AT POE PD Module ( Isolation Model)
LI xiao yan
LI xiao yan
Optimize for tablet applications
LI xiao yan
© 2015 Shenzhen Ring&tone Electronic Technology Co., Ltd. All rights reserved.
This document contains proprietary information of ring&tone and is not to be disclosed or used without the prior written permission of ring&tone.
Due to update and improvement of ring&tone products and technologies, information in this document is subjected to change without notice.
·IEEE802.3at and IEEE802.3af compliant
·Maximum 30W output power
·Input voltage range 36V to 57V
·Integral high efficiency DC/DC converter.
·Low output ripple and noise
·High performance with low price
·Transformer isolation ,1500V isolation (input to output)
·Easy to use, with a minimum number of external components.
·Wireless access point
·Security and alarm systems
·Point of sale network terminal equipment
The 万博全站官网-万博全站手机下载 series of modules are designed to extract power from a conventional
twisted pair Category 5 Ethernet cable, conforming to the IEEE 802.3af and IEEE 802.3at Power-over-Ethernet(PoE) standard.
The 万博全站官网-万博全站手机下载 signature and control circuit provides the PoE compatibility signature and
power classification required by the Power Sourcing Equipment (PSE) before applying up
to 30W power to the port.
The DC/DC converter operates over a wide input voltage range and provides a regulated
output. The DC/DC converter also has built-in short-circuit output protection.
l 万博全站官网-万博全站手机下载 Product Selector
Maximum Output Power*
*At25°Cwith VIN = 54V Short-term or low-temperature environment.
l Pin Description:
Connector and Pin Description
RX Input (1). This input pin is used in conjunction with VA2 and
connects to the centre tap of the transformer connected to pins 1
& 2 of the RJ45 connector (RX) - it is not polarity sensitive.
TX Input (2). This input pin is used in conjunction with VA1 and
connects to the centre tap of the transformer connected to pins 3
& 6 of the RJ45 connector (TX) - it is not polarity sensitive.
Direct Input (1). This input pin is used in conjunction with VB2 and connects to pin 4 & 5 of the RJ45 connector - it is not polarity
Direct Input (2). This input pin is used in conjunction with VB1 and connects to pin 7 & 8 of the RJ45 connector - it is not polarity
DC output +12V
DC Return -12V
l Absolute Maximum Ratings
DC Supply Voltage
DC Supply Voltage Surge for 1ms
Note 1: Exceeding the above ratings may cause permanent damage to the product. Functional operation under these conditions is not implied. Maximum ratings assume free airflow.
l Recommended Operating Conditions
Input Supply Voltage1
Under Voltage Lockout
Ta / OC
Ta / °C
Note 1: With minimum load
2: See Section OperatingTemperatureRange
** Extended use close to, or at the maximum operating temperature can reduce the life time of the device.
l DC Electrical Characteristics
Nominal Output Voltage
@ 50% Load
Output Ripple and Noise
@ Max load2
Efficiency @ 80% Load
Isolation Voltage (I/O)
l Power Classification
The 万博全站官网-万博全站手机下载 classification is fixed at Class 4, this means that an IEEE802.3at Type 1 or an IEEE802.3af PSE will defaul
Add: A-5F, Project B, hengbang Science Park, shutianpu community, Matian street, Guangming District, Shenzhen