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Analog Devices LTC3311 | Demoboard DC3056A
3.3V to 1.2V at 12.5A, 2MHz Automotive Low EMI Buck Regulator in a 1.22cm2 Solution
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 3-5.5 V |
| Schaltfrequenz | 1800-2200 kHz |
| Ausgang 1 | 1.22 V / 12.5 A |
Beschreibung
Demonstration circuit 3056A features the LTC®3311,12.5A, low voltage synchronous step-down Silent Switcher® operating as a 2MHz, 2.25V–5.5V input,1.2V 12.5A output buck regulator. The LTC3311 supports output voltages from 0.5V to VIN with operating frequencies from 500kHz up to 5MHz. The LTC3311 is a compact,ultralow emission, high efficiency, and high speed synchronous monolithic step-down switching regulator. The Silent Switcher technology optimizes fast-current loops and makes it easier to minimize EMI/EMC emissions. Fast minimum on-time of 35ns enables high VIN to low VOUT conversion at high frequency.
Eigenschaften
- Pin Compatible with LTC3310/LTC3310S and LTC3311S
- Silent Switcher® Architecture
- Ultralow EMI Emissions
- High Efficiency—4.5mΩ NMOS and 16mΩ PMOS
- Wide Bandwidth, Fast Transient Response -Safely Tolerates Inductor Saturation in Overload
- VIN Range: 2.25V to 5.5V
- VOUT Range: 0.5V to VIN
- VOUT Accuracy: ±1% with Remote Sense
- Peak Current Mode Control
- Minimum On-Time: 35ns
- Programmable Frequency to 5MHz
- Precision 400mV Enable Threshold, 1μA in Shutdown
- Output Soft-Start with Voltage Tracking
- Power Good Output
- Die Temperature Monitor
- Configurable for Paralleling Power Stages in Forced Continuous Mode
- Thermally-Enhanced 3mm × 3mm LQFN Package
- AEC-Q100 Qualified for Automotive Applications
Typische Anwendungen
- Industrial, Distributed DC Power Systems (POL)
- Communications, Servers
- Automotive
- Telecom Power Supplies, FPGA, ASIC, µP Core Supplies
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | Z @ 100 MHz(Ω) | Zmax(Ω) | Testbedingung Zmax | IR(mA) | Z @ 1 GHz(Ω) | H(mm) | Typ | Pins | Montageart | L(mm) | Arbeitsspannung(V (AC)) | Betriebstemperatur | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-MPSB EMI Multilayer Power Suppression Bead, 100 Ω, 160 Ω | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-MPSB EMI Multilayer Power Suppression Bead | Impedanz @ 100 MHz100 Ω | Maximale Impedanz160 Ω | Maximale Impedanz1100 MHz | Nennstrom8000 mA | Impedanz @ 1 GHz150 Ω | Höhe2.3 mm | TypHochstrom | – | MontageartSMT | Länge4.5 mm | – | Betriebstemperatur -55 °C up to +125 °C | ||||
 | WR-PHD Kurzschlussbrücken, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Kurzschlussbrücken | – | – | – | Nennstrom3000 mA | – | – | – | Pins2 | – | – | 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 | – | – | – | Nennstrom2000 mA | – | – | TypGerade | Pins3 | MontageartTHT | Länge6 mm | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C |