RT30D04A
The RT30D04A 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 RT30D04A 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.
The RT30D04A 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 RT30D04A 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.
RT30D04A
High Efficiency
30W POE PD Module ( Isolation Model)
Product Description
Version
Date
Author
Approved By
Remarks
V2.0
2023/7/1
LI xiao yan
Rock
© 2023 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：
Applications：
Description：
The RT30D04A 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 RT30D04A 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.
Part Number
Output *
Maximum Output Power*
AT-DET LED
Integrated bridge
Power structure
Marking
Package
RT5400A-5V
5V
25W
Peak 30W
YES
NO
Forward
5V
DIP
RT5400A-12V
12V
30W
YES
NO
Forward
12V
DIP
RT5400A-24V
24V
30W
YES
NO
Forward
24V
DIP
*At 25°C with VIN = 54V
Pin #
Name
Description
1
VIN+
POE Direct Input +. This pin connects to the positive (+) output of the POE input bridge rectifiers.
2
VIN-
POE Direct Input -. This pin connects to the negative (-) output of the POE input bridge rectifiers.
3
AT-DET-
AT Detect Output. This pin indicates if an IEEE802.3at PSE is supplying power to the RT5400A.
4
CAP-
Internal cap-, need Match Dynamic load ,connecting external cap- ,47uf 100v OR NC
5
NC
not connected
6
NC
not connected
7
-VDC
DC Return. This pin is the return path for the +VDC output.
8
+VDC
DC Output. This pin provides the regulated output from the DC/DC converter.
9
ADJ
Output Adjust. The output voltage can be adjusted from is nominal value, by connecting an external resistor from this pin to either the +VDC pin or the -VDC pin.
10
-VDC
DC Return. This pin is the return path for the +VDC output.
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.
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
TOP
-40
-40
25
25
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 Characteristic
Sym
Min
Typ1
Max
Units
Test Comments
1
Nominal Output Voltage
+VDC
11.5
12.0
12.5
V
12V
Nominal Output Voltage
+VDC
4.75
5.0
5.25
V
5V
2
Line Regulation
VLINE
0.1
%
@ 50% Load
3
Load Regulation
VLOAD
1
%
@ VIN=48V
4
Output Ripple and Noise 2
VRN
180
mVp-p
@ Max load2
5
Minimum Load 3
RLOAD
200
200
100
mA
@ 5V out
@ 12V out
@ 24V out
6
Short-Circuit Duration
TSC
∞
sec
7
Efficiency 5V out
EFF
91
%
Efficiency 12V out
EFF
93
%
Efficiency 24V out
EFF
92
%
8
Isolation Voltage (I/O)
VISO
1500
VPK
Impulse Test
9
Temperature Coefficient
TC
0.02
%
Per OC
Note1: Typical figures are at 25°C with a nominal 52V 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: The module can emit an audible noise if operated at less than the specified minimum load and may cause the PSE to fail its MPS .
The RT5400A 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.
Reducing the output voltage, connect R2 between ADJ and +VDC
R2 Value
output voltage
R2 Value
output voltage
RT5400A-5V
open
5V
68K
4.7V
RT5400A-12V
open
12V
68K
10.8V
RT5400A-24V
open
24V
68K
21.6V
Increasing the output voltage, connect R1 between ADJ and -VDC
R1 Value
output voltage
R1 Value
output voltage
RT5400A-5V
open
5V
0R
5.8V
RT5400A-12V
open
12V
0R
12.8V
RT5400A-24V
open
24V
0R
24.8V
*Note: It is important that the minimum output adjust is not taken below 10.8V (12V Nominal) and 21.6V (24V Nominal). Setting the output voltage below this level may result in the module being permanently damaged.
