Date: 03/10/2008

New integrated PoE + DC-DC converters from ON Semiconductor

ON Semiconductor announced the availability of the NCP1080 and NCP1081, two new members of its Power over Ethernet (PoE) product family.

These two integrated Power over Ethernet Powered Device (PoE-PD) and DC-DC converter controllers support standard power of 13 W applications and NCP1081 supports extended power ranges up to 40 watts of regulated power delivered to the application load in a 2-pair configuration.

Features are:

1. The devices combine PoE-PD interface and a DC-DC converter controller in a single chip.
2. Both devices support the IEEE 802.3af standard
3. NCP1081 enables the latest IEEE 802.3af draft (D3.0) standard including two-event physical layer classification.
4. Reduces bill-of-materials (BOM) counts by up to 67 percent
5. The high power capabilities of the NCP1081 opens the door to a new class of products powered directly over Ethernet lines, eliminating the need for local power adaptors or power supplies.
6. Provides superior cable ESD and surge protection levels compared to other integrated PD and DC-DC converter controllers.
7. Low on-resistance (Ron) and extended temperature range
8. Both devices support an adjustable under-voltage lock out mechanism, offer an integrated classification loop and allow for external programming of key parameters.
9. NCP1081 supports over-temperature protection and has a two-event physical layer classification indicator.
10. The integrated DC-DC converter controllers facilitate the implementation of single-ended power supply topologies such as fly-back, buck and forward converters and uses a control scheme based on peak current control.

Some of the applications of these chips include VoIP phones, wireless access points, Industrial Ethernet devices, pan-tilt-zoom (PTZ) and dome IP cameras, RFID base stations, WiMax modems and could be considered for PC laptops.


Packaging: TSSOP-EP20
Size: 4.4 mm x 6.5 mm
Pricing: for NCP1080 is $1.45 USD and for the NCP1081 $1.80 USD for quantities of
1K-units and above
Availability: The NCP1080/1 are currently available.
NCP1081 and NCP1080 evaluation boards are also available.

For more information, visit http: http://www.onsemi.com