Vicor – Buck regulator module with 24V input supplies output current up to 20A


Vicor has released a new member of its Cool-Power ZVS Buck family of voltage regulator modules. The PI3325-00-LGIZ is the first such module operating at a nominal 24V or 28V input voltage to be capable of handling a current as high as 20A.

Vicor’s Cool-Power ZVS regulator modules supply more power at higher temperatures than competitive devices, without sacrificing power density or efficiency.

In the case of the PI3325-00-LGIZ, the 20A output capability at a regulated 5.0V is provided by a module housed in a compact 10mm x 14mm x 2.5mm LGA package.

It requires only an output inductor and few passive components to make a complete design which occupies less than 740mm2 of PCB space.

The PI3325-00-LGIZ is also pin-compatible with the PI3525-00-LGIZ, a member of the Cool-Power ZVS Buck family which operates from a nominal 48V input. This means that users can quickly migrate power-system designs from a 24V input to a 48V input with minimal development effort.

Higher current is also achievable through parallel operation of the regulator.


  • Power-up into pre-biased load ≤6.0V
  • Over-/under-voltage lock-out
  • Output over-voltage protection
  • Over-temperature protection
  • Fast and slow current limits
  • Differential amplifier for output remote sensing
  • User-adjustable soft-start and tracking
  • Operating-temperature range: -40°C to 120°C


  • Computing equipment
  • Communications equipment
  • Industrial systems
  • Automotive systems
Part NumberPackageInput-voltage RangeNominal Output VoltageCurrent
PI3325-00-LGIZ10mm x 14mm14-42V5.0V20A
PI3523-00-LGIZ10mm x 14mm30-60V3.3V22A
PI3525-00-LGIZ10mm x 14mm30-60V5.0V20A
PI3526-00-LGIZ10mm x 14mm30-60V12V18A