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Measuring the efficiency of TPS65310A-Q1

Posted: 05 Mar 2014     Print Version  Bookmark and Share

Keywords:TPS65310A-Q1  power management unit  DSP  Advanced Driver Assistance Systems  ADAS 

The TPS65310A-Q1 device is a power management unit that meets the requirements of DSP-controlled automotive systems (Advanced Driver Assistance Systems). The device integrates commonly-used features, which reduces board space and system costs.

The device includes one high-voltage buck controller for pre-regulation, and two buck controllers and one boost converter for post-regulation. A further integrated low-dropout regulator (LDO) rounds up the powersupply concept and offers a flexible system design with five independent voltage rails. The device offers a low-power-state LPM0 with all rails turned off to reduce current consumption in case the system is constantly connected to the battery line. All outputs are protected against overload and over temperature. An external PMOS allows the device to sustain voltage transients up to 80 V as a protection feature. This external PMOS protects the system in safety-critical applications if a rail shows a malfunction (under-voltage, over-voltage, undercurrent, or over-current). Internal soft start ensures controlled start-up for all supplies. Each power supply output has an adjustable output voltage based on the external resistor network settings.

The efficiency of the buck and boost regulators is important for the efficiency and thermal design of the system. This application report shows efficiency measurement results.

View the PDF document for more information.

Originally published by Texas Instruments at as "TPS65310A-Q1 Efficiency".

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