RT5400A

The RT5400A 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 RT5400A 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.

Click to download the detailed PDF file

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

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 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.

Applications：

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

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 RT5400A 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	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

RT5400A Pin Description:

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.

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	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.

Operating temp profile

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
	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 .

Power Classification

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.

RT5400A Typical Connection Diagram :
- Output Adjustment

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.

RT5400A Package Size 6+4PIN ： (mm±3mm )

RT5400A

Related products