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Design Notes

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  Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested and Verified Power Management Solutions &mdash DN549
  PDF, 1.6 Mb, File published: Feb 19, 2016
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  Powering Altera ArriaВ 10 FPGA andВ Arria 10 SoC: Tested
  and Verified Power Management Solutions
  Design Note 549
  Afshin Odabaee
  Introduction
  FPGA development kits allow system developers to
  evaluate an FPGA without having to design a complete
  system. Figures 1 and 2 show Altera’s new 20nm
  Arria 10 FPGAs and Arria 10В SoCs (System-on-Chip)
  development boards. These boards are tested and
  verified by Altera, exemplifying best design practices
  in layout, signal integrity and power management.
  Power Management for Core, System and I/O
  The power management solution for high end FPGAs,
  including the Arria 10, should be carefully selected.
  A well thought-out power management design can
  reduce PCB size, weight and complexity, as well as
  lower power consumption and cooling costs. And it
  is essential to achieve optimal system performance.
  ForВ example, the 0.95V at 105A supplied by the 12V
  DC/DC regulator powering the core of the Arria 10 GX
  FPGA in Figure 1 has several features that complement
  the power saving schemes of the SoC: Figure 1. Arria 10 GX FPGA Development Kit …

Articles

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  Avoid Debugging Cycles in Power Management for FPGA, GPU and ASIC Systems &mdash LT Journal
  PDF, 3.2 Mb, File published: Aug 25, 2016
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  Avoid Debugging Cycles in Power Management for FPGA,
  GPU and ASIC Systems
  Afshin Odabaee When it comes to designing FPGA, GPU or ASIC controlled systems, the number of
  design challenges related to power management and analog systems pale in comparison
  to those related to digital design. Nevertheless, it is risky to assume that power system
  design can be left to “later,” or taken in line with digital design. Even seemingly innocuous
  problems in power supply design can significantly delay the release of a system, as any
  added time to the power system debugging cycle can halt all work on the digital side.
  A good way to put DC/DC regulation
  issues to rest is to use a verified development kit offered by the FPGA, GPU or
  ASIC vendor. Often, the design itself or
  a similar design is available as a board/
  kit by the suppliers of power products
  and FPGA, GPU and ASIC manufacturers. Using a tested and verified kit unburdens
  system designers of most power system
  and analog issues, allowing them instead
  to focus their energies on configuring the
  complex digital systems. The optimum
  power system layout is taken care of
  before significant design is undertaken. THOUGHTFUL POWER MANAGEMENT
  IS CHALLENGING AT THE START Every design task is initially daunting,
  and power management design is no
  exception. This is the case when power is …

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  Low IQ Ideal Diode Controller with Reverse Input Protection for Automotive and Telecom Power Solutions &mdash LT Journal
  PDF, 248 Kb, File published: Jan 17, 2017
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  design features Low IQ Ideal Diode Controller with Reverse Input Protection
  for Automotive and Telecom Power Solutions
  Meilissa Lum Blocking diodes are widely used in power supplies to solve a variety of problems.
  In automotive systems, a series blocking diode protects against accidental reverse
  battery connections when the battery is replaced or the car is jump started. High
  availability systems and telecom power distributions employ blocking diodes to
  achieve redundancy by paralleling power supplies. Diodes are also used to prevent
  discharge of reservoir capacitors in situations where some temporary holdup of
  output voltage is necessary to ride through input dropouts or noise spikes, or to
  allow the load to gracefully power down when the input supply abruptly fails.
  While blocking diodes are easy to understand and apply, their forward drop results
  in significant power dissipation, making
  them unsuitable in both low voltage and
  high current applications. In low voltage
  applications, the forward voltage drop
  becomes a limiting factor for a circuit’s
  operating range, even when using a
  Schottky barrier diode. At least 500mV of
  supply headroom is lost across a series
  diode—a substantial degradation in 12V
  automotive systems where the supply can
  drop to as low as 4V during cold crank.
  Since diodes operate at a fixed voltage …

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  9V to 80V Ideal Diode Reduces Heat Dissipation by Order of Magnitude over Schottky &mdash LT Journal
  PDF, 147 Kb, File published: Mar 19, 2008
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  DESIGN IDEAS L 9V to 80V Ideal Diode Reduces Heat
  Dissipation by Order of Magnitude
  by Meilissa Lum
  over Schottky
  Introduction
  High availability systems often employ
  parallel-connected power supplies
  or battery feeds to achieve redundancy and enhance system reliability.
  Schottky ORing diodes have long been
  used to connect these supplies at
  the point of load. Unfortunately, the
  forward voltage drop of these diodes
  reduces the available supply voltage
  and dissipates significant power at
  high currents. Costly heat sinks and
  elaborate layouts are needed to keep
  the Schottky diode cool.
  A better solution is to replace the
  Schottky diode with a MOSFET-based
  ideal diode. This reduces the voltage
  drop and power dissipation, thereby
  reducing the complexity, size and cost
  of the thermal layout and increasing …

Model Line

Manufacturer's Classification

• Monitor, Control and Protection > PowerPath Controllers & Ideal Diodes
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Power Management