AM-PD1211 is one Power over Ethernet power module supporting a wide operating voltage of 38V to 57V, a rated output voltage of 12v and 1.2A rated current. It supplies maximum output power of 13W. It conforms to the IEEE802.3 af standard protocol and is classified as Class 3. It has superior reliability such as over-current / under-voltage / short circuit protection, and anti-surge protection. It can be used in security video surveillance, LoRa gateway equipment, data acquisition terminals, and any IoT terminals.

Main Features

Compliant with IEEE802.3af standard.
38V~57V wide operating voltage range.
Maximum output power up to 13W; Rated output 12V/1.1A.
The output ripple is less than 150 mV.
High conversion efficiency up as 87% (input: 48V, output 12V 1.1A).
Reliable overcurrent / undervoltage / short circuit protection and anti-surge protection.
PCBA standard size 38*38*14mm
Input/Output: isolate 1500Vdc.

1. Pin definition

Pin	Name	Describe
21,22 10,18	Vout+	The positive output of the PD
19,20 9,17	Vout-	The negative output of the PD
7,15	LED+	7,15pin to pin.
8,16	LED-	8,16pin to pin.
1	4/5	Poe power supply input, connected to RJ45 pin4 / 5.
2	7/8	Poe power supply input, connected to RJ45 pin7 / 8.
3,11	TX+	Network signal 1, connected to RJ45 Pin1 (TX +).
4,12	TX-	Network signal 2, connected to RJ45 Pin2 (TX -).
5,13	RX+	Network signal 3, connected to RJ45 Pin3 (RX +).
6,14	RX-	Network signal 6, connected to RJ45 Pin6 (RX -).

2. Electrical characteristics

2.1 Absolute maximum rating parameter

No	Parameter	Symbol	MIN	MAX	Units
1	DC Voltage	VCC	38	57	V
2	DC Voltage Surge 1ms	VSURGE	-0.6	80	V
3	Ambient temperature	TS	-40	80	℃

*Exceeding the above rating may cause permanent damage to the product.Functional operations under these conditions are not recommended.

2.2 Recommended working conditions

No	Parameter	Symbol	MIN	TYP	MAX	Units
1	Input voltage	VIN	38	48	57	V
2	Low Voltage Lock	VLOCK	–	–	37	V
3	Working temperature	TOP	-40	25	80	℃

*Applicable only to AM-PD1211 maximum operating temperature.

2.3 output characteristic

No	Parameter	Symbol	MIN	TYP	MAX	Units	Test Opinions
1	Standard Output Voltage	VDC	11.5	12.0	12.2	V	VIN=48v
2	Output Current (VIN=48V)	PWR	–	1.1	1.2	A	Wide voltage input 38-57V
3	Power adjustment rate	VLINE	–	0.1	–	%	@50% Load
4	Load Adjustment Rate	VLOAD	–	1	–	%	@VIN=48V
5	Ripple Output Noise	VRN	–	100	200	mVp-p	@Maximum Load
6	Minimum Load	RLOAD	10	–	–	mA
7	Short circuit duration	TSC	–	–	∞	sec
8	Efficiency (load 80%)	EFF	82	87	–	%
9	Isolation Voltage (I/O)	VISO	–	–	1500	VPK
10	Temperature coefficient	TC	–	0.02		%	Per ℃
11	Dynamic response	TS	–	60	100	ms	VIn=48V Vout=max

1: Typical number is 25 C, nominal voltage is 48V, for auxiliary design only.

2: Output ripple and noise can be reduced by an external filter, see the application instructions.

3: If operated under the specified minimum load, the module emits audible noise and may cause PSE malfunction.

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