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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 | Status | 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 | Active i| Production is active. Expected lifetime: >10 years. | 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 | Active i| Production is active. Expected lifetime: >10 years. | 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 | Active i| Production is active. Expected lifetime: >10 years. | 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 | Active i| Production is active. Expected lifetime: >10 years. | 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 | Active i| Production is active. Expected lifetime: >10 years. | 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 | ||
 | 7490220122 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LAN LAN Transformer | – | – | – | – | – | – | – | 17.55 | 16 | 98.8 | 13.97 | – | – | – | – | – | – | 4PPoE (to 900 mA) | – | – | 350 | – | – | – | – | 10/100/1000BASE-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 | |
| 7490220122 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | 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 |
|---|