Overview
The FDMQ8205 is part of the GreenBridge™ 2 series of quad MOSFETs designed by onsemi. This component is specifically tailored for bridge applications, ensuring that the input is insensitive to the polarity of the power source. It replaces traditional diode bridges, which often suffer from high power loss, with low RDS(on) dual P-ch and N-ch MOSFETs. This design significantly reduces power loss caused by voltage drops, making it highly efficient for Power over Ethernet (PoE) Power Device (PD) applications. The FDMQ8205 is compatible with the IEEE802.3at PoE standard, meeting detection and classification requirements while minimizing backfeed voltage.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VDSS (Drain to Source Voltage) | - | - | 80 | V |
| RDS(on) N-ch MOSFET @ VGS = 10 V | 26 | 35 | 51 | mΩ |
| RDS(on) P-ch MOSFET @ VGS = -10 V | 76 | 95 | 147 | mΩ |
| ID Max (Continuous Drain Current) | - | - | 1.7 | A |
| PD Max (Power Dissipation) | - | - | 2.5 | W |
| TJ Max (Junction Temperature) | - | - | 150 | °C |
| VGS (Gate to Source Voltage) | - | - | ±57 | V |
| Package Type | - | - | WDFN-12 | - |
Key Features
- Low Power Loss GreenBridge™ replaces traditional diode bridges.
- Self-driving circuitry for MOSFETs.
- Low RDS(on) 80V rated MOSFETs.
- Maximizes available power and voltage.
- Eliminates thermal design problems.
- IEEE802.3at compatible, meeting detection and classification requirements.
- Works with 2 and 4-pair architecture.
- Small backfeed voltage.
- Compact MLP 4.5x5 package.
- Pb-free and halogen-free.
Applications
- Power over Ethernet (PoE) Power Device (PD) applications.
- IP Phones.
- Network Cameras.
- Wireless Access Points.
- Thin Clients.
- Microcell.
- Femtocell.
Q & A
- What is the FDMQ8205 used for?
The FDMQ8205 is used in bridge applications, particularly in Power over Ethernet (PoE) Power Device (PD) applications, to replace traditional diode bridges and reduce power loss.
- What are the key benefits of using the FDMQ8205?
The key benefits include low power loss, self-driving circuitry for MOSFETs, low RDS(on), and the ability to maximize available power and voltage while eliminating thermal design problems.
- Is the FDMQ8205 compatible with IEEE802.3at PoE standard?
- What is the package type of the FDMQ8205?
The FDMQ8205 comes in a compact WDFN-12 package.
- What are the typical applications of the FDMQ8205?
Typical applications include IP Phones, Network Cameras, Wireless Access Points, Thin Clients, Microcell, and Femtocell.
- What is the maximum junction temperature for the FDMQ8205?
The maximum junction temperature is 150°C.
- Is the FDMQ8205 Pb-free and halogen-free?
- What is the maximum continuous drain current for the FDMQ8205?
The maximum continuous drain current is 1.7 A.
- What is the maximum power dissipation for the FDMQ8205?
The maximum power dissipation is 2.5 W.
- How does the FDMQ8205 handle backfeed voltage?
The FDMQ8205 is designed to have a small backfeed voltage, ensuring efficient operation.
