The perception that GaN technology requires a negative Gate voltage has changed over time. Advancements in power management integrated circuits (PMICs) have made this negative Gate voltage operation irrelevant. With PMICs, we can now design and control RF GaN PA technology in various applications, including radar, wireless infrastructure, and satellite communications. Additionally, PMICs can help overcome obstacles in RF Front-End (RFFE) design, resulting in optimal performance.
Furthermore, this article delves into the complexities of power supply rails in RF amplifier systems and highlights the importance of non-isolated RF Point of Load regulators (RF PoL) in reducing noise and optimizing performance. In particular, we will spotlight PMIC solutions such as ACT43750, ACT43950, and ACT43850 for their ability to regulate Gate and Drain voltages, maintain constant RF GaN PA Gate voltage bias, and optimize power conversion for GaN P.