Datasheet Linear Technology LTC3773EG#PBF — Datenblatt

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  Triple Output 3-Phase Controller Saves Space and Improves Performance in High Density Power Converters &mdash DN409
  PDF, 94 Kb, Datei veröffentlicht: Jan 29, 2007
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  advertisement Triple Output 3-Phase Controller Saves Space and Improves
  Performance in High Density Power Converters
  Design Note 409
  Mike Shriver
  Today’s telecommunications, server and network applications require power from a multitude of voltage
  rails. Having more than ten rails ranging from 5V to 1V
  or less is common. These boards are typically crowded
  with heat-producing FPGAs or microprocessors, thus
  demanding power converters that are both compact and
  highly efficient. Furthermore, the converters may need
  to meet other requirements such as a fast load step
  response and rail tracking. 220kHz, 400kHz or 560kHz, or it can be synchronized
  to an external clock between 160kHz and 700kHz. The
  controller can step down from input voltages as high as
  36V and the output voltage can be programmed from
  0.6V to 5V.
  Figure 1 shows a high density triple output DC/DC converter with each output delivering up to 5A using the
  LTC3773 controller. Figure 2 shows the efficiency of each
  output versus load current; where up to 93% efficiency is
  achieved. Reductions in space are realized by the use of
  dual channel FETs and a switching frequency of 400kHz
  which permits the use of 7mm Г— 7mm ferrite inductors. The LTCВ® 3773 switching regulator meets and even goes
  beyond the above requirements. This device is a 3-phase, …

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Herstellerklassifikation

• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | External Power Switch Buck Controllers

Andere Namen:

LTC3773EGPBF, LTC3773EG PBF