FAST-CHARGING VOLTAGE GENERATOR

摘要

A voltage generator including an oscillator having an output, a charge pump having an input and an output, the input of the charge pump being coupled to the output of the oscillator, a smoothing capacitor, a resistor having an input end and an output end, wherein the input end is coupled to the charge pump and the output end is coupled to the smoothing capacitor, and a shorting element connected in parallel with the resistor and which, when turned on, causes the resistor to be at least partially bypassed, wherein the voltage generator is configured to supply voltage to a radio frequency (RF) switch via the smoothing capacitor, and a frequency of the oscillator is controlled to be faster during a switching period of the RF switch.

主权项

1. A voltage generator, comprising:
an oscillator having an output; a charge pump having an input and an output, the input of the charge pump being coupled to the output of the oscillator; and a smoothing capacitor coupled to the output of the charge pump; wherein the voltage generator is configured to supply a voltage to a circuit via the smoothing capacitor and the oscillator is configured to operate at a first frequency that is higher than a second frequency during a transition period of the circuit; and wherein an enable signal is generated based on control signals that determine which signal path in a switch is enabled, and the enable signal is employed to cause the oscillator to operate at the first frequency.