TPS6292xx Synchronous Buck Converters

Texas Instruments' TPS6292xx devices are small, highly efficient and flexible, easy-to-use synchronous step-down DC/DC converters with a wide input voltage range (3 V to 17 V) that support a wide variety of systems that are powered by 12 V, 5 V, or 3.3 V supply rails, or single-cell or multi-cell Li-Ion batteries. These converters can be configured at 2.5 MHz or 1 MHz in a forced PWM mode or variable frequency (auto PFM) mode. In auto PFM mode, the devices automatically transitions to power-save mode at light loads to maintain high efficiency. The low quiescent current of 4 µA (typical) provides high efficiency down to the smallest loads.

TI's automatic efficiency enhancement (AEE) mode holds a high conversion efficiency through the operating range without using different inductors by automatically adjusting the switching frequency based on the input and output voltages. In addition to selecting the switching frequency behavior, the MODE/S-CONF input pin can select between different combinations of external and internal feedback dividers and enabling and disabling the output voltage discharge capability. In the internal feedback configuration, a resistor between the FB/ VSET pin and GND can select between 18 output voltage options.