AS1454 Family | Product Brief

9-72VDC / 24VAC Isolated Digital Power SoC with Integrated GreenEdgeTM 2kV Isolation & Quad Outputs

The AS1454/44/34/24 are Quad-Output Digital Power SoCs for 9.5-72VDC & 24VAC isolated power applications. All are built on Akros’

integrated GreenEdgeTM 2kV digital isolation technology creating a flexible power platform that eliminates all opto-couplers and

minimizes component count and design footprint.

Synchronous converters with digital loop and timing control are integrated with digital isolation as part of an advance power system

architecture for high-efficiency and cost-effective designs. Selectable spread-spectrum clocking on all PWMs reduces the power supply

spectral noise for superior EMC performance. Bi-directional Isolated GPIO and isolated ADC ease system level design in many industrial

and medical applications.

Simplied Isolated Flyback

Application Diagram

Typical Applications

• Surveillance Cameras and Building Management Systems

• AutomotivePowerandInfotainmentSystems

• Industrial&MedicalEquipment

• TelecomBackplaneandDistributedPowerSystems

• Multi-railIsolatedFlybackandForwardPowerSupplies,<50W

Features

Digitally-Isolated Programmable Power

timing for high efficiency at both light and full loads

• Outputs#2and#3:FullyintegratedBuckRegulatorsw/2AFETs

• Output#4:DC-DCControllerforBuck,Boost,orLEDDriver

• HighcurrentcapabilityonOutputs#1and#4

• ProgrammablePWMFrequencies

Power Management

• Hardware-programmablestart-uppowersequencing

• IndividualoutputPower-Goodmanagement

• Voltagemarginingforeachoutput

to 2kVDC/1.5kVRMS

Power Bus

Architecture Overview

The AS14x4 uses a current-controlled DC/DC architecture and integrated 2kV digital isolation for a wide

input range (9.5V-72V) isolated high-efficiency primary converter with no opto-isolators. Integration

of multiple buck/boost regulators creates a full Power System-on-a-Chip (SoC) solution for electronic

equipmentsrequiringpowerinsub-50Wrange.

TypicallyusedinanisolatedFlybacktopology,theAS14x4includesoneprimary-to-secondarysynchronous

GreenEdge™ high-voltage and high-speed isolation technology. This eliminates the need for opto-isolators

in both power control loops and I2C/GPIO/ADC paths between these power planes.

Synchronous Primary DC-DC Converter

• GreenEdgeTM integrated sync-rectification

driver eliminates external transformer winding

• Higheciencyfromlighttofullload

• ProgrammablePowerFETtimingcontrol—

facilitates use of off the shelf transformers and

widerangeofpowerFETS

Synchronous Secondary Buck Regulators

• ProgrammablePWMfrequencies,synchronizedtoprimary-sideclock

• Hardwareprogrammablesoft-startandpowersequencing

• Multi-phasedclockingwithspread-spectrumforEMCmanagement

Akros Silicon

6399 San Ignacio

Ave, Suite 250,

San Jose,

CA 95119

Mode

Usage

AS1424 X Set Externally 1.25 ARMS <20W

AS1444 X Set Externally 2.0 ARMS <50W

AS1454 X X Set Externally 2.0 ARMS <50W

Development Tools

Akros Silicon provides a complete development kit including hardware evaluation board (EVB), a software

GUItoaccessAS14x4softwarefeatures,USB-I2C controller for ease of connecting the EVB or end product

to a PC, reference design schematics, BOM, layout and application guides.

AS14x4 Product Family