IC-Hersteller Analog Devices

IC-Hersteller (96)

Analog Devices LTM4642 | Demoboard DC2194A

20VIN, DUAL 4A or SINGLE 8A DC/DC μMODULE REGULATOR

Details

TopologieAbwärtswandler
Eingangsspannung2.5-20 V
Schaltfrequenz600-1400 kHz
Ausgang 11.8 V / 4 A
IC-RevisionA

Beschreibung

Demonstration circuit of DC2194A features theLTM®4642IY, the wide input voltage, high efficiency andpower density, dual 4A or single 8A DC/DC step-downμModule regulator. The step-down regulator operatesfrom an input voltage range of 4.5V to 20V (or 2.5V min.with 5V external bias voltage at CPWR) and provides anadjustable output voltage range from 0.6V to 5V at 4A loadcurrent per channel. The part is capable of operating indual phase single output, delivers up to 8A load currentwith interleaved two phases at 180 degrees. Differentialoutput voltage sensing is available on Channel 1 for applicationsrequiring more accurate output load regulation.A user-selectable mode input is provided to allow users totrade off ripple noise for light load efficiency: DiscontinuousMode (DCM) of operation delivers higher efficiencyat light load while Continuous Conduction Mode (CCM) ispreferred for noise sensitive applications. The mode pincan also be used to sync the switching frequency to anexternal clock. Programmable switching frequency rangeis from 600kHz to 1400kHz with a ±30% synchronizationcapture range. Constant on time, valley current modecontrol architecture and integrated internal control loopcompensation allow very fast transient response to lineand load changes while maintaining loop stability.It is recommended to read the data sheet and demomanual of LTM4642 prior using or making any changesto DC2194A.

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Downloads ProduktseriePinsReihenGenderTypIR
(A)
Verpackung Muster
60800213421SPEC
3 Dateien WR-PHD 2.00 mm Jumper with Test Point 2 Jumper 3 Beutel
62000311121SPEC
6 Dateien WR-PHD 2.00 mm THT Pin Header 3 Single Pin Header Gerade 2 Beutel
62000411121SPEC
6 Dateien WR-PHD 2.00 mm THT Pin Header 4 Single Pin Header Gerade 2 Beutel
62000621121SPEC
6 Dateien WR-PHD 2.00 mm THT Dual Pin Header 6 Dual Pin Header Gerade 2 Beutel
Muster
Artikel Nr. Daten­blatt Downloads ProduktseriePinsReihenGenderTypIR
(A)
Verpackung Muster