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Details
| Topologie | Abwärts- und Aufwärtswandler |
| Eingangsspannung | 9-55 V |
| Ausgang 1 | 12 V / 6 A |
Beschreibung
Demonstration circuit 2931A is a buck-boost regulatorfeaturing the LTC®7878. The DC2931A operates from a 9V to 55V input voltage range and generates a 12V, 6A output. The LTC7878 has a precision voltage reference that can generate an output voltage with 1% tolerance over the full operating conditions. The 260kHz switching frequency operation results in a small and efficient circuit. The converter achieves over 97% efficiency with 6A load.The demonstration circuit can be easily modified to regulate output voltages from 1V to 70V.The DC2931A provides a high-performance, cost-effective solution for generating a 12V output. The LTC7878 data sheet gives a complete description of this part, its operation, and application information. Refer to it in conjunction with this demo manual.
Eigenschaften
- Single Inductor Architecture Allows VIN Above, Below or Equal to the Regulated VOUT
- Synchronous Rectification: Up to 98% Efficiency
- Wide VIN Voltage Range: 5V to 70V
- ±1% Output Voltage Accuracy: 1V ≤ VOUT ≤ 70V n DCR or RSENSE Current Sensing
- Peak Current Mode Control in Buck/Boost/BuckBoost Mode
- Programmable Input or Output Current Regulation n 7V NMOS Gate Drivers
- Phase-Lockable Frequency (100kHz to 600kHz)
- Multiphase/Multi-ICs Parallel Operation
- Selectable Continuous or Pulse-Skipping Mode Operation and Inductor Peak Current Limits
- Small 32-Lead 5mm × 5mm QFN Package
Typische Anwendungen
- Industrial and Telecom Systems
- Distributed DC Power or Battery Systems
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | C | Tol. C | VR(V (DC)) | Bauform | DF(%) | RISO | Keramiktyp | B(mm) | Fl(mm) | Verpackung | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | fres(MHz) | Drahttype | Pins | Typ | Montageart | L(mm) | H(mm) | IR(A) | Arbeitsspannung(V (AC)) | Betriebstemperatur | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 16 V(DC), 100 nF, ±10% | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 16 V(DC) | Kapazität100 nF | Kapazität±10% | Nennspannung16 V (DC) | Bauform0603 | Verlustfaktor3.5 % | Isolationswiderstand5 GΩ | KeramiktypX7R Klasse II | Breite0.8 mm | Pad Dimension0.4 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | Länge1.6 mm | Höhe0.8 mm | – | – | Betriebstemperatur -55 °C up to +125 °C | |||||
 | WE-HCF SMT-Hochstrominduktivität, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-HCF SMT-Hochstrominduktivität | – | – | – | Bauform2013 | – | – | – | Breite20.5 mm | – | – | Induktivität4.2 µH | Performance Nennstrom27 A | Sättigungsstrom 134 A | Sättigungsstrom @ 30%38 A | Gleichstromwiderstand3.34 mΩ | Eigenresonanzfrequenz24 MHz | DrahttypeFlach | Pins2 | – | MontageartSMT | Länge20.8 mm | Höhe13.5 mm | Nennstrom24 A | – | Betriebstemperatur -40 °C up to +125 °C | ||||
 | WR-PHD Kurzschlussbrücken, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Kurzschlussbrücken | – | – | – | – | – | Isolationswiderstand1000 MΩ | – | – | – | VerpackungBeutel | – | – | – | – | – | – | – | Pins2 | – | – | – | – | Nennstrom3 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -25 °C up to +105 °C | |||
 | WR-PHD Stiftleisten, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten | – | – | – | – | – | Isolationswiderstand1000 MΩ | – | – | – | VerpackungBeutel | – | – | – | – | – | – | – | Pins3 | TypGerade | MontageartTHT | Länge6 mm | – | Nennstrom2 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C |