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• Herunterladen
  Avoid Debugging Cycles in Power Management for FPGA, GPU and ASIC Systems &mdash LT Journal
  PDF, 3.2 Mb, Datei veröffentlicht: 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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  Power Supply Tracking for Linear Regulators &mdash LT Journal
  PDF, 267 Kb, Datei veröffentlicht: Mar 25, 2005
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  DESIGN FEATURES Power Supply Tracking for
  Linear Regulators
  Introduction (see “Versatile Power Supply Tracking
  without MOSFETs” from Linear Technology Magazine, February, 2004 ) but
  it is easily adapted to linear regulators,
  including popular low-dropout (LDO)
  types. Summarized here are several
  techniques for controlling linear regulators with the LTC2923. The LTC2923 provides simple and
  versatile control over the power-up
  and power-down behavior of switching
  power supplies. It allows several supplies to track the voltage of a master
  supply, so that their relative voltages
  meet the stringent specifications for
  the power up of modern digital
  semiconductors, such as DSPs, microprocessors, FPGAs and ASICs. The
  LTC2923 is specifically designed to
  work with switching power supplies Monolithic Regulators
  Table 1 lists three popular monolithic
  linear regulators that have been tested
  with the LTC2923. Using these three Table 1. New monolithic linear regulators Regulator IOUT(MAX) (V) VIN(MIN) (V) VIN(MAX) (V) VDROPOUT (V) LT3020 100mA 0.9 10 0.15 LTC1844 150mA 1.6 6.5 0.11 LTC3025 300mA 0.9 5.5 0.045 3.3V IN
  2.2ВµF 3.3V CGATE
  0.1ВµF 0.1ВµF
  VCC GATE OFF ON ON SHDN …

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• Power Management > LDO Linear Regulators > Positive Linear Regulators (LDO)

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LTC3025IDCPBF, LTC3025IDC PBF