RT9470

  POE PD Module ( Isolation Model)

Product Description

© 2012 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.

Features：

• RT9470_POE PD_SPEC_V1.1(1)

Applications：

• IP Cameras
• Wireless access point
• Security and alarm systems
• VOIP telephone
• Point of sale network terminal equipment

Description：

The RT9470 series of modules are designed to extract power from a conventional twisted pair Category 5 Ethernet cable, conforming to the IEEE 802.3af Power-over-Ethernet(PoE) standard.

The RT9470 signature and control circuit provides the PoE compatibility signature and

power classification required by the Power Sourcing Equipment (PSE) before applying up

to 15W power to the port. The RT9470 provides a Class classification programming.

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.

• RT9470 Product Selector

*At 25°C with VIN = 48V

** Maximum Output Power: means it not could be operated in continuous stage .only short-term of Boot up/Heavy loading

• Absolute Maximum Ratings

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.

• Recommended Operating Conditions

Note 1: With minimum load

     2: See Section Operating Temperature Range

      ** Extended use close to, or at the maximum operating temperature can reduce the life time of the device.

• Pin Description:

• DC Electrical Characteristics

Note 1: Typical figures are at 25°C with a nominal 48V supply and are for design aid only. Not Guaranteed

     2: The output ripple and noise can be reduced with an external filter, see application note.

     3: Continuous short circuit duration is applicable at 25'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.

• RT9470S Typical Connection Diagram:
• 
• RT9470 Typical Connection Diagram :
• 

• Reducing the output voltage, connect R2 between ADJ and +VDC
  	R2 Value	output voltage	R2 Value	output voltage
  RT9470-3.3V	open	3.3V	0R	2.8V
  RT9470-5V	open	5V	0R	4.4V
  RT9470-12V	open	12V	0R	9.9V
  RT9470-24V	open	24V	30K	18.2V
  Increasing the output voltage, connect R1 between ADJ and -VDC
  	R1 Value	output voltage	R1 Value	output voltage
  RT9470-3.3V	open	3.3V	0R	3.7V
  RT9470-5V	open	5V	0R	5.7V
  RT9470-12V	open	12V	0R	12.8V
  RT9470-24V	open	24V	0R	25.5V

  • Poe classification programming table .

  CLASS	Programming	Min Power	Max Power
  	Resistance (Ohms)	(W)	(W)
  0	Do not fit	0.44	12.95
  1	698	0.44	3.84
  2	383	3.84	6.49
  3	243	6.49	12.95
  4	TBD	Reserved	Reserved

   

  • Reliability MTBF:

  About the life time ,we design according to the following:

  1)  life time of RT9470  : 100,000 hours @ 25°C

   

  • Safety test items & test report

  Test Requested	Test result
  Electric strength -1500Vrms at 50 to 60Hz for 60s, applied as specified in subclasuse 5.2.2 of IEC 60950	Pass

• • Mechanical / Environmental Performance data

  Mechanical / Environmental Performance data
  	Item	Requirement and Standard
  1	Resistance to Wave Soldering Heat	max Preheat Temp range & time 120 ℃ / 180S max soldering temp &time:265 ℃ / 4S
  2	Solder ability	Solder able area shall have minimum of 95% solder coverage. And then into solder bath,Temperature at 245 ±5 ℃   , for 4-5sec.
  3	Hand Soldering Temperature Resistance	T  > =350 ℃   , 3sec at least.
  4	Thermal Shock	subject to follow condition for 5 cycles.1 cycles: -55 ℃    , 30 minutes +85 ℃    , 30 minutes
  5	Humidity(Temp Cycling)	less than 95% (non-condensing) ( -20 to 70 ℃)
  6	Temperature Life	temperature life at 85℃     for 96 hours.
  7	Salt Spray	connectors to 5% salt-solution concentration, 35 ℃ Gold flash for 8 hours there will be no change in the gold layer

• RT9470 Package Size： (mm )
• 
• RT9470 PCB Decal ： (mm )
• 
• • Packaging type & Quantity

  EPE or BLASTIC Packaging,  

  55pcs/ dish    

  550pcs/box    Box size 30*35*20cm  7KG/box