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2007-06-01 - Divers/Site Internet - Anglais - 34 page(s)

De Lima Jader, Saez Richard, Dualibe Fortunato , "MC34716 : 3A 1MHz Dual Switch-Mode DDR PowerSupply(http://www.nxp.com/assets/documents/data/en/data-sheets/MC34716.pdf)"

  • Codes CREF : Circuits intégrés (DI2531)
  • Unités de recherche UMONS : Electronique et Microélectronique (F109)
  • Instituts UMONS : Institut NUMEDIART pour les Technologies des Arts Numériques (Numédiart)
  • Centres UMONS : Centre de Recherche en Technologie de l’Information (CRTI)

Abstract(s) :

(Anglais) The 34716 is a highly integrated, space-efficient, low cost, dual synchronous buck switching regulator with integrated N-channel power MOSFETs. It is a high performance point-of-load (PoL) power supply with its second output having the ability to track an external reference voltage. it provides a full power supply solution for Double-Data-Rate (DDR) Memories. Channel one provides a source only, 5.0 A drive capability, while channel two can sink and source up to 3.0 A. With its high current drive capability, channel one can be used to supply the VDDQ to the memory chipset. The second channel’s ability to track a reference voltage provides an ideal means of supporting the termination voltage (VTT) required by modern data buses such as Double-Data-Rate (DDR) memory buses,including, but not limited to DDR, DDR2, DDR3 and Low power DDR3/DDR4 memories. Both channels are highly efficient with tight output regulation. The 34716 also provides a buffered output reference voltage (VREFOUT) to the memory chipset. The 34716 SMARTMOS device offers a variety of control, supervisory and protection functions that simplify the implementation of complex designs. It is housed in a Pb-free, thermally enhancedand space efficient 26-pin exposed pad QFN. Features •50 mintegrated N-channel power MOSFETs • Input voltage operating range from 3.0 to 6.0 V • 1% accurate output voltages,ranging from 0.6 to 3.6 V • The second output tracks 1/2 an external reference voltage • 1% accurate buffered reference output voltage • Programmable switching frequency range from 200 kHz to 1.0 MHz • Programmable soft start timing for channel one • Over-current limit and short-circuit protection on both channels • Thermal shutdown • Output over-voltage and under-voltage detection • Active low power good output signal • Active low standby and shutdown inputs

Notes :
  • (Anglais) © 2016 NXP B.V