TPS61175-Q1

The TPS61175-Q1 is a high-efficiency, synchronous buck-boost converter designed for automotive applications, featuring an input voltage range from 2.5 V to 5.5 V, making it suitable for systems powered by single-cell lithium-ion batteries or 3.3 V/5 V rails. It delivers up to 1.5 A of continuous output current and supports low quiescent current operation—down to 40 µA in shutdown mode—enhancing energy efficiency in always-on automotive systems. This device integrates a high-side N-channel MOSFET and a low-side P-channel MOSFET, enabling efficient power conversion across both buck and boost modes. Its adaptive control architecture ensures stable operation during transitions between modes, minimizing output voltage ripple and maintaining high efficiency over a wide load range. The converter operates at a fixed frequency of 1.2 MHz, which allows the use of small external components such as inductors and capacitors, reducing overall board space requirements. Designed with automotive-grade reliability, the TPS61175-Q1 meets AEC-Q100 Grade 1 qualification standards, ensuring robust performance under harsh environmental conditions including temperature extremes (-40°C to +125°C), vibration, and EMI stress. It includes comprehensive protection features such as over-current protection (OCP), thermal shutdown, and undervoltage lockout (UVLO), which safeguard both the converter and connected loads from damage due to abnormal operating conditions. The device supports an enable pin for system-level power management and offers a power-good signal that indicates when the output voltage is within regulation. This makes it ideal for integration into complex automotive systems like infotainment, ADAS, telematics, and microcontroller-based subsystems where stable, clean power is critical. Additionally, its compact 8-pin SON package facilitates easy integration into space-constrained designs while offering excellent thermal performance. With its wide input range, high efficiency (>95% peak), and robust protection mechanisms, the TPS61175-Q1 provides a reliable and flexible power solution for modern automotive electronics, particularly where battery voltage fluctuation and long-term operational stability are key design considerations.