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Analog Devices ADP1873 | Demoboard UG-057

ADP1872-EVALZ/ADP1873-EVALZ User Guide


Eingangsspannung13 V
Ausgang 11.8 V / 20 A


12/13—Rev. 0 to Rev. AADP1872-EVALZ/ADP1873-EVALZ User GuideUG-057 document describes the evaluation board hardware for the ADP1872/ADP1873 PWM buck controllers. The evaluation boards can be used to evaluate the ADP1872 or ADP1873 and application circuits using these ICs without requiring any additional software.The ADP1872/ADP1873 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current limit protection by using a constant on-time, pseudo-fixed frequency with a programmable current-sense gain, current-control scheme. The ADP1873 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads (see the ADP1872/ADP1873 data sheet for more information). Both devices are available in a small, 10-lead MSOP package and can operate over the −40°C to +125°C temperature range.


  • Wide power input voltage 2.75Vto 20V
  • Bias supply voltage range 2.75V to 5.5V
  • Available in 1.8V Fixed output voltage
  • Available in 300Khz, 600Khz, and 1.0MHZ switching frequency options
  • Available in power saving mode (psm) for light loads (ADP 1873 only)
  • Starts into a prechared or preloaded output

Typische Anwendungen

  • DSP core power supplies
  • Telecom and networking systems / Set-top boxes
  • Mid to high end servers

Weiterführende Informationen