TPS65313-Q1

• AEC-Q100 qualified for automotive applications:
  • Device temp grade 1:-40°C to +125°C, T_A
• Supports system-level functional safety requirements up to ASIL-C (ISO 26262) and SIL-2 (IEC 61508)
• Synchronous buck preregulator (BUCK1)
  • Input voltage range from 4 V to 36 V
  • Output currents up to 3.1 A
  • Factory-selectable output voltage: 3.3 V or 3.6 V
• Synchronous buck regulator (BUCK2)
  • Fixed input voltage: 3.3 V or 3.6 V
  • Output currents up to 2 A
  • Factory-selectable output voltage: 1.2 V, 1.25 V, 1.8 V, or 2.3 V
• Synchronous boost converter (BOOST)
  • Fixed input voltage of 3.3 V or 3.6 V
  • Output currents up to 600 mA
  • Output voltage of 5 V




• Phase-locked loop (PLL)
  • Output frequency around 2.2 MHz
  • Supports modulated or unmodulated external clock at SYNC_IN pin
• For all regulators
  • Soft-start feature
  • Independent voltage monitoring with diagnostics
  • Overcurrent, overload, overvoltage, undervoltage, and thermal protection
  • Internal loop compensation
• Integrated adaptively randomized spread spectrum (ARSS) modulation for regulator switching clock
• 3-µA quiescent current in the OFF state
• SPI for control and diagnostics
• Two general-purpose external-voltage monitors
• Integrated Q&A watchdog and reset supervisor for MCU or DSP
• Thermally enhanced 40-Pin VQFNP package with 0.5-mm pitch

All trademarks are the property of their respective owners.

The TPS65313-Q1 device is a power management IC (PMIC) that meets the requirements of MCU-controlled or DSP-controlled automotive, industrial, machinery, or transportation systems. With the integration of commonly used features, the device helps reduce board space and system cost.

The device includes one wide-VIN synchronous buck regulator (BUCK1) combined with one low-voltage (LV) buck regulator (BUCK2) and one boost converter (BOOST), which are powered from the wide-VIN buck regulator (BUCK1). The device features a low quiescent current in the OFF state to reduce current consumption in case the system is permanently connected to the supply. All outputs are protected against overvoltage, overload, and overtemperature conditions.