Overview
The TPS23785BPWPR is a high-power, high-efficiency Power over Ethernet (PoE) powered device (PD) interface and DC-to-DC controller produced by Texas Instruments. This integrated circuit is designed to support the IEEE 802.3at standard, making it suitable for high-power applications. It combines the functions of a PoE PD interface and a DC-to-DC controller optimized for non-isolated converters, ensuring efficient power management and high reliability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 0 | - | 57 | V |
| Output Power | - | - | 30 | W |
| Junction Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | TSSOP-24 PowerPAD™ | - |
| ESD Rating (HBM) | - | - | 2 kV | - |
| ESD Rating (CDM) | - | - | 500 V | - |
| ESD Rating (MM) | - | - | 50 V | - |
| Detection Current (DEN) | 62 | 64.3 | 66.5 | μA |
| Thermal Shutdown Temperature | 135 | 145 | 155 | °C |
Key Features
- Supports IEEE 802.3at standard for high-power PoE applications
- Combined PoE PD interface and DC-to-DC controller for non-isolated converters
- Enhanced classification per IEEE 802.3at with adapter preference and PoE preference
- Robust 100-V, 0.5-Ω hotswap MOSFET
- Internal slope compensation, peak current limiter, and off-time pull-down
- Programmable classification current and switching frequency
- Adapter ORing support and internal hotswap switch control
- High-efficiency topologies supported
Applications
- IEEE 802.3at compliant devices
- Video and VoIP telephones
- RFID readers
- Surveillance cameras
- Wireless access points
Q & A
- What is the TPS23785BPWPR used for?
The TPS23785BPWPR is used as a combined Power over Ethernet (PoE) powered device (PD) interface and DC-to-DC controller, particularly for high-power applications. - What standard does the TPS23785BPWPR support?
The TPS23785BPWPR supports the IEEE 802.3at standard. - What is the maximum output power of the TPS23785BPWPR?
The maximum output power is up to 30 watts. - What is the operating junction temperature range of the TPS23785BPWPR?
The operating junction temperature range is from -40°C to 125°C. - What type of package does the TPS23785BPWPR come in?
The TPS23785BPWPR comes in a TSSOP-24 PowerPAD™ package. - How does the TPS23785BPWPR handle ESD protection?
The TPS23785BPWPR has ESD ratings of 2 kV (HBM), 500 V (CDM), and 50 V (MM). - What are some key features of the TPS23785BPWPR?
Key features include enhanced classification, robust hotswap MOSFET, internal slope compensation, and programmable classification current and switching frequency. - What applications is the TPS23785BPWPR suitable for?
The TPS23785BPWPR is suitable for IEEE 802.3at compliant devices, video and VoIP telephones, RFID readers, surveillance cameras, and wireless access points. - How does the TPS23785BPWPR manage power from different sources?
The TPS23785BPWPR supports adapter ORing and has features to determine which power source will carry the load, including highest voltage, external adapter preference, and PoE preference. - What is the purpose of the DEN pin in the TPS23785BPWPR?
The DEN pin is used for PoE detection and inhibiting operation from PoE power by connecting a resistor to VDD to provide the PoE detection signature.
