RT W POE PD Module ( Isolation Model) Product Description

Transcription

1 RT700 0W POE PD Module ( Isolation Model) Product Description Version Date Author Approved By Remarks V.0 0// LI xiao yan Rock V. 0/5/7 LI xiao yan Rock 0 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.

2 RT700 POE PD Module Description Features: IEEE0.at and IEEE0.af compliant Maximum 0W output power Input voltage range 6V to 57V Integral high efficiency DC/DC converter. Low output ripple and noise High performance with low price Short-circuit protection Adjustable Output Transformer isolation,500v isolation (input to output) Easy to use, with a minimum number of external components. Applications: IP Cameras Wireless access point Security and alarm systems VOIP telephone Point of sale network terminal equipment Description: The RT700 series of modules are designed to extract power from a conventional twisted pair Category 5 Ethernet cable, conforming to the IEEE 0.af and IEEE 0.at Power-over-Ethernet(PoE) standard. The RT700 signature and control circuit provides the PoE compatibility signature and power classification required by the Power Sourcing Equipment (PSE) before applying up to 0W 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 Shenzhen Ring&tone Electronic Technology Co., Ltd. MSN:djjzhanghua@hotmail.com rock@r-tone.com QQ:0690

3 RT700 POE PD Module Description RT700 Product Selector Part Number Nominal Output Voltage Maximum Output Power* Marking Package RT700 V 0W V DIP *At 5 C with VIN = V Pin Description: J Pin # Name Description VIN- POE Direct Input -. This pin connects to the negative (-) output of the POE input bridge rectifiers. This pin is internally connected to pin 6. AT-DET AT Detect Output. This pin indicates if an IEEE0.at PSE is supplying power to the RT700. POE Direct Input +. This pin connects to the positive (+) output of the POE input VIN+ bridge rectifiers. 5 NC No Connection. Do not connect to this pin. 6 VIN- POE Direct Input -. This pin connects to the negative (-) output of the POE input bridge rectifiers. This pin is internally connected to pin. J Pin # Name Description 7 Negative DC Output. These pins are internally connected and provide the VDC- negative regulated output from the RT ADJ Output Adjust. The output voltage can be adjusted from its nominal value, by connecting an external resistor from this pin to either the VDC+ pin or the VDCpin. 0 Positive DC Output. These pins are internally connected and provide the positive VDC+ regulated output from the RT Shenzhen Ring&tone Electronic Technology Co., Ltd. MSN:djjzhanghua@hotmail.com rock@r-tone.com QQ:0690

4 RT700 POE PD Module Description Absolute Maximum Ratings Parameter Symbol Min Max Units DC Supply Voltage VCC V DC Supply Voltage Surge for ms VSURGE V Storage Temperature TS O C Note : Exceeding the above ratings may cause permanent damage to the product. Functional operation under these conditions is not implied. Maximum ratings assume free airflow. Recommended Operating Conditions Parameter Symbol Min Typ Max Units Input Supply Voltage VIN 6 57 V Under Voltage Lockout VLOCK 0 6 V Operating Temperature TOP Ta / O C Operating Temperature 0W Continuous W Continuous W Continuous Note : With minimum load TOP : See Section Operating Temperature Range Ta / C ** Extended use close to, or at the maximum operating temperature can reduce the life time of the device. DC Electrical Characteristics DC Characteristic Sym Min Typ Max Units Test Comments Nominal Output Voltage +VDC V Line Regulation VLINE 0. 50% Load Load Regulation VLOAD VIN=V Output Ripple and Noise VRN 0 Max load 5 Minimum Load RLOAD 00 ma 6 Short-Circuit Duration TSC sec 7 0% Load EFF 7 % Isolation Voltage (I/O) VISO 500 VPK Impulse Test 9 Temperature Coefficient TC 0.0 % Per O C Note : Typical figures are at 5 C with a nominal V supply and are for design aid only. Not Guaranteed : The output ripple and noise can be reduced with an external filter, see application note. : Continuous short circuit duration is applicable at 5'C ambient temperature in free air. At higher temperatures or with restricted airflow (e.g. in a sealed enclosure) the duration will need to be limited to avoid overheating Shenzhen Ring&tone Electronic Technology Co., Ltd. MSN:djjzhanghua@hotmail.com rock@r-tone.com QQ:0690

5 RT700 POE PD Module Description RT700 Typical Connection Diagram: VIN- RJ5 TD+ TDCT TD TX+ TXCT 6 5 MSB5M or DB57S SMAJ5A 5 TX- VIN- AT-DET VIN+ VIN+ VDC+ VDC+ ADJ VDC- VDC- RT700 0W PD Module V OUT R 000UF R 6 RD+ RX+ VCC 7 RDCT RXCT 0 RD- RX- 9 MSB5M or DB57S 6 PC7 Photocoupler GPIO Reducing the output voltage, connect R between ADJ and +VDC R Value output voltage R Value output voltage RT700-V open V 00K 0.7V Increasing the output voltage, connect R between ADJ and -VDC R Value output voltage R Value output voltage RT700-V open V 0R.7V Power Classification The RT700 classification is fixed at Class, this means that an IEEE0.at Type or an IEEE0.af PSE will default to Class 0. However an IEEE0.at PSE will recognise the Class as a Type PD. AT Detection The RT700 has an AT-DET output pin which is used to detect a Two Event Physical Layer classification as described in IEEE0.at. If required the AT-DET pin can be connected directly to an opto-coupler. If the RT700 detects a Two Event Physical Layer classification, the (AT True) switch will close and Opto will turn ON. Opto will be connected across the isolation barrier and the output collector can be connected to a controller (with a pull-up resistor connected to the controller s power rail). When Opto is ON the collector (output) will be Logic 0, the controller will then know that the PSE is capable of delivering over 5.W. To complete the protocol the controller should then confirm that it is a Type PD over the Data Link Layer* Shenzhen Ring&tone Electronic Technology Co., Ltd. MSN:djjzhanghua@hotmail.com rock@r-tone.com QQ:0690

6 RT700 POE PD Module Description If the RT700 detects a Single Event Physical Layer classification, Opto will be OFF and the output collector will be Logic (via pull-up resistor). The controller should then assume that the PSE is limited to delivering up to 5.W. If the PSE does not support the Physical Layer classification, Opto will be OFF. The RT700 will operate with non IEEE0.at compliant POE+ PSE s. *Note: There are several PSEs (including Cisco) that will only delivery 5.W until they receive Type PD confirmation, over the Data Link Layer. Package Size: (mm ±0.mm ) Top View mm.5mm J RT700 J.6mm.5mm PCB Decal : (mm ±0.mm ) Shenzhen Ring&tone Electronic Technology Co., Ltd. MSN:djjzhanghua@hotmail.com rock@r-tone.com QQ:0690