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Texas Instruments UCC2897A | Demoboard PMP21318
Class 8 PoE 12-V, 6-A, powered device (PD) active-clamp forward converter reference design
Overview
| Topology | Forward Converter |
| Input voltage | 18-110 V |
| Output 1 | 12 V / 6 A |
| IC revision | C |
Description
This reference design features a Type-4, Class 8, 71-W active clamp forward converter for powered devices (PD) through Power over Ethernet (PoE). The TPS2373-4 PD controller provides detection and classification and also powers up the UCC2897A pulse-width modulation (PWM) controller through its advanced start-up feature.
Features
- Supports power levels for IEEE802.3bt Type-4
- Automatic maintain power signature (MPS)
- Advanced start-up
- Synchronous rectifiers for high efficiency
Typical applications
- High-efficiency DC-to-DC power supplies
- Server power, 48-V telecom, datacom, and 42-V automotive applications
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | fres (MHz) | VT (V (DC)) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | Material | Version | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | n | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 150060YS75000 | SPEC | 25 files RAY files
| WL-SMCW SMT Mono-color Chip LED Waterclear | 590 | Yellow | 595 | 120 | 2 | AlInGaP | 140 | – | – | – | 0603 | -40 °C up to +85 °C | – | – | – | 1.6 | 0.8 | 0.7 | – | Tape and Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | SMT | ||
 | 744314490 | SPEC | 8 files | WE-HCI SMT Flat Wire High Current Inductor | – | – | – | – | – | – | – | – | – | – | 7050 | -40 °C up to +150 °C | – | – | – | 7 | 6.9 | 4.8 | – | – | 4.9 | – | – | 14.5 | 56 | – | 8.3 | 2.2 | 6.5 | Superflux | SMT | – | – | – | – | – | SMT | ||
| 74435581200 | SPEC | 8 files | WE-HCI SMT Flat Wire High Current Inductor | – | – | – | – | – | – | – | – | – | – | 2212 | -40 °C up to +125 °C | – | – | – | 22.5 | 22 | 12 | – | – | 12 | – | – | 4.3 | 13 | – | 20.1 | 5 | 25 | MnZn | SMT | – | – | – | – | – | SMT | ||
 | 885012206052 | SPEC | 8 files | WCAP-CSGP MLCCs 16 V(DC) | – | – | – | – | – | – | – | 1 µF | ±10% | 16 | 0603 | -55 °C up to +125 °C | 10 | 0.1 GΩ | X7R Class II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012206071 | SPEC | 8 files | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | 100 nF | ±10% | 25 | 0603 | -55 °C up to +125 °C | 3.5 | 5 GΩ | X7R Class II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012206083 | SPEC | 8 files | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | 1 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 2.5 | 10 GΩ | X7R Class II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | 74404054102 | SPEC | 8 files | WE-LQS SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | 5040 | -40 °C up to +125 °C | – | – | – | 5 | 5 | 4 | – | – | 1000 | 0.2 | 0.24 | 6000 | 1.9 | – | – | – | – | – | – | – | – | – | – | – | SMT | ||
 | 750341794 | SPEC | – | 4 files | WE-PoE++ Power over Ethernet Plus Plus Transformer | – | – | – | – | – | – | – | – | – | – | ER19/4.8/15 | -40 °C up to +125 °C | – | – | – | 21.08 | 23.37 | 10.5 | – | – | 153 | – | – | – | – | 2250 | – | – | – | – | Forward | 37 - 57 V (DC) | 12 | 6 | 12 | 4:4:2:2:4 | SMT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 150060YS75000 | SPEC | |
| 744314490 | SPEC | |
| 74435581200 | SPEC | |
| 885012206052 | SPEC | |
| 885012206071 | SPEC | |
| 885012206083 | SPEC | |
| 74404054102 | SPEC | |
| 750341794 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | fres (MHz) | VT (V (DC)) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | Material | Version | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | n | Mount | Samples |
|---|