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Design Notes

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  Protect Sensitive Circuits from Overvoltage and Reverse Supply Connections &mdash DN497
  PDF, 140 Kb, File published: Sep 19, 2011
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  Protect Sensitive Circuits from Overvoltage and Reverse Supply
  Connections
  Design Note 497
  Victor Fleury
  Introduction
  What would happen if someone connected 24V to your
  12V circuits? If the power and ground lines were inadvertently reversed, would the circuits survive? Does your
  application reside in a harsh environment, where the input
  supply can ring very high or even below ground? Even
  if these events are unlikely, it only takes one to destroy
  a circuit board. Undervoltage, Overvoltage and Reverse-Supply
  Protection
  The LTC В®4365 is a unique solution that elegantly and
  robustly protects sensitive circuits from unpredictably
  high or negative supply voltages. The LTC4365 blocks
  positive voltages as high as 60V and negative voltages as
  low as –40V. Only voltages in the safe operating supply
  range are passed along to the load. The only external
  active component required is a dual N-channel MOSFET
  connected between the unpredictable supply and the
  sensitive load. To block negative supply voltages, system designers
  traditionally place a power diode or P-channel MOSFET in
  series with the supply. However, diodes take up valuable …

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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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  No Blocking Diode Needed to Protect Sensitive Circuits from Overvoltage and Reverse Supply Connections &mdash LT Journal
  PDF, 1.0 Mb, File published: Jul 15, 2011
  Extract from the document

  design features No Blocking Diode Needed to Protect Sensitive Circuits from
  Overvoltage and Reverse Supply Connections
  Victor Fleury What would happen if
  someone connected 24V
  to your 12V circuits? If the
  power and ground lines were
  inadvertently reversed, would
  the circuits survive? Does
  your application reside in a
  harsh environment, where
  the input supply can ring
  very high or even below
  ground? Even if these events
  are unlikely, it only takes one
  to destroy a circuit board.
  What can you do to protect your sensitive circuits from voltages that are
  too high, too low, or even negative?
  To block negative supply voltages,
  system designers traditionally place a
  power diode in series with the supply.
  However, this diode takes up valuable
  board space and dissipates a significant
  amount of power at high load currents. …

Model Line

Manufacturer's Classification

• Monitor, Control and Protection > Surge Stopper, Overvoltage & Overcurrent Protection
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Power Management

Other Names:

LTC4365IDDBPBF, LTC4365IDDB PBF