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Monolithic Power Systems EV8004-QW-00A
13W 802.3af PoE Powered Device Interface with Flyback DC-DC Converter EV Board
Overview
| Topology | Flyback Converter |
| Input voltage | 36-57 V |
| Output 1 | 12 V / 1 A |
| IC revision | 1.1 |
Description
The MP8004 is an integrated IEEE 802.3af PoE compliant Powered Device (PD) power supply solution. It includes a PD interface and an isolated/non-isolated flyback converter. The PD interface includes detection andclassification modes as well as a 100V output pass device. Inrush current limit is included to slowly charge the input capacitor.The DC-DC converter includes a 150V power switch and is capable of delivering 13W output power with high efficiency. It has an internalsoft-start, auto-retry, over current, short circuit, and over voltage protection. It can also skip cycles during light load condition.The MP8004 is available in thermally enhanced 4x6mm QFN20 package.
Features
- Meets IEEE 802.3af Specifications
- 100V, 1Ω Integrated Pass Switch
- 420mA DC Input Current Limit
- 150V, 0.45Ω Integrated Switch for PowerConverter
- Cycle-by-Cycle Switching Current Limit
- Integrated 100V Startup Circuit
- Programmable Switching Frequency
- Duty Cycle Limiting with Line Feed Forward
- Internal Slope Compensation
- OCP, SCP and OTP Protection
- 4x6mm QFN20 Package
Typical applications
- VoIP Telephones
- Safety Backup Power
- Security Camera Systems
- Remote Internet Power
- Wireless Access Points/Wireless LAN;Small-cell Base Stations