TPS23731RMTR
ActiveIEEE 802.3BT TYPE 3 CLASS 1-4 POE PD WITH NO-OPTO FLYBACK DC-DC CONTROLLER
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TPS23731RMTR
ActiveIEEE 802.3BT TYPE 3 CLASS 1-4 POE PD WITH NO-OPTO FLYBACK DC-DC CONTROLLER
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS23731RMTR |
|---|---|
| Auxiliary Sense | True |
| Current - Supply | 2 mA |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Channels [custom] | 4 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Package / Case | 45-VFQFN Exposed Pad |
| Power - Max [Max] | 30 W |
| Standards | 802.3bt, 802.3at (PoE+) |
| Supplier Device Package | 45-VQFN (7x5) |
| Type | DC/DC, Controller (PD) |
| Voltage - Supply [Max] | 60 VDC |
| Voltage - Supply [Min] | 0 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | N/A | 5665 | $ 3.24 | |
| Texas Instruments | LARGE T&R | 1 | $ 2.04 | |
| 100 | $ 1.79 | |||
| 250 | $ 1.25 | |||
| 1000 | $ 1.01 | |||
Description
General part information
TPS23731 Series
The TPS23731 device combines a Power over Ethernet (PoE) powered device (PD) interface, and a current-mode DC-DC controller optimized for flyback switching regulator designs where the use of primary-side regulation (PSR) is supported. The PoE interface supports the IEEE 802.3bt and IEEE 802.3at standard s for applications needing up to 25.5 W or less at PD input.
Programmable spread spectrum frequency dithering (SSFD) is provided to minimize the size and cost of EMI filter. Advanced Startup with adjustable soft-start helps to use minimal bias capacitor while simplifying converter startup and hiccup design, also ensuring that IEEE 802.3bt /at startup requirements are met.
The soft-stop feature minimizes stress on switching sync FET(s), allowing FET BOM cost reduction.
Documents
Technical documentation and resources
