first node to receive an input signal, a second node to couple to a terminal of an inductor, and a third node to couple to an output node, the DCDC converter including a driver controlled by a signal;
- and
- a control unit to generate control information based on a duty cycle of the signal to control a duty cycle range of the signal.
An apparatus comprising:
- an amplifier;
- an additional amplifier including a first input node coupled to an output node of the amplifier, and second input node to couple to a first terminal of an inductor;
- a pulse width modulator coupled to an output node of the additional amplifier;
- a first driver including an input node coupled to an output node of the pulse width modulator and an output node to couple to a first terminal of an additional inductor;
- a comparator including a first input node to couple to a second terminal of the inductor, and a second input node to couple to the first terminal of the additional inductor;
- a second driver including an input node coupled to an output node of the comparator, and an output node to a second terminal of the inductor;
- and
- a control unit to generate control information based on a duty cycle of a signal generated by the pulse width modulator.
5 more elements
An electronic system comprising:
- a radio frequency (RF) power amplifier;
- and
- a power regulator coupled to the RF power amplifier, the power regulator including:
- a first direct-current to direct-current (DCDC) converter including a first node to receive an input signal, a second node to couple to a first terminal of a first inductor, and a third node to couple to a first terminal of a second inductor, the first DCDC converter including a driver controlled by a signal;
- a second DCDC converter including a first node to couple to a second terminal of the first inductor, a second node to couple to the first terminal of the second inductor, and a third node to couple to a second terminal of the second inductor;
- and
- a control unit to generate control information based on a duty cycle of the signal to control a duty cycle range of the signal.
4 more elements
Dependencies are inferred from the claim text.