DataSheetWiki


AS1138 fiches techniques PDF

Akros Silicon - 30W PoE PD and DC-DC Controller

Numéro de référence AS1138
Description 30W PoE PD and DC-DC Controller
Fabricant Akros Silicon 
Logo Akros Silicon 





1 Page

No Preview Available !





AS1138 fiche technique
AS1138 30W PoE PD and DC-DC Controller
GENERAL DESCRIPTION
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 surge
current from passing through sensitive circuits, such as the
Ethernet PHY. The device is designed to provide safe, low-
impedance discharge paths directly to the earth ground, resulting
in superior reliability and circuit protection.
FEATURES
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 filtering
for 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 ESD
Compliance
Integrated DC-DC controller for exceptional EMI performance
Programmable DC current limit up to 720mA for 30W
applications
Seamless support for local power, down to 9.5V
Implemented in robust 100V automotive process
Low Rds-on Hot-Swap FET (typical 0.8)
Integrated Short-Circuit Protection
Over temperature protection
Industrial temperature range, -40º to +85ºC
5x5 mm, 20 lead QFN Package, RoHS compliant
TYPICAL APPLICATIONS
Pan, tilt and zoom (PTZ), security and web cameras
Voice over IP (VoIP) phones
Wireless LAN access points, WiMAX terminals
Point-of-sale (PoS) terminals, RFID terminals
Thin clients and notebook computers
Fiber-to-the-home (FTTH) terminals
SIMPLIFIED APPLICATION DIAGRAM
Akros Silicon, Inc.
6399 San Ignacio Avenue, Suite 250, San Jose, CA 95119 USA
408.746.9000 www.AkrosSilicon.com

PagesPages 30
Télécharger [ AS1138 ]


Fiche technique recommandé

No Description détaillée Fabricant
AS1130 132-LED Cross-Plexing Driver ams
ams
AS1135 13W/30W IEEE 802.3af/at PoE Powered Device Akros Silicon
Akros Silicon
AS1138 30W PoE PD and DC-DC Controller Akros Silicon
Akros Silicon

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche