Alpha & Omega Semiconductor

Demoboard AOZ1021AI-EVB

EZBuck™ 3A Synchronous Buck Regulator Evaluation Board Note

Topologie: Buck
Eingangsspannung (min.): 4.50 V
Eingangsspannung (max.): 16.00 V
Ausgang 1: 3.30 V / 3.000 A

Erstveröffentlichung am 21.07.2009, Version 1.1


The AOZ1021AI evaluation board is a fully assembledand tested circuit board built with the AOZ1021AI buckregulator IC. It outputs an adjustable voltage up to 3A ofcontinuous current. The evaluation board requires aninput voltage from 4.5 to 16V. The output voltage ispreset at 3.3V and can be adjusted down to 0.8V.The AOZ1021AI-EVB circuit has features like currentlimit, short circuit protection, input under voltage lock out,internal soft start and thermal shut down. It operates at afixed 500kHz switching frequency. The integratedinternal MOSFETs minimize component count, boardarea and total cost.The AOZ1021AI-EVB demonstrates the simple buckconverter design. Only one resistor value change isneeded for different output voltage designs. TheAOZ1021AI-EVB also supports single layer boarddesign.


  • 4.5V to 16V operating input voltage rangeOutput voltage preset to 3.3V, adjustable to as low as0.8V3A continuous output currentFixed 500kHz PWM operationInternal soft startCycle-by-cycle current limitShort-circuit protectionThermal shutdownEnables single layer board design


  Artikel Nr. SPEC Produktserie L
RDC typ.
RDC max.
Montageart Muster
74456047 PDF WE-PD4 SMT-Speicherdrossel 4.7 5 6 0.015 0.019 38 SMT