Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Function | IEEE 802.3af PoE powered-device solution with active-clamp flyback control |
| Regulation options | Primary-side or secondary-side regulation |
| Integration | PD interface, DC/DC controller and hot-swap MOSFET |
| Switching frequency | Up to 650 kHz |
| Feedback feature | Primary-side feedback can operate without an auxiliary winding |
| EMI feature | Frequency jittering |
| Package | QFN-19, 3 mm × 4 mm |
| Orderable part | MP8017GL-Z |
Product Overview
The MP8017GL-Z is an IEEE 802.3af-compatible PoE powered-device solution from MPS in a compact 19-pin QFN package. It integrates the PoE PD interface, the DC/DC control function and the hot-swap power MOSFET, reducing the external circuitry required for an isolated powered-device supply.
Its active-clamp flyback architecture supports primary-side or secondary-side regulation. In primary-side-regulated designs, MPS describes a feedback method that samples the output without an auxiliary transformer winding, while switching operation can extend to 650 kHz to support smaller magnetic components.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| PoE standard | IEEE 802.3af |
| PD channels | 1 |
| Converter topology | Active-clamp flyback |
| Regulation | Primary-side or secondary-side |
| Integrated functions | PD interface, DC/DC controller, hot-swap MOSFET |
| Switching frequency | Up to 650 kHz |
| EMI support | Frequency jittering |
| Reference application power | MPS discusses a 12 W design using a compact EP7 transformer |
| Operating temperature | -40°C to +125°C junction range reported for the orderable device |
| Package | QFN-19, 3 mm × 4 mm |
Design Considerations
The high switching-frequency capability is primarily a size and magnetics optimization tool, not a requirement to operate every design at 650 kHz. Transformer loss, MOSFET switching loss, EMI and control-loop behavior should be checked at the chosen operating point.
Primary-side regulation can reduce optocoupler and auxiliary-winding requirements, but transformer design and sampling conditions remain part of regulation accuracy. Use the MP8017 reference design equations and transformer guidance rather than treating the converter as a drop-in generic PoE controller.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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