RT7652

  • IEEE802.3at and IEEE802.3af compliant
  • Maximum 12V 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
  • Short-circuit protection
  • Transformer isolation ,1500V isolation (input to output)
  • Easy to use, with a minimum number of external components.
  • Integrated 100M LAN Filters
  • IEC 61000-4-2 Level 4 (8KV/15KV) ESD protection
  • IEC 61000-4-5 Level 3 SURGE LEVEL :10/700μs 40ohm 4KV---Optional

 

Related products

 
 

RT7652

  30W POE PD Module ( Isolation Model)

Product Description

Version

Date

Author

Approved By

Remarks

V1.0

2019/2/14

LI xiao yan

Rock

 12V Base on RT7650B

 

 

 

 

 

 

 

 

 

 

© 2019 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

  • IEEE802.3at and IEEE802.3af compliant
  • Maximum 12V 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
  • Short-circuit protection
  • Transformer isolation ,1500V isolation (input to output)
  • Easy to use, with a minimum number of external components.
  • Integrated 100M LAN Filters
  • IEC 61000-4-2 Level 4 (8KV/15KV) ESD protection
  • IEC 61000-4-5 Level 3 SURGE LEVEL :10/700μs 40ohm 4KV---Optional

Applications

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

Description

The RT7652 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 RT7652 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.

  • Product Selector

 

Part Number

Nominal Output *

Maximum Output Power*

ESD protection

Surge Level

CM

Surge Level

DM

Marking

Package

RT7652 -1

12V 2A

30W

YES

1KV

1KV

RT7650

38*38

RT7652 -2

12V 2A

30W

YES

2KV

2KV

RT7650

38*38

RT7652 -4

12V 2A

30W

YES

4KV

4KV

RT7650

38*38

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*At 25°C with VIN = 54V

  • Power Classification

The RT7652 classification is fixed at Class 4, this means that an IEEE802.3at Type 1 or an IEEE802.3af PSE will default to Class 0. However an IEEE802.3at PSE will recognise the Class 4 as a Type 2 PD.

 

  • RT7652 Pin Description:

Connector and Pin Description

J1

POE_IN 1  1.25mm Connector

1

 Ethernet cable 1

2

 Ethernet cable 2

3

 Ethernet cable 3

4

 Ethernet cable 6

5

LED+ Internal Connector J3 5pin

6

LED- Internal Connector J3 6pin

 

 

J2

POE_IN 2  1.25mm Connector

1

DC Auxiliary input 12V+

2

DC Auxiliary input 12V-

3

 Ethernet cable spare pair 4,5

4

 Ethernet cable spare pair 7,8

 

 

J3

OUT (Split putout) 1.25mm Connector

1

 Ethernet cable 1

2

 Ethernet cable 2

3

 Ethernet cable 3

4

 Ethernet cable 6

5

LED+ Internal Connector J1 5pin

 6

LED- Internal Connector J1 6pin

7

12V Output +

8

12V Output -

 

 

J4

DC out 2 2.0mm Connector

1

12V Output +

2

12V Output -

 

 

  • Absolute Maximum Ratings

 

Parameter

Symbol

Min

Max

Units

1

DC Supply Voltage

VCC

-0.3

60

V

2

DC Supply Voltage Surge for 1ms

VSURGE

-0.6

80

V

3

Storage Temperature

TS

-40

100

OC

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

 

Parameter

Symbol

Min

Typ

Max

Units

1

Input Supply Voltage1

VIN

36

48

57

V

2

Under Voltage Lockout

VLOCK

30

 

36

V

3

Operating Temperature2

TOP

-20

25

70

Ta / OC

 

 

4

Operating Temperature

30W Continuous

24W Continuous

14W Continuous

 

 

TOP

 

 

 

-40

 

 

 

25

 

50

70

85

 

 

 

Ta / °C

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.

  • DC Electrical Characteristics

 

DC Characteristic

Sym

Min

Typ1

Max

Units

Test Comments

1

Nominal Output Voltage

+VDC

11.5

12.0

12.5

V

12V

 

 

 

 

 

 

 

 

2

Line Regulation

VLINE

 

0.1

 

%

@ 50% Load

3

Load Regulation

VLOAD

 

1

 

%

@ VIN=48V

4

Output Ripple and Noise

VRN

 

180

 

mVp-p

@ Max load2

5

Minimum Load

RLOAD

200

 

 

mA

 

6

Short-Circuit Duration3

TSC

 

 

sec

 

7

Efficiency @ 80% Load

EFF

 

86

 

%

 

 

 

 

 

 

 

 

 

8

Isolation Voltage (I/O)

VISO

 

1500

 

VPK

Impulse Test

9

Temperature Coefficient

TC

 

0.02

 

%

Per OC

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.

  • RT7652 Package Size   (mm±3mm )
  • Updated.....
  • RT7652 Typical Connection Diagram :
  • Updated.....