Komplet dual step-down DC/DC µModule

Komplet dual step-down DC/DC µModule

Linear Technology udvider µModule familen med 4A DC/DC regulator i 15x15 mm SMD-pakning (in english).

Linear Technology introduces the LTM4619, a complete dual step-down DC/DC µModule regulator system, including inductors and MOSFETs in a tiny surface mount package. The LTM4619 regulates two output voltages ranging from 0.8V to 5V at up to 4A each from an input supply of 4.5V to 26.5V (28V abs max).

The outputs are regulated with 180º out-of-phase operation to minimize input ripple current, thus requiring fewer input capacitors. This complete dual DC/DC system solution includes all the necessary components for two point-of-load regulator circuits: inductors, bypass capacitors, DC/DC controllers, compensation circuitry and power switches.

All components are encapsulated and protected within a plastic surface mount LGA (land grid array) package. Package dimensions are 15mm x 15mm with only 2.8mm of thickness, providing a low profile point-of-load regulator for more efficient air cooling in densely populated circuit boards.

The LTM4619 is a simple single part dual DC/DC solution in an IC form factor, designed for systems requiring localized multirail regulation from input supplies such as 5V, 12V or 24V. Applications range from avionics and medical systems to datacom and enterprise equipment.

The LTM4619 has guaranteed total DC output error of only ±1.5%, which encompasses errors from the reference voltage as well as line and load regulation. As a current mode device with high switching frequency, the LTM4619 has very fast transient response to line and load changes while operating with excellent stability with a variety of external output capacitors. The efficiency is nominally 89% for 12VIN to 3.3VOUT at 4A. The device supports output voltage tracking and safety features, including overvoltage and overcurrent protection.

The LTM4619 is guaranteed for operation from -40ºC to 125ºC (internal temperature). The device is RoHS compliant with the ability to be soldered with Pb-free (lead-free) and Pb-based solder during board assembly. The LTM4619 is now available, priced at $16.75 each in 1,000-piece quantities. For more information, visit www.linear.com.

26/8 2009
  • Strålingstolerant GaN-baseret POL-konverter

    Strålingstolerant GaN-baseret POL-konverter

    power ›Microchip præsenterer POL-05-20S-T, der er en strålingstolerant point-of-load (POL) konverter, der er designet til at imødekomme de høje effektkrav i rumapplikationer med mere (in english).
  • RECOM powerdesigns integreres nu i CELUS designplatformen

    RECOM powerdesigns integreres nu i CELUS designplatformen

    power ›En række af RECOM's powerdesigns bliver nu en del af CELUS designplatformen, hvor de indgår i 37 af CELUS's såkaldte CUBO's, der kan beskrives som digitale datablade (in english)
  • Ultrakompakt 600W AC/DC-strømforsyning

    Ultrakompakt 600W AC/DC-strømforsyning

    power ›Vox Power har udvidet sin EIRE-familie af single-output AC/DC-strømforsyninger med EIRE600, der er kompakt 600 W-strømforsyning, som måler blot 5 × 3 tommer og har en ekstremt lav profil på 1,1 tommer (in english).
  • 3,300 V SiC MOSFET-modul til industrielt udstyr

    3,300 V SiC MOSFET-modul til industrielt udstyr

    power ›Toshiba lancerer ny 3,300 V SiC MOSFET-modul til industrielt udstyr, der kan hånterere høje peak-strømme, hvilket er med til at forøge systempålideligheden.
  • Navitas og NVIDIA samarbejder om 800 V til 12 V power-delivery board

    Navitas og NVIDIA samarbejder om 800 V til 12 V power-delivery board

    power ›Navitas og NVIDIA udvikler 24 kW power-delivery board, der i ét trin kan konvertere 800 VDC direkte til 12 VDC og dermed eliminere 50 V IBC powertrinnet, hvilket booster systemeffektiviteten og reducerer boardstørrelsen (in english).
  • Rohde & Schwarz afholder power-seminarer

    Rohde & Schwarz afholder power-seminarer

    t-og-m ›Rohde & Schwarz afholder henholdsvis den 3. november (Aalborg) og 4. november (Sønderborg) heldagsseminarer, der fokuserer på forskellige testaspekter med relation til powerelektronik.
  • Microchip og Navitas samarbejder om 800V referencedesign

    Microchip og Navitas samarbejder om 800V referencedesign

    power ›Microchip og Navitas udvikler 800V-til-6V referencedesign, der kombinerer digital powerkontrol og hardwarebaseret sikkerhed, der kan accelerere udviklingen af højeffektive OCP (Open Compute Project) rack power applikationer.
  • Lavspændings GaN FETs til AI datacentre og robotløsninger

    Lavspændings GaN FETs til AI datacentre og robotløsninger

    aktive-komponenter-og-embedded-sw ›Renesas udvider porteføljen af GaN-komponenter med første 100V E-mode GaN, der bl.a. vil være oplagt at bruge i datacentre og forskellige typer af robotter (in english).