Figure 3. The MAX1820 step-down switching regulator is optimized for highest efficiency during data transmission where battery drain is the highest. Constant fixed-frequency switching at 1MHz provides for low output ripple and noise while still maintaining relatively high efficiency and low power loss during voice transmission.
Due to the unique performance of the MAX1820, there is now widespread 3G-handset design activity implementing this system architecture. As the efficiency benefits of using a step-down switching regulator to power a W-CDMA PA are proven, this topology may be adopted across more 3G standards and a variety of end equipment, helping to make the promise of small, feature-laden data handsets and wireless mobile computing a reality.
本文关键字：电源 电力配电知识，电工技术 - 电力配电知识
