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Analog Devices LTC7151S | Demoboard DC2615A
LTC7151S High Efficiency 15A Silent Switcher Buck Regulator
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 3.1-20 V |
| Ausgang 1 | 1.2 V / 15 A |
Beschreibung
Demonstration circuit 2615A features the LTC7151S in a high efficiency 1.2V/15A step-down regulator with an input voltage range of 3.1V to 20V and a 1MHz switching frequency. The Silent Switcher®2 technology reduces the switching noise while the internal MOSFETs of the LTC7151S provide high efficiency over a wide input voltage range. No current sense resistor is required.The LTC7151S employs a controlled on-time, valley current mode architecture. This architecture allows for a short minimum on-time which is ideal for high stepdown ratios. In addition, the architecture provides a fast load step response by allowing the switch node pulses to compress after the load steps up – see Figure 6.The LTC7151S data sheet provides a complete description of the IC operation and application information. The data sheet must be read in conjunction with the quick start guide.
Eigenschaften
- Silent Switcher®2 Architecture for Low EMI
- VIN Range: 3.1V to 20V
- VOUT Range: 0.5V to 5.5V
- Differential VOUT Remote Sense
- Adjustable Frequency: 400kHz to 3MHz
- Poly Phase® Operation: Up to 12 Phases
- Output Tracking and Soft-Start
- Reference Accuracy: ±1% Over temperature
- Current Mode Operation for Excellent Line and Load Transient Response
- Accurate 1.2V Run Pin Threshold
- Supports Forced Continuous/Discontinuous Modes
- 28-Lead Thermally Enhanced 4mm × 5mm × 0.74mm LQFN Package
Typische Anwendungen
- Automotive and Industrial Power Supplies, Server Power Applications, Point-of-Load Supply for ASIC, FPGA, DSP, µP, etc.
- Distributed Power Systems
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | f(mm) | L(nH) | LR(nH) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Pins | Typ | Montageart | L(mm) | H(mm) | IR(A) | Arbeitsspannung(V (AC)) | Betriebstemperatur | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCM SMT-Hochstrominduktivität, –, 200 nH | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-HCM SMT-Hochstrominduktivität | – | Induktivität200 nH | Nenninduktivität198 nH | Sättigungsstrom 144 A | Sättigungsstrom @ 30%50.4 A | Gleichstromwiderstand0.37 mΩ | Eigenresonanzfrequenz45 MHz | MaterialMnZn | Pins2 | – | MontageartSMT | Länge10.1 mm | Höhe6.8 mm | Nennstrom25 A | – | Betriebstemperatur -40 °C up to +125 °C | ||||
 | WR-PHD Stiftleisten, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten | – | – | – | – | – | – | – | – | Pins4 | TypGerade | MontageartTHT | Länge4 mm | – | Nennstrom2 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C | |||
 | WA-SNSR Self-Retaining Spacer, 4.8 mm, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWA-SNSR Self-Retaining Spacer | Bohrung in Blende4.8 mm | – | – | – | – | – | – | MaterialPA66 | – | – | – | Länge12.7 mm | – | – | – | Betriebstemperatur -30 °C up to +85 °C | |||
 | WR-PHD Kurzschlussbrücken, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Kurzschlussbrücken | – | – | – | – | – | – | – | – | 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 | – | – | – | – | – | – | – | – | Pins3 | TypGerade | MontageartTHT | Länge6 mm | – | Nennstrom2 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C |