Overview
The TPS23753A, produced by Texas Instruments, is a combined Power over Ethernet (PoE) powered device (PD) interface and current-mode DC-DC controller. This component is optimized specifically for isolated converter designs and supports the IEEE 802.3at standard as a 13-W, type 1 PD. It integrates a complete PoE interface with enhanced ESD ride-through capability, making it suitable for various PoE applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Package | 14-Pin TSSOP |
| Junction Temperature Range | –40°C to 125°C |
| ESD Capability | 15-kV and 8-kV system level |
| Hotswap MOSFET | Robust 100-V, 0.7-Ω |
| Input Voltage ORing Options | Highest voltage, external adapter preference, and PoE preference |
| Programmable Frequency | Synchronization with higher-frequency external timing reference |
| Bootstrap Start-up Mechanism | Internal, switched current source |
| Classification | Programmable to any defined type with a single resistor |
Key Features
- Enhanced ESD ride-through capability
- Optimized for isolated converters
- Complete PoE interface supporting IEEE 802.3at standard
- Adapter ORing support and 12-V adapter support
- Programmable frequency with synchronization to external timing reference
- Robust 100-V, 0.7-Ω hotswap MOSFET
- Small 14-Pin TSSOP package
- Bootstrap start-up mechanism with internal, switched current source
Applications
The TPS23753A is suitable for a variety of Power over Ethernet (PoE) applications, including IP phones, wireless access points, security cameras, and other networked devices that require isolated converter designs. It is also used in reference designs for industrial gateways, audio communication systems, and high-efficiency power modules for IP cameras.
Q & A
- What is the primary function of the TPS23753A?
The TPS23753A is a combined Power over Ethernet (PoE) powered device (PD) interface and current-mode DC-DC controller. - What standard does the TPS23753A support?
The TPS23753A supports the IEEE 802.3at standard as a 13-W, type 1 PD. - What is the junction temperature range of the TPS23753A?
The junction temperature range is –40°C to 125°C. - What are the ESD capabilities of the TPS23753A?
The TPS23753A has 15-kV and 8-kV system level ESD capability. - What type of MOSFET does the TPS23753A feature?
The TPS23753A features a robust 100-V, 0.7-Ω hotswap MOSFET. - Can the oscillator frequency be programmed?
Yes, the oscillator frequency can be synchronized to a higher-frequency external timing reference. - How is the bootstrap start-up mechanism implemented?
The bootstrap start-up mechanism uses an internal, switched current source. - What are the input voltage ORing options supported by the TPS23753A?
The TPS23753A supports highest voltage, external adapter preference, and PoE preference. - Can the classification be programmed?
Yes, the classification can be programmed to any defined type with a single resistor. - What is the package type of the TPS23753A?
The TPS23753A comes in a 14-Pin TSSOP package.
