This application report describes how to design a power supply for a Global System for Mobile Communications (GSM)/General Packet Radio Service (GPRS) module. TI’s 2.5-A, 60-V TPS54260 SWIFT synchronous switcher with integrated 200-milliohm high-side FET provides up to 95 percent efficiency and low operating current to GSM/GPRS modules used in electronic meters (e-meters), fleet management and security systems. The TPS54260 has a wide switching frequency range (100 kHz to 2.5 MHz), and combines efficiency with design flexibility, and comes in a space-saving, thermally enhanced 3 mm x 4.9 mm x 1 mm monolithic MSOP package.