New Industry Products

AOS Debuts Buck Regulators for Intel’s Rocket Lake Platform

April 22, 2021 by Gary Elinoff

The compact EZBuck regulators generate 12 amps at the specific voltages required by the Intel CPU’s VCCIO rails

The Alpha and Omega Semiconductors’ (AOS) AOZ2263VQI-01 and AOZ2263VQI-02 are application specific buck regulators that take up only 16 mm2 of board space and operate from inputs ranging from 4 to 28 volts.


Typical application for the AOZ2263VQI-01 or the AOZ2263VQI-02. Image courtesy of the AOZ2263VQI-01 Datasheet
Typical application for the AOZ2263VQI-01 or the AOZ2263VQI-02. Image courtesy of the AOZ2263VQI-01 Datasheet


The new application specific buck regulators are said to “offer the industry’s most compact footprint to support VCCIO rails in Intel Rocket Lake platforms used in desktop computing system.” Additionally, both units have also passed all the validation requirements listed in Intel’s Rocket Lake Platform component list. This assures both OEMs and their customers that the devices have successfully undergone all the testing required to comply with Intel specifications. 

As per Wayne Lee, Power IC Marketing at AOS, “The current capability offered by the AOZ2263VQI-01 and the AOZ2263VQI-02 offers designers an easy-to-use solution to support Intel Rocket Lake’s platform.” he goes on to state that, “In today’s ever shrinking desktop motherboard form factors, PCB real estate is at a premium. Utilizing AOS’s EZBuck regulator platform technology enables AOS to solve the system designer’s problem of ever-shrinking PCB real estate.”


Adjustable Output Voltages

Intel’s Rocket Lake platform VCCIO rails demand different voltages depending on mode. As such, both of these EZBuck regulators feature two input pins, dubbed VID0 and VID1, that are used to specify VCCIO rails. For the AOZ2263VQI-01, these two digital input pins can mandate 1.05, 1.075, 1.1 or 1.125 volt outputs. The AOZ2263VQI-02 offers 0.8, 0.95, 1.0 or 1.05 volts, again chosen by its VID0 and VID1 inputs. All outputs are at 12 amps.


Important Features

There is a low power mode (LPM) pin that enables the lowering of the VCCIO rail voltages down to 0V. This allows for minimizing overall system power consumption during idle mode or standby. 

The devices both feature low RDS(ON) N-channel FETS. The figures for the high side and low side  FETs are 11 and 7 mΩ, respectively. The units feature an internal bootstrap diode.

Typical low power mode and shutdown currents are 70 and 1 µA, respectively.

The EZBuck devices require only small-sized ceramic capacitors to provide stable and low voltage ripple operation, which provides for even more reduction in cost, board space and weight.

The highly integrated devices feature:  

  • A power good (PGOOD) output
  • An integrated bootstrap diode
  • Integrated soft start


Protection features include:

  • Current limiting on a cycle-by-cycle basis
  • Short-circuit protection (SCP)
  • Thermal shutdown
  • Overvoltage Protection (OVP)


Other Critical Parameters:

  • Operating frequencies 600 kHz typical and 700kHx maximum
  • Package thermal resistances, junction to ambient (ΘJA) and junction to case (ΘJC), are 32°C/W and 4°C/W, respectively



  • Servers
  • Point of load dc/dc converters
  • Telecom/Networking/Datacom equipment
  • LCD TVs
  • Compact desktop PCs
  • Portable computers
  • Cable modems
  • Graphics cards
  • Set top boxes


Physical and Environmental Concerns

  • Both regulators are offered in a thermally enhanced 22-pin 4m×4m QFN packages
  • Ambient operating temperature range is from -40 to +85°C
  • RoHS compliant


Regulatory and Safety

Electrostatic discharge rating is ±2000 and ±1000 volts as per the Human body model (HBM) and the charged device model (CDM), respectively.