The module AM-PD0508 is designed to extract power from conventional Class 5 to Class 6 Ethernet cable twisted pairs and meets the IEEE 802.3 af at bt Power-Ethernet (PoE) standard.At the same time, the module allows the power supply category to select “Intermediate Overlap” and “End Overlap” power supply without distinguishing polarity.

Based on the IEEE802.3 bt standard, this paper establishes information connection about the connection status, device type, power consumption level of the receiving device PD, and then applies power supply to port compatible devices based on PSE to power the PD through Ethernet.
This module DC/DC converter works in a wide input voltage range and low ripple low noise output.The DC/DC converter also has built-in output overload, output short circuit and over-temperature protection, and provides a 1500Vdc (input/output) electrical isolation.

Main Features

Compliance with IEEE802.3 at and IEEE802.3 bt standard.
42V~57V wide operating voltage range.
Maximum output power up to 40W; Rated output: 5V/8A.
The output ripple is less than 200 mV.
Conversion efficiency can be as high as 87% (input: 48V output)5V 8A).
With over-current, short circuit, under voltage, surge and other excellent reliability and circuit protection.
PCBA standard size: 40mm*90mm*15mm
Input/Output: isolate 1500Vdc.
High reliability: The design meets the 5 million hour average failure interval.

Dimension

Pin Definition

Pin	Name	describe
1	VA1	This input pin is connected with va2 and the central tap connected to the transformer, to pin 1 and pin 2 of RJ45 connector (Rx).
2	VA2	This input pin, together with va1 and, is connected to the transformer’s central tap, to pins 3 and 6 of the RJ45 connector (TX).
3	VB1	This input pin is used with VB2 and connected to pins 4 and 5 of the RJ45 connector – it is not polarity sensitive.
4	VB2	This input pin is used with VB1 and connected to pins 7 and 8 of the RJ45 connector – it is not polarity sensitive.
5,6,9,10,11	GND	Negative DC output. This pin provides a negative regulation output.
7,8,12,13,14	Vout	DC output of the positive pole. This pin provides a positive regulation output

2. Electrical characteristics

2.1 Absolute maximum rating parameter
No	parameter	Symbol	MIN	MAX	Units
1	DC Voltage	VCC	42	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		42		48		57		V
2	Low Voltage Lock		VLOCK		37		–		–		V
3	working temperature		TOP		-40		25		80		℃
*Applicable only to PS101-5V6A maximum operating temperature. 2.3 DC Characteristic
No	parameter	Symbol		MIN	TYP	MAX		Units		Test Opinions
1	Standard Output Voltage	VDC		4.6	5	5.25		V		VIN=48v
2	Output Current（VIN=48V）	PWR		–	8	–		A		Wide voltage input 42-57V
3	Power adjustment rate	VLINE		–	0.1	–		%		@50% Load
4	Load Adjustment Rate	VLOAD		–	1	–		%		@VIN=48V
5	Ripple Output Noise	VRN		–	150	250		mVp-p		@Maximum Load
6	Minimum Load	RLOAD		10	–	–		mA
7	Short circuit duration	TSC		–	–	∞		sec
8	Efficiency (load 80%)	EFF		85	90	–		%
9	Isolation Voltage (I/O)	VISO		–	–	1500		VPK
10	temperature coefficient	Tc		–	0.02			%		Per ℃
11	efficiency	Tr		–	150	250		ms		VIN=48V VOUT=max

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