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Texas Instruments TPS23754 | Demoboard PMP22301
IEEE 802.3at, high efficiency, PoE interface and DC/DC controller
Details
| Topologie | Sonstige Topologie |
| Eingangsspannung | 24-48 V |
| Ausgang 1 | 24 V / 0.9 A |
| IC-Revision | B |
Beschreibung
The TPS23754 and TPS23756 devices have a combined power-over-ethernet (PoE), powered-device (PD) interface, and current-mode DC-DC controller optimized specifically for isolated converters. The PoE interface supports the IEEE 802.3at standard.The TPS23754 and TPS23756 support a number of input voltage ORing options including highest voltage, external adapter preference, and PoE preference. These features allow the designer to determine which power source will carry the load under all conditions.The PoE interface features the new extended hardware classification necessary for compatibility with high-power midspan power sourcing equipment (PSE) per IEEE 802.3at. The detection signature pin can also be used to force power from the PoE source off. Classification can be programmed to any of the defined types with a single resistor.The DC-DC controller features two complementary gate drivers with programmable dead time. This simplifies the design of active-clamp forward converters or optimized gate drive for highly-efficient flyback topologies. The second gate driver may be disabled if desired for single MOSFET topologies. The controller also features internal soft start, bootstrap start-up source, current-mode compensation, and a 78% maximum duty cycle. A programmable and synchronizable oscillator allows design optimization for efficiency and eases use of the controller to upgrade existing power supply designs. Accurate programmable blanking, with a default period, simplifies the usual current-sense filter design trade-offs.The TPS23754 device has a 15-V converter start-up while the TPS23756 device has a 9-V converter start-up. The TPS23754-1 replaces the PPD pin with a no-connect for increased pin spacing.
Eigenschaften
- Powers up to 30-W (Input) PDs
- DC-DC Control Optimized for Isolated Converters
- Supports High-Efficiency Topologies
- Complete PoE Interface
- Enhanced Classification per IEEE 802.3at With Status Flag
- Adapter ORing Support
- Programmable Frequency With Synchronization
- Robust 100-V, 0.5-Ω Hotswap MOSFET
- –40°C to 125°C Junction Temperature Range
- Industry Standard PowerPAD™ HTSSOP-20
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | Pins | PCB/Kabel/Panel | Modularity | Wire Section | C | Tol. C | VR(V (DC)) | DF(%) | RISO | Keramiktyp | L(mm) | B(mm) | H(mm) | Fl(mm) | Verpackung | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | fres(MHz) | VOP(V) | IR(A) | Arbeitsspannung(V (AC)) | Z @ 100 MHz(Ω) | Zmax(Ω) | Testbedingung Zmax | IR 2(mA) | RDC max.(mΩ) | Typ | Version | Vin | VOut1(V) | IOut1(A) | L(µH) | n | VT(V (RMS)) | Bauform | Vaux(V) | RDC 1(Ω) | RDC 2(Ω) | RDC 3(Ω) | Montageart | Datenrate | Ports | PoE | Improved CMRR | Betriebstemperatur | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-MAPI SMT-Speicherdrossel, 2, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-MAPI SMT-Speicherdrossel | Pins2 | – | – | – | – | – | – | – | – | – | Länge2 mm | Breite1.6 mm | Höhe1 mm | – | – | Performance Nennstrom4.35 A | Sättigungsstrom @ 30%7.5 A | Gleichstromwiderstand40 mΩ | Eigenresonanzfrequenz205 MHz | Betriebsspannung80 V | Nennstrom2.5 A | – | – | – | – | – | Gleichstromwiderstand53 mΩ | – | VersionSMT | – | – | – | Induktivität0.33 µH | – | – | Bauform2010 | – | – | – | – | MontageartSMT | – | – | – | – | Betriebstemperatur -40 °C up to +125 °C | ||||
 | WE-MAPI SMT-Speicherdrossel, 2, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-MAPI SMT-Speicherdrossel | Pins2 | – | – | – | – | – | – | – | – | – | Länge4 mm | Breite4 mm | Höhe2 mm | – | – | Performance Nennstrom5.15 A | Sättigungsstrom @ 30%7.1 A | Gleichstromwiderstand39.9 mΩ | Eigenresonanzfrequenz26 MHz | Betriebsspannung80 V | Nennstrom3.6 A | – | – | – | – | – | Gleichstromwiderstand48 mΩ | – | VersionSMT | – | – | – | Induktivität3.3 µH | – | – | Bauform4020 | – | – | – | – | MontageartSMT | – | – | – | – | Betriebstemperatur -40 °C up to +125 °C | ||||
 | WR-TBL Series 2141 - 3.50 mm Horiz. Entry Modular, 2, Käfigzugklemme | Simulation– | Downloads6 Dateien | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | Pins2 | PCB/Kabel/PanelPCB | ModularityJa | Wire Section 24 to 16 (AWG) 0.2 to 1 (mm²) | – | – | – | – | – | – | Länge7.05 mm | – | – | – | VerpackungKarton | – | – | – | – | – | Nennstrom10 A | Arbeitsspannung300 V (AC) | – | – | – | – | – | TypHorizontal | – | – | – | – | – | – | – | – | – | – | – | – | MontageartTHT | – | – | – | – | Betriebstemperatur -40 °C up to +105 °C | |||
 | WR-PHD Stiftleisten - Einreihig, 2, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten - Einreihig | Pins2 | – | – | – | – | – | – | – | Isolationswiderstand1000 MΩ | – | Länge5.08 mm | – | – | – | VerpackungBeutel | – | – | – | – | – | Nennstrom3 A | Arbeitsspannung250 V (AC) | – | – | – | – | – | TypGerade | – | – | – | – | – | – | – | – | – | – | – | – | MontageartTHT | – | – | – | – | Betriebstemperatur -40 °C up to +105 °C | |||
 | WE-LAN LAN Übertrager, 24, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-LAN LAN Übertrager | Pins24 | – | – | – | – | – | – | – | – | – | Länge17.55 mm | Breite16 mm | Höhe7.2 mm | Pad Dimension13.97 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | Typ4PPoE (to 600 mA) | VersionSMT | – | – | – | Induktivität350 µH | Übersetzungsverhältnis1:1 | Prüfspannung1500 V (RMS) | – | – | – | – | – | MontageartSMT | Datenrate10/100/1000BASE-T | Ports1 | PoE4PPoE (bis zu 600 mA) | Verbesserte Common Mode EntstörungNein | Betriebstemperatur -40 °C up to +105 °C | ||||
 | WE-CBF SMT-Ferrit, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-CBF SMT-Ferrit | – | – | – | – | – | – | – | – | – | – | Länge2 mm | Breite1.2 mm | Höhe0.0009 mm | Pad Dimension0.5 mm | – | – | – | – | – | – | Nennstrom1.5 A | – | Impedanz @ 100 MHz600 Ω | Maximale Impedanz700 Ω | Maximale Impedanz150 MHz | Nennstrom 22000 mA | Gleichstromwiderstand150 mΩ | TypHochstrom | VersionSMT | – | – | – | – | – | – | Bauform0805 | – | – | – | – | MontageartSMT | – | – | – | – | Betriebstemperatur -55 °C up to +125 °C | ||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | Kapazität1 µF | Kapazität±10% | Nennspannung50 V (DC) | Verlustfaktor10 % | Isolationswiderstand0.1 GΩ | KeramiktypX7R Klasse II | Länge2 mm | Breite1.25 mm | Höhe1.25 mm | Pad Dimension0.5 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Bauform0805 | – | – | – | – | – | – | – | – | – | Betriebstemperatur -55 °C up to +125 °C | |||||
| WCAP-CSGP MLCCs 100 V(DC), –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 100 V(DC) | – | – | – | – | Kapazität100 nF | Kapazität±10% | Nennspannung100 V (DC) | Verlustfaktor2.5 % | Isolationswiderstand1 GΩ | KeramiktypX7R Klasse II | Länge2 mm | Breite1.25 mm | Höhe1.25 mm | Pad Dimension0.5 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Bauform0805 | – | – | – | – | – | – | – | – | – | Betriebstemperatur -55 °C up to +125 °C | |||||
| WCAP-CSGP MLCCs 100 V(DC), –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 100 V(DC) | – | – | – | – | Kapazität10 nF | Kapazität±10% | Nennspannung100 V (DC) | Verlustfaktor2.5 % | Isolationswiderstand10 GΩ | KeramiktypX7R Klasse II | Länge1.6 mm | Breite0.8 mm | Höhe0.8 mm | Pad Dimension0.4 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Bauform0603 | – | – | – | – | – | – | – | – | – | Betriebstemperatur -55 °C up to +125 °C | |||||
 | WE-PoE+ Übertrager für Power over Ethernet plus, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-PoE+ Übertrager für Power over Ethernet plus | – | – | – | – | – | – | – | – | – | – | Länge21.8 mm | Breite29.65 mm | Höhe11.43 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | VersionCCM Flyback | Input Voltage 17 - 57 V (DC) | Ausgangsspannung 124 V | Ausgangsstrom 11 A | Induktivität80 µH | Übersetzungsverhältnis1:1:0.46 | Prüfspannung1500 V (RMS) | BauformEFD20 | Hilfsspannung10.6 V | Gleichstromwiderstand 10.125 Ω | Gleichstromwiderstand 20.1 Ω | Gleichstromwiderstand 30.165 Ω | MontageartSMT | – | – | – | – | Betriebstemperatur -40 °C up to +125 °C |