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IC-Hersteller Kinetic Technology

Kinetic Technology AS1138

30W PoE PD and DC-DC Controller

Details

TopologieAbwärtswandler
Eingangsspannung41-57 V
Schaltfrequenz80-550 kHz
Ausgang 13.24 V / 6.8 A
IC-Revision1.9

Beschreibung

The AS1138 is a single-chip, highly integrated CMOS solution for Power over Ethernet (PoE) Powered Devices requiring input power of up to 30Watts. Applications include Voice over IP (VoIP) Phones, Wireless LAN Access Point, Security Cameras, WiMAX Terminals, Point-of-Sales Terminals, RFID Readers, Thin Clients and Notebook computers.The AS1138 integrates input surge protection, a PD controller and a low-emission DC-DC controller. The AS1138 implements all of the physical layer Powered Device (PD) functionality, as required by IEEE® 802.3af-2005 and IEEE® 802.3at-2009 standards. This includes 2-event classification, Type 2 PSE detection indicator (ATDET), PD detection, under-voltage lock out (UVLO), and Hot- Swap FET integration.The AS1138 has been architected to address both EM emission concerns and surge/over-voltage protection in PoE applications. The chip implements many design features that minimize transmission of system common-mode noise onto the Unshielded Twisted Pair (UTP). On-chip integration of surge protection provides faster response to surge events and limits stray surgecurrent from passing through sensitive circuits, such as the Ethernet PHY. The device is designed to provide safe, lowimpedance discharge paths directly to the earth ground, resulting in superior reliability and circuit protection.

Eigenschaften

  • Full support of both IEEE® Std. 802.3af-2005 and IEEE®Std. 802.3at-2009 power requirements
  • “2-Event” classification for 802.3at higher power PDs

 Robust Type 2 PSE detector with proprietary digital filteringfor line noise to eliminate false positives IEC 61000-4-2/3/4/5/6 requirements for EMC Compliance Integrated Surge Protection for 15kV/8kV System level ESDCompliance Integrated DC-DC controller for exceptional EMI performance Programmable DC current limit up to 720mA for 30Wapplications Seamless support for local power, down to 9.5V Implemented in robust 100V automotive process Low Rds-on Hot-Swap FET (typical 0.8Ω) Integrated Short-Circuit Protection Over temperature protection Industrial temperature range, -40º to +85ºC 5x5 mm, 20 lead QFN Package, RoHS compliant

Typische Anwendungen

  • Point-of-sale (PoS) terminals, RFID terminals
  • Wireless LAN access points, WiMAX terminals
  • Voice over IP (VoIP) phones
  • Pan, tilt and zoom (PTZ), security and web cameras
  • Thin clients and notebook computers
  • Fiber-to-the-home (FTTH) terminals

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieVersionVinVOut1
(V)
IOut1
(A)
Vaux
(V)
L
(µH)
NPRI : NSEC : NAUXISAT
(A)
VT
(V (AC))
fswitch
(kHz)
L
(mm)
W
(mm)
H
(mm)
MontageartBauformIR
(A)
RDC
(mΩ)
fres
(MHz)
Muster
750310031SPEC
5 Dateien MID-POE Power Over Ethernet Transformers Flyback 33 - 57 V (DC) 12 0.58 8 264 3.49:1:0.71 1500 200 13.34 15.24 11.43 SMT EP10
744043100SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 10 1 4.8 4.8 2.8 SMT 4828 1.19 95 40
Artikel Nr. Daten­blatt Simu­lation
750310031SPEC
744043100SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieVersionVinVOut1
(V)
IOut1
(A)
Vaux
(V)
L
(µH)
NPRI : NSEC : NAUXISAT
(A)
VT
(V (AC))
fswitch
(kHz)
L
(mm)
W
(mm)
H
(mm)
MontageartBauformIR
(A)
RDC
(mΩ)
fres
(MHz)
Muster