Features：

• Small package
• Compliant with IEEE802.3 at & af
• Low cost
• Output power up to 30W 
• Minimal (low cost) external
• components required
• Over-current and short circuitprotection
• Available in Industrial Temperatureversion.
• Internal integrated boost conversion circuit, matching POE output

Applications：

• PoE power supply system

Description：

The RT6136 is a single channel Power Sourcing Equipment (PSE) module designed for

use in Power over Ethernet (PoE) applications for a wide range of power levels from 15.4W (IEEE802.3af) up to 30W (IEEE802.3At) proprietary power levels.

The RT6136 is capable of delivering up 30W ,The RT6136 is aimed at applications requiring PSE functionality such as CCTV DVR, home networking and industrial ethernet.

RT6136 is a self-contained module, requiring just a few external components to provide a

great deal of control and feedback over each Powered Device (PD) that is connected to

the PSE.

• RT6136  Product Selector

• Signature and Classification

The RT6136 will automatically perform the Signature and Classification, the timing sequence for a Type 1 Powered Device (PD) and  the timing sequence for a Type 2 PD.

In the ‘IEEE802.3bt’ classification the first pulse is much longer. This is to indicate to the PD that  implements the bt specification’s lower Maintain Power Signature (MPS) requirements (see section 5.6 below for details of MPS). Additionally if  is set in ‘BT 1 pair’ or ‘BT Type 3’ modes the  will produce a third class pulse looking for a change in class current presented. If the current changes correctly  will produce 1 further pulse which indicates to the PD the requested power  (>30W) has been granted. After classification is complete the will begin to power up its output with the current limit selected based on the detected class and mode of the module.

• 1 Signature Detection

To ensure that the RT6136 does not apply power to a non PoE enabled device the Port output first checks for a valid PoE signature. The PD should present a nominal 25kΩ (23.75kΩ to 26.25kΩ) Signature resistance; if the RT6136 does not see a valid signature then it will disconnect, wait approximately 2 seconds then try again, see Figure 7 below.

• 2 Classification

On completion of a valid signature, the RT6136 will then interrogate the PD to see if a classification signature is present. The classification signature is used to determine the amount of power the PD will draw and limits the output power accordingly (see Table 2). It is optional for the PD to present a classification signature and the RT6136 will default to Class 0 if the PD does not present one.

Table shows the measured current limits that the RT6136 uses to assign a classification value.

• Input Protection

The RT6136 has built-in Tranzorb diode across its input, to protect the module from transients from the power supply.

• 3 Maintain Power Signature

On successful completion of a valid signature (and classification) the RT6136 will apply main power to the Port output..

Once main power has been applied, the RT6136 with constantly monitor the PD to ensure that it is still connected; this is referred to as the Maintain Power Signature (MPS).

The RT6136 uses the dc detection method of MPS and will remove power if the current drawn falls below the detect threshold. If the RT6136 Port output current is ≥10mA the output will remain on. If the Port output current is ≤ 5mA the output will be turned off and the     RT6136 will return to the signature cycle (looking for a valid signature).

• Output Current Limits

The RT6136 has two over current limits - Current Limit 1* and Current Limit 2*.

The RT6136 will allow the Port output to exceed Current Limit 1 (but not Current Limit 2) for a short duration – TLIM1*. If the Port output continues to exceed Current Limit 1; the output power will be removed

If the output exceeds Current Limit 2, the RT6136 will remove power (without waiting for TLIM)

• Output Power

The RT6136 is capable of delivering up to 30W, when supplied with its maximum input voltage of 57V.

Please note this is not the power available at the input of the Powered Device (PD). There are cable, connector and polarity protection losses to be taking into account.

• Output Short-Circuit Protection

In addition to the over-current protection the RT6136 has built-in output short-circuit protection.

If the Port output is shorted, the RT6136 will limit the current and remove the power

• 1 Absolute Maximum Ratings1

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

• Pin Description:

• RT6136Poe at/af pse Connection 100M Internet:

• RT6136Poe at/af pse Connection 1000M Internet:

• Input Power Supplies

The RT6136 only requires one power supply; to conform to the IEEE802.3 at af specification, this supply must be isolated from mains ground

• Reliability MTBF:

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

• life time of RT6136  : 100,000 hours @ 25°C

• Mechanical / Environmental Performance data

• RT6136 PackageSize： (mm )

• Packaging type & Quantity

EPE or BLASTIC Packaging,  

50pcs/ dish    

500pcs/box    Box size 30*35*20cm  4KG/box