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Texas Instruments TPS23730 | Demoboard PMP22477
Class 6 PoE PD flyback converter (12 V, 3.8 A) with input-power limiting and PSR reference design
Overview
| Topology | Flyback Converter |
| Input voltage | 42.5-57 V |
| Output 1 | 12 V / 3.8 A |
Description
This reference design implements a Power over Ethernet (PoE) Power Device (PD) flyback converter with 12-V and 3.8-A output. TPS23730 PD and PWM controller provide all necessary functions to implement the PoE PD and PWM control for the flyback converter. TPS23730 uses primary side regulation (PSR), eliminating the need for optocoupler feedback. An input power-limiting circuit enables the output to be paralleled with a second converter for increased output-power capability.
Features
- Combined PD and PWM controller
- Primary side regulation (no optocoupler)
- Input-power limiting
- Converters can be paralleled for increased power
Typical applications
- Occupancy detection (people tracking, people counting), WLAN/Wi-Fi access point, Vision sensors, Barcode reader
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | C | Tol. C | Size | Q | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Winding Style | Number of windings | L1 (µH) | IR (mA) | RDC max. (Ω) | VR (V (DC)) | Z (Ω) | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT (V (AC)) | Mount | L (µH) | LSmin. (nH) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012006057 | SPEC | 8 files | WCAP-CSGP MLCCs 50 V(DC) | 100 pF | ±5% | 0603 | 1000 | – | 10 GΩ | NP0 Class I | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | 50 | – | – | – | – | – | -55 °C up to +125 °C | – | – | – | – | ||
| 885012206083 | SPEC | 8 files | WCAP-CSGP MLCCs 50 V(DC) | 1 nF | ±10% | 0603 | – | 2.5 | 10 GΩ | X7R Class II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | 50 | – | – | – | – | – | -55 °C up to +125 °C | – | – | – | – | ||
 | 742792641 | SPEC | 9 files | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | 0603 | – | – | – | – | 1.6 | 0.8 | 0.8 | 0.3 | – | 300 | 450 | 250 MHz | 2000 | 0.15 | High Current | – | 1 | – | 2000 | 0.15 | – | – | – | – | – | – | -55 °C up to +125 °C | – | SMT | – | – | ||
 | 744272251 | SPEC | 8 files | WE-SL5 SMT Common Mode Line Filter | – | – | – | – | – | – | – | 10 | 8.7 | 6.5 | – | – | – | 970 | – | – | 0.035 | – | sectional | 2 | 250 | 2000 | 0.035 | 80 | – | – | – | – | – | – | 1000 | SMT | 250 | 1500 | ||
 | 744273501 | SPEC | 8 files | WE-SL5 HC SMT Common Mode Line Filter | – | – | – | – | – | – | – | 9.5 | 8.3 | 5 | – | – | – | – | – | – | 0.0055 | – | sectional | 2 | 5 | 5000 | 0.0055 | 80 | 500 | – | – | – | – | -40 °C up to +125 °C | 500 | SMT | 5 | 570 | ||
 | 742792115 | SPEC | 7 files | – | – | – | 1206 | – | – | – | – | 3.2 | 1.6 | 1.1 | 0.5 | – | 80 | 120 | 500 MHz | – | – | High Current | – | 1 | – | 4000000 | 0.025 | – | – | – | – | – | – | -55 °C up to +125 °C | – | SMT | – | – | ||
 | 7490220122 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | WE-LAN LAN Transformer | – | – | – | – | – | – | – | 18.04 | 14.7 | 9.05 | 13.97 | – | – | – | – | – | – | 4PPoE (to 900 mA) | – | – | 350 | – | – | – | – | 1000BASE-T | 1 | 4PPoE (up to 1000 mA) | No | -40 °C up to +105 °C | 1500 | SMT | 350 | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012006057 | SPEC | |
| 885012206083 | SPEC | |
| 742792641 | SPEC | |
| 744272251 | SPEC | |
| 744273501 | SPEC | |
| 742792115 | SPEC | |
| 7490220122 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | C | Tol. C | Size | Q | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Winding Style | Number of windings | L1 (µH) | IR (mA) | RDC max. (Ω) | VR (V (DC)) | Z (Ω) | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT (V (AC)) | Mount | L (µH) | LSmin. (nH) | Samples |
|---|