Triple synchronous step-down converter has options to optimise system for targeted applications

The Texas Instruments TPS65268-Q1 device incorporates triple-synchronous buck converters with 4V to 8V wide input voltage. The converter with constant frequency peak current mode has been developed to simplify its application while offering designers options to optimise the system according to targeted applications. The switching frequency of the converters is adaptable from 200kHz to 2.3MHz with an external resistor. Operation that is 180-degree out-of-phase between BUCK1 and BUCK2, and BUCK3 (BUCK2 and BUCK3 run-in phase) minimises the input filter requirements. Each buck converter in the device operates in forced continuous-current mode (FCCM) at light load condition for reduced output voltage ripple and improved load transient response. The device features overvoltage, overcurrent, short-circuit, and overtemperature protection.