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Other Parts Discussed in Post: TPS65218

If you’re an engineer working with field-programmable gate arrays (FPGAs), you know that they require optimized power sequences for efficient operation. Meeting these specific power needs using discrete components typically requires an additional discrete sequencer or microcontroller. Finding the right part, however, often adds cost, time and even size for small-form-factor applications, which then won’t meet your customers’ specifications.

Instead of going through this hassle, think of a power-management integrated circuit (PMIC) instead. It has three key advantages:

  • It is a single-chip solution for your complete system power needs.
  • It provides power monitoring for all of the voltage rails, enabling you to confirm that the power rails are within your system specifications.
  • It provides the right package for better thermal dissipation to keep your system temperature in check, which is especially important for industrial applications.

Consider TI’s flexible TPS65218 PMIC to meet the power requirements of modern FPGAs. It gives you three advantages in terms of flexibility: output voltage, sequence and power monitoring of each rail. It has three adjustable step-down DC/DC converters, an adjustable buck-boost converter and an adjustable low-dropout regulator (LDO). The adjustable outputs, along with the integrated sequencer, allow the TPS65218 to be set up not only for processors but FPGAs as well. This setup works well for many applications such as electronic point-of-sale devices, programmable logic controllers, home gateways, thermostats, elevator panels and solar invertors.

The TPS65218’s converters can have their output voltage adjusted without any need for external resistor-divider networks and can fully configure the power sequence without an external sequencer, helping decrease bill-of-materials (BOM) size and cost.

In addition to the selectable output voltages, each converter can be assigned to one of 10 time slots or strobes to create custom power-up/power-down sequences. This feature allows you to create solutions for different FPGAs, including the Altera Cyclone IV and Max 10 or Xilinx Zynq 7000. The figures below shows example of the power sequence.

 

What applications using FPGAs could you power using a flexible PMIC such as the TPS65218? Try out the TPS65218 evaluation module, or check out TI’s Processor Power reference designs.

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