TPS6290x Synchronous Buck Converters

Texas Instruments' TPS6290x is a highly efficient, small, and flexible synchronous step-down DC/DC converter that is easy to use. A selectable switching frequency of 2.5 MHz or 1.0 MHz allows the use of small inductors and provides fast transient response. The device supports a high V_OUT accuracy of ±1% with the DCS-Control™ topology. The wide input voltage range of 3 V to 17 V supports a variety of nominal inputs such as 12 V supply rails, single-cell or multi-cell Li-Ion, and 5 V or 3.3 V rails.

The TPS6290x can automatically enter power-save-mode (if auto PFM/PWM is selected) at light loads to maintain high efficiency with a typical quiescent current of 4 µA. To minimize the solution size, the device includes a multi-function MODE/Smart-CONF pin to set the internal/external divider, switching frequency, output voltage discharge, and automatic power-save-mode/forced-PWM operation.