Kinetic Technology

AS1834

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

Topology: Flyback
Input Voltage (min.): 6.00 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 and I2C 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 L
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Bauform Version Montageart Samples
750311029 PDF
7447779003 PDF WE-PD SMT Power Inductor 3.3 3.3 4.5 26 30 55 7345 Robust
7440620015 PDF WE-TPC SMT Tiny Power Inductor 1.5 4.3 4 10 100 SMT
744053003 PDF WE-TPC SMT Tiny Power Inductor 3 2.8 2.5 20 70 SMT
7440650047 PDF WE-TPC SMT Tiny Power Inductor 4.7 4.6 4.2 16.5 40 SMT
7440650068 PDF WE-TPC SMT Tiny Power Inductor 6.8 4.2 3.6 25 30 SMT
744042004 PDF WE-TPC SMT Tiny Power Inductor 4.7 1.72 1.65 70 70 SMT
744043006 PDF
7440430022 PDF WE-TPC SMT Tiny Power Inductor 2.2 2.5 2.35 27 100 SMT