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IC-Hersteller MaxLinear

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MaxLinear XR79120 | Demoboard XR79120EVB

22V, 20A Synchronous Step Down COT Power Module

Details

Topologie Sonstige Topologie
Schaltfrequenz 400-600 kHz
IC-Revision 1.1

Beschreibung

Power Module for point-of load supplies. A wide 4.5V to 22V input voltage range allows for single supply operation from industry standard 5V, 12V, and 19.6V rails.With a proprietary emulated current mode Constant On-Time (COT) control scheme, the XR79120 provides extremely fast line and load transient response using ceramic output capacitors. It requires no loop compensation hence simplifying circuit implementation and reducing overall component count. The control loop also provides 0.12% load and 0.17% line regulation and maintains constant operating frequency. A selectable power saving mode allows the user to operate in discontinuous mode (DCM) at light current loads thereby significantly increasing the converter efficiency. With a 93% peak efficiency and 84% for loads as low as 100mA, the XR79120 is suitable for applications where low power losses are important.A host of protection features, including over-current, over-temperature, short-circuit and UVLO, help achieve safe operation under abnormal operating conditions.The XR79120 is available in a RoHS compliant, green/halogen free space-saving 74-pin 12x14x4mm QFN package. With integrated controller, drivers, bootstrap diode and capacitor, MOSFETs, inductor, CIN and COUT, this solution allows the smallest possible 20A POL design.

Eigenschaften

  • MOSFETs, Inductor, CIN and COUT integrated in one package
  • 20A Step Down Module
  • Wide 4.5V to 22V Input Voltage Range
  • ≥0.6V Adjustable Output Voltage
  • Proprietary Constant On-Time Control
  • No Loop Compensation Required
  • Ceramic Output Cap. Stable operation
  • Programmable 200ns-2μs On-Time
  • Constant 400kHz-600kHz freq.
  • Selectable CCM or CCM/DCM Operation
  • 74-pin 12x14x4mm QFN package

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Downloads Produktserie P
(mm)
Blade Design Reihen Gender Typ IR
(A)
Verpackung Muster
61300111121
IGE STE 3D ALT EAG CAD WR-PHD 2.54 mm THT Pin Header 2.54 Single Pin Header Gerade 3 Beutel
61300311121
IGE STE 3D ALT EAG CAD WR-PHD 2.54 mm THT Pin Header 2.54 Single Pin Header Gerade 3 Beutel
7471287
STE ALT EAG IGS CAD WA-MTAB Mounting Tabs 5.08 6.35 mm Männlich Vertikal Beutel
Artikel Nr. Daten­blatt
61300111121
61300311121
7471287
Muster
Artikel Nr. Daten­blatt Downloads Produktserie P
(mm)
Blade Design Reihen Gender Typ IR
(A)
Verpackung Muster