2-phase step-down DC-DC converter for low profile point-of-load power supplies

This post is sponsored by Texas Instruments. Texas Instruments TPS62480 is a synchronous 2-phase step-down DC-DC converter for low profile point-of-load power supplies. The input voltage range of 2.4V to 5.5V enables operation from typical 3.3V or 5V interface supplies as well as from backup circuits dropping down as low as 2.4V. The output current is up to 6A continuously provided by two phases of 3A each, allowing the use of low-profile external components. Both the rails are running out of phase, reducing pulse current noise significantly. It provides an automatically entered power save mode to maintain high efficiency down to very light loads. This incorporates an automatic phase adding and shedding feature using both or only one phase according to the actual load. The device features a Power Good signal and an adjustable soft start. The device features a Thermal Good signal to detect excessive internal temperature. The output voltage can be changed to a preselected value by VSEL pin. It is able to operate in 100% duty cycle mode. The device is a small 3mm × 2.5mm HotRod package (RNC).