Overview
The NCP1083DER2G is a high-power Power over Ethernet (PoE) Powered Device (PoE-PD) interface and DC-DC converter controller from ON Semiconductor. It is part of the HIPO™ Power over Ethernet Powered Device product family, designed for demanding medium and high power Ethernet applications. This device integrates an enhanced PoE-PD interface supporting both IEEE 802.3af and the IEEE 802.3at standards, along with a flexible and configurable DC-DC converter controller. The NCP1083DER2G enables smooth transitions from non-PoE to PoE-enabled networks and supports power from auxiliary sources such as AC power adapters and battery supplies, eliminating the need for a second switching power supply.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Power Supply Voltage (VPORTP) | -0.3 to 72 | V |
| Internal Regulator Output Voltage (VDDH) | -0.3 to 17 | V |
| Internal Regulator Output Voltage (VDDL) | -0.3 to 3.6 | V |
| Operating Temperature Range | -40°C to 85°C | °C |
| Junction Temperature | Up to 150°C | °C |
| Maximum Power Delivery (IEEE 802.3at) | Up to 25.5 W | W |
| Maximum Power Delivery (Proprietary High Power PoE) | Up to 40 W | W |
| Programmable Operational Current Limit | Up to 1100 mA | mA |
| Oscillator Frequency Range | 100 kHz to 500 kHz | kHz |
| Package Type | TSSOP-20 EP (Pb-Free) |
Key Features
- Supports IEEE 802.3af and IEEE 802.3at standards
- Flexible auxiliary power supply support with 9 V front, rear, and direct auxiliary supply connections
- Programmable classification current and adjustable under-voltage lockout (UVLO)
- Programmable inrush current limit and operational current limit up to 1100 mA
- Over-temperature protection and industrial temperature range (-40°C to 85°C)
- Integrated current mode DC-DC controller supporting isolated and non-isolated fly-back, forward, and buck converter topologies
- Programmable switching frequency, duty cycle up to 80%, slope compensation, and soft start-up
- Robust high voltage process with vertical N-channel DMOS and low loss current sense technique
- Improved robustness against cable ESD (up to 4 kV HBM and 3 kV CDM)
Applications
- Industrial Ethernet devices
- PTZ and Dome IP cameras
- RFID readers
- MIMO WLAN access points
- High-end VoIP phones
- Notebooks and other high-power portable devices
- Point of Sale (POS) systems
- High-power industrial equipment
Q & A
- What is the NCP1083DER2G used for?
The NCP1083DER2G is used as a high-power Power over Ethernet (PoE) Powered Device (PoE-PD) interface and DC-DC converter controller, targeting demanding medium and high power Ethernet applications.
- Which PoE standards does the NCP1083DER2G support?
The NCP1083DER2G supports both IEEE 802.3af and IEEE 802.3at standards.
- What is the maximum power delivery of the NCP1083DER2G under IEEE 802.3at standard?
The NCP1083DER2G can deliver up to 25.5 W under the IEEE 802.3at standard.
- What is the maximum power delivery for proprietary high power PoE applications?
The NCP1083DER2G can deliver up to 40 W for proprietary high power PoE applications.
- What types of DC-DC converter topologies does the NCP1083DER2G support?
The NCP1083DER2G supports isolated and non-isolated fly-back, forward, and buck converter topologies.
- What is the operating temperature range of the NCP1083DER2G?
The operating temperature range is -40°C to 85°C, with full operation up to 150°C junction temperature.
- Does the NCP1083DER2G support auxiliary power supplies?
Yes, it supports auxiliary power supplies with input down to 9 V DC.
- What is the programmable operational current limit of the NCP1083DER2G?
The programmable operational current limit is up to 1100 mA.
- What kind of protection does the NCP1083DER2G offer against ESD events?
The NCP1083DER2G offers improved robustness against cable ESD, withstanding up to 4 kV HBM and 3 kV CDM.
- What package type is the NCP1083DER2G available in?
The NCP1083DER2G is available in a TSSOP-20 EP (Pb-Free) package.
