Hotswap MOSFETThe TPS23753 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 802.3af) requirements.
The TPS23753 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 startup mechanism with an internal, switched current source. This provides the advantages of cycling overload fault protection without the constant power loss of a pull up resistor.
The programmable oscillator may be synchronized to a higher-frequency external timing reference.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | IEEE 802.3 PoE Interface and Isolated Converter Controller datasheet (Rev. C) | 04 Jan 2010 | |
| Technical article | How to reduce the size of your 13-W PoE PD solution | 25 Jun 2019 | ||
| Technical article | Maximizing PoE PD efficiency on a budget | 10 Nov 2015 | ||
| Application note | Lightning Surge Considerations for PoE Powered Devices | 30 Apr 2015 | ||
| Application note | Designing with the TPS23753 Powered Device and Power Supply Controller (Rev. C) | 10 Jan 2013 | ||
| Application note | Implementing a Buck Converter With the TPS23753A | 20 Sep 2010 | ||
| Application note | Advanced Adapter ORing Solutions using the TPS23753 (Rev. A) | 09 Feb 2009 | ||
| Application note | PoE Powered Device for 24 VAC Building Power Applications | 10 Sep 2008 | ||
| Application note | Designing an EMI Compliant PoE with Isolated Flyback | 20 May 2008 | ||
| Application note | Practical Guidelines EMI Compliant PoE | 27 Mar 2008 |
For additional terms or required resources, click any title below to view the detail page where available.
The TPS23753AEVM-001 contains evaluation and reference circuitry for the TPS23753A, which is a Class 3 PoE PD + PWM Controller. It contains input and output power connectors and an array of onboard test points for circuit evaluation. The TPS23753AEVM-002 (3.3-V output) can be configured with simple (...)
TPS23753AEVM-004 contains evaluation and reference circuitry for the TPS23753A, which is a Class 3 PoE PD + PWM Controller. It contains input and output power connectors and an array of onboard test points for circuit evaluation. The TPS23753AEVM-003 (5-V output) and TPS23753AEVM-005 (12-V output) (...)
| Package | Pins | Download |
|---|---|---|
| TSSOP (PW) | 14 | View options |
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