© 2016 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：

• IEEE802.3af ,IEEE802.3at,IEEE802.3bt(Draft V3.2) compliant
• Maximum 60W 12v or 24voutput power
• Input voltage range 52V to 57V(60W),
• Integral high efficiency DC/DC converter.
• Low output ripple and noise
• High performance with low price
• Short-circuit protection
• Transformer isolation,1500V isolation (input to output)
• Easy to use, with a minimum number of external components.

Applications：

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

Description：

The RT7670 signature and control circuit provides the PoE compatibility signature and

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

to 60W power to the port. It has been designed to work with existing high power PSE’s from leading manufacturers.

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.

RT7670 Product Selector

*At 25°C with VIN = 52V

60W need forced air or metal heatsink/ enclosure

Pin Description:

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

• 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.

• RT7670-CON Typical Connection Diagram 1000M Ethernet :

• RT7670-CON-BR Typical Connection Diagram 1000M Ethernet :
• 

• RT7670-DIP Typical Connection Diagram 1000M Ethernet :

• Power Classification

The RT7670 is Type 4 - Class 8 PD requesting the highest nominal amount of power from an IEEE802.3bt PSE  If the RT7670 is connected to an IEEE802.3at PSE, the PSE will recognise the initial Class 4 pulse from the as a Type 2 PD and provide ~25W.

• PD Signature

The RT7670 input complies with the IEEE802.3af specification. When the inputs are connected to a Power Sourcing Equipment (PSE), they will automatically present a Powered Device (PD) signature to the PSE (when requested). The equipment will then recognise that a PD is connected to that line and supply power.

The J1  S1 S2 pins must be connected together when used with a Phihong POE80U or POE60U PSE.

• Operating Temperature Range

It is important to remember that RT7670 is a power supply, and as such careful consideration should be taken over the mechanical design of the host product, with provision for heat sinking and/or forced air cooling.

At full power the RT7670 will generate heat. The device has been designed to be used with heatsink plate or thermally connected to the chassis of the host equipment, or cooled with forced air.

• About cooling

RT7670  if work At full power 60W putout ,need forced air or metal heatsink/ enclosure

1. Air flow: Min2.2 CFM

• Package： (mm   ±3mm )

• RT7670-CON PackageSize： (mm   ±3mm )

• RT7670-DIP PackageSize： (mm   ±3mm )