Integrated Dual MOSFET Bridge Rectifier for Power over Ethernet
Description
The KTA1170 is a single-chip, highly integrated solution for voltage rectification on Power over Ethernet (PoE) Powered Devices. Applications include Voice over IP (VoIP) Phones, Wireless LAN Access Point, Security Cameras, WiMAX Terminals, Point-of-Sales Terminals, RFID Readers, Thin Clients and Notebook computers.
The KTA1170 is a dual ideal diode bridge designed to rectify independent DC channels into a single output. The KTA1170 can sense the input channels from|IN1-IN2| or |IN3-IN4|seperately and connects them to the output with the correct polarity. KTA1170 can also sense the input channels from|IN1-IN2| and |IN3-IN4| together and connects them to the output with the correct polarity. A very common application is an IEEE 802.3af/at/bt-compliant powered device, which is powered by standards compliant PSE (Power Sourcing Equipment). However, in some applications, where the power is sourced from a non-compliant PSE, refer to Application Note AN167 for additional guidelines on designing with KTA1170.
Features
- Fully supports IEEE® Std. 802.3bt Interface
- Compatible with both IEEE® Std. 802.3af/at
- Supports Input Power Levels Up to 90W
- Integrated Active Bridge Rectifier
- Integrated Solution Optimizing Board Space/Size
- High Efficiency Solution with Synchronous Rectification
- Halogen Free and RoHS Compliant
- Low Forward Voltage Drop Using Power FET
- Small 8-Pin WDFN44-8 Package
- -40°C to 125°C Operating Junction Temperature Range
Applications
- Integrated bridge rectifier and interface for POE Pan, tilt and zoom (PTZ),
- Security and web cameras
- Voice over IP (VoIP) phones
- Wireless LAN access points
- WiMAX terminals
- Point-of-sale (POS) terminals
- RFID terminals
- Thin clients and notebook computers
- Fiber-to-the-home (FTTH) terminals
| Package |
Dimensions |
Package Code |
| WDFN44-8 |
4.00毫米 x 4.00毫米 x 0.75毫米 |
VAE |
Technical Documentation
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