The TPS65310A-Q1 device is a power-management unit, meeting
the requirements of digital signal processor (DSP)-controlled automotive systems (for example,
Advanced Driver Assistance Systems). With the integration of commonly used features, the
TPS65310A-Q1 device significantly reduces board space and system costs.
The device includes one high-voltage buck controller for preregulation combined with two
buck and one boost converters for postregulation. A further integrated low-dropout regulator (LDO)
rounds up the power supply concept and offers a flexible system design with five independent
voltage rails. The device offers a low power state (LPM0 with all rails off) to reduce current
consumption in case the system is constantly connected to the battery line. All outputs are
protected against overload and overtemperature.
An external PMOS protection feature makes the device capable of sustaining voltage
transients up to 80 V. This external PMOS can also be used in safety-critical applications to
protect the system in case one of the rails shows a malfunction (undervoltage, overvoltage, or
Internal soft start ensures controlled start-up for all supplies. Each power supply
output has adjustable output voltage based on the external resistor network settings.
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