IEEE 802.3-2005 PoE interface and Isolated Converter controller with Enhanced ESD Ride-Through
Product details
Parameters
Package | Pins | Size
Features
- Enhanced ESD Ride-Through Capability
- Optimized for Isolated Converters
- Complete PoE Interface
- Adapter ORing Support
- 12-V Adapter Support
- Programmable Frequency With Synchronization
- Robust 100-V, 0.7-Ω Hotswap MOSFET
- Small 14-Pin TSSOP Package
- 15-kV and 8-kV System Level ESD Capable
- –40°C to 125°C Junction Temperature Range
- Design Procedure Application Note – SLVA305
- Adapter ORing Application Note – SLVA306
Description
The TPS23753A is a combined Power over Ethernet (PoE) powered device (PD) interface and current-mode DC-DC controller optimized specifically for isolated converter designs. The PoE implementation supports the IEEE 802.3at standard as a 13-W, type 1 PD. The requirements for an IEEE 802.3at type 1 device are a superset of IEEE 802.3-2008 (originally IEEE 802.3af).
The TPS23753A supports a number of input-voltage ORing options including highest voltage, external adapter preference, and PoE preference.
The PoE interface features an external detection signature pin that can also be used to disable the internal hotswap MOSFET. This allows the PoE function to be turned off. Classification can be programmed to any of the defined types with a single resistor.
The DC-DC controller features a bootstrap start-up mechanism with an internal, switched current source. This provides the advantages of cycling overload fault protection without the constant power loss of a pullup resistor.
The programmable oscillator may be synchronized to a higher-frequency external timing reference. The TPS23753A features improvements for uninterrupted device operation through an ESD event.
Similar but not functionally equivalent to the compared device:
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPS23753AEVM-001 allows reference circuitry evaluation of the TPS23753A. It contains input and output power connectors and an array of onboard test points for circuit evaluation. TPS23753AEVM-002 (3.3-V output) can be configured with simple bill of materials (BOM) changes.
Features
- Ethernet Alliance certified for receiving Class 3 power (optimized for 7W)
- Low-cost, basic design
- Simple gate drive, Shottky diode rectified secondary
- 7-W output power from power over ethernet (PoE), 48-V or 24-V adapter and 4-W output power from a 12-V adapter
- 3.3-V output voltage with simple BOM (...)
Description
TPS23753AEVM-004 allows users to evaluate the reference circuitry of the TPS23753A. It contains input and output power connectors and an array of onboard test points for circuit evaluation. TPS23753AEVM-003 (5-V output) and TPS23753AEVM-005 (12-V output) can be configured with simple bill of (...)
Features
- Efficient, general market design
- Simple gate drive, synchronous rectified secondary
- 10-W output power from power over Ethernet (PoE), 48-V or 24-V adapter and 6-W output power from a 12-V adapter
- 5-V or 12-V output voltage with simple BOM changes
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| TSSOP (PW) | 14 | View options |
Ordering & quality
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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