Alpha & Omega Semiconductor AOZ1022DI

Description

The AOZ1022DI evaluation board is a fully assembled and tested circuit board built with the AOZ1022DI buck regulator IC. It outputs an adjustable voltage up to 3A of continuous current. The evaluation board requires aninput voltage from 4.5 to 16V. The output voltage is preset at 3.3V and can be adjusted down to 0.8V.The AOZ1022DI-EVB circuit has features like current limit, short circuit protection, input under voltage lock out, internal soft start and thermal shut down. It operates at a fixed 500kHz switching frequency.Theintegratedinternal MOSFETs minimize component count, board area and total cost.The AOZ1022DI-EVB demonstrates the simple buck converter design. Only one resistor value change is needed for different output voltage designs. The AOZ1022DI-EVB also supports single layer board design.

Features

• 4.5V to 16V operating input voltage range
• Synchronous rectification: 100mΩ internal high-side switch and 20mΩ Internal low-side switch
• High efficiency: up to 95%
• Internal soft start
• Active high power good state
• Output voltage adjustable to 0.8V
• 3A continuous output current
• Fixed 500kHz PWM operation
• Cycle-by-cycle current limit
• Pre-bias start-up
• Short-circuit protection
• Thermal shutdown
• Small size DFN 5x4

Typical applications

• Telecom/networking/datacom equipment
• Point of load DC-DC conversion
• PCIe graphics cards
• Cable modems
• DVD drives and HDD
• LCD panels
• Set top boxes

More information

• Datasheet
• IC product information