1.Product characteristics

• Compliant with IEEE802.3af standard
• 40V~57V wide operating voltage range.
• Maximum output power up to 13W；Rated output：12V/1.1A.
• The output ripple is less than 200 mV（Applied capacitance）.
• Conversion efficiency can be as high as 88% (input: 48V output)12V@1.1A).
• With over current short circuit under voltage surge and other excellent reliability and circuit protection. 
• PCBA standard size: 28mm*18mm*11mm
• Input/Output: isolate 1500Vdc.
• High reliability: The design meets the 5 million hour average failure interval.

2. Scope of application

• Video and VoIP Phone
• RFID Reader
• Multiband Access Point
• Surveillance Camera

3. Pin definition 

Pin	Name	Describe
1,2	Vin-	RX Input (-). This input pin is used in conjunction with VA2 and connects tothe centre tap of the transformer connected to pins 1 & 2 & 4/5 of the RJ45 connector (TX) - it is not polarity sensitive.
3,4	Vin+	RX Input (+). This input pin is used in conjunction with VA1 and connects tothe centre tap of the transformer connected to pins 3 & 6 & 7/8 of the RJ45 connector (RX) - it is not polarity sensitive.
5,6	VOUT+	Is the negative output of the PD.
7,8	VOUT-	Is the positive output of the PD.

4. Electrical characteristics

4.1 Absolute maximum rating parameter

No	Parameter	Symbol	MIN	MAX	Units
1	DC Voltage	VCC	40	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.

4.2 Recommended working conditions

No	Parameter	Symbol	MIN	TYP	MAX	Units
1	Input Voltage	VIN	38	48	57	V
2	Low Voltage Lock	VLOCK	-	-	36	V
3	Working temperature	TOP	-40	25	80	℃

*Applicable only to WC-PD13S120B maximum operating temperature.

4.3 DC characteristic

No	Parameter	Symbol	MIN	TYP	MAX	Units	Test Opinions
1	Standard Output Voltage	VDC	11.8	12	12.3	V	VIN=48v
2	Output Current (VIN=48V)	PWR	-	1.1	-	A	Wide voltage input 40-57V
3	Power adjustment rate	VLINE	-	0.1	-	%	@50% Load
4	Load Adjustment Rate	VLOAD	-	1	-	%	@VIN=48V
5	Ripple Output Noise	VRN	-	200	250	mVp-p	@Maximum Load
6	Minimum Load	RLOAD	10	-	-	mA
7	Short circuit duration	TSC	-	-	∞	sec
8	Efficiency (load 80%)	EFF	85	88	-	%
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.

5 Power Classification

WC-PD13S120B uses IEEE802.3af standard and runs with Class 3 (13W) power rating by default.

Define criteria	Cable requirements	Grading parameters	Power Supply Characteristics
IEEE802.3at  (PoE Plus)	CAT5 cable or  CAT6 cable	Maximum power required for Class4 devices is 13W~25.5W	The DC voltage ranges from 42 to 57V,with a typical value of 48V. Typical operating current is 10~600mA;typical output power: 30W; Class4 rating supported by electrical equipment
IEEE802.3af （PoE）	CAT5 cable	Maximum power required for Class0 devices is 0~12.95W	The DC voltage ranges from 40 to 57V, with a typical value of 48V. Typical operating current is 10~350mA;typical output power: 15.4W; The overload detection current is 350~500mA. Provide 4 Class Power Requests for PD Devices ranging from 3.84 to 12.95W
		The maximum power required for Class1 devices is 0~3.84W
		The maximum power required for Class2 devices is 3.85W~6.49W
		The maximum power required for Class3 devices is 6.5W~12.95W