Kinetic Technology

AS1854

Digital Power PoE PD Controllers with HV Isolation and Quad DC-DC Outputs

Topology: Boost
Input Voltage (min.): 4.00 V
Input Voltage (max.): 48.00 V

Original publication on 2014-08-12, revision 3.9

Description

The AS18x4 product family integrates Akros GreenEdge™ Isolationtechnology with next generation Power-over-Ethernet (PoE) PD andpower conversion technology to deliver groundbreaking powerintegration, and enable a new range of Digital Power PoE PDcapabilities and solutions.A Type 1 (IEEE® 802.3af) and Type 2 (IEEE® 802.3at) compliant PDis integrated with high-voltage isolation and quad-output digitalpower DC-DC converters – resulting in a complete PoE & Powermanagement solution in a single device with minimal externalcomponents.In addition to enabling digital PoE power conversion, AkrosGreenEdge™ isolation enables direct digital management of bothisolated Primary power and Secondary system power for real timeend-to-end Green Power application capabilities.

Characteristics

  • PoE PD Controller
  • Type 1 and Type 2 IEEE® 802.3af & 802.3at Compliant PD
  • Automatic PoE-Plus (Type 2) detection in HW andI2C Modes
  • Low Resistance PD Power FET Switch (0.5 typical)
  • Primary‐Side DC‐DC Controller
  • High-efficiency DC-DC Controller with Digital Optimization
  • Primary-Secondary High-voltage integrated Digital Isolation
  • Programmable Primary Clock Frequency
  • Local-power operation down to 9.5V
  • Secondary‐Side Power Outputs
  • Programmable PWM Frequencies synched to External Clock
  • Output #1: Sync Controller with programmable power FETtiming for high efficiency at both light and full load
  • Outputs #2 & #3: Buck Regulators w/2A FETs
  • Output #4: DC-DC Controller for Buck, Boost, or LED Boostplatform applications

Products

Order Code SPEC Product series Samples
7491194331 PDF
750311029 PDF
750370045 PDF