TPS62933

The TPS62933 is a high-efficiency, synchronous buck converter designed by Texas Instruments for powering low-power applications in portable and battery-operated devices. It operates with an input voltage range from 2.5 V to 5.5 V, making it suitable for single-cell Li-ion batteries and other common power sources. The device delivers up to 3 A of output current while maintaining exceptional efficiency across a wide load range, which is critical for extending battery life in mobile electronics. This converter features a fixed switching frequency of 2 MHz, enabling the use of small external components such as inductors and capacitors, thus reducing overall board space. Its integrated high-side and low-side MOSFETs optimize power conversion efficiency and reduce thermal dissipation, allowing operation in compact form factors without compromising performance. Additionally, the TPS62933 supports both pulse-frequency modulation (PFM) and pulse-width modulation (PWM) modes—switching automatically between them based on load conditions—to maximize efficiency under light loads while maintaining stable output regulation under heavy loads. The device includes comprehensive protection features such as over-current protection (OCP), over-temperature protection (OTP), and undervoltage lockout (UVLO), ensuring reliable operation in harsh environments. It also offers a programmable soft-start function to limit inrush current during startup, preventing stress on the input source and improving system stability. With an enable pin for power management and a power-good signal for system monitoring, the TPS62933 integrates seamlessly into complex power architectures requiring precise control and feedback. Applications for the TPS62933 include wearable devices, Internet of Things (IoT) sensors, medical instruments, and portable consumer electronics where space constraints, low quiescent current, and high efficiency are paramount. Its ability to operate efficiently at very low load currents makes it ideal for always-on systems that must minimize power consumption when idle. The TPS62933 is available in a compact 3 mm × 3 mm SON package, further enhancing its suitability for space-sensitive designs.