Skyworks Solutions, Inc.

Abhishekh Devaraj

Sachin Nagarajan

Florinel G Balteanu

Yunyoung Choi

Wei Liu

Apparatus and methods for radio frequency (RF) switch control are provided. In certain embodiments, a level shifter for an RF switch includes a first level-shifting n-type transistor, a first cascode n-type transistor in series with the first level-shifting n-type transistor between a negative charge pump voltage and a first output that provides a first switch control signal, a first level-shifting p-type transistor, a first cascode p-type transistor in series with the first level-shifting p-type transistor between a positive charge pump voltage and the first output, and a second cascode p-type transistor between a regulated voltage and a gate of the first level-shifting n-type transistor and controlled by a first switch enable signal.

Radio frequency switch control circuitry

In some embodiments, a charge pump system can include a charge pump having a plurality of units driven by respective clock signals having different phases. The plurality of units can provide respective output voltages combined into an output voltage of the charge pump. The charge pump system can further include a feedback circuit configured to compare a scaled value of the output voltage with a reference voltage to generate a comparator output voltage. The charge pump system can further include a level shifter circuit configured to shift the comparator output voltage to a level of the output voltage of the charge pump.

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Irvine, CA, United States of America

Abhishekh Devaraj