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IC-Hersteller Diodes Incorporated

IC-Hersteller (79)

Diodes Incorporated AP65550 | Demoboard AP65550SP-EVM

650kHz, 18V, 5A, COT Synchronous DC/DC Buck Converter

Details

Topologie Abwärtswandler
Eingangsspannung 4.5-18 V
Ausgang 1 1.05 V / 5 A
IC-Revision 2.0

Beschreibung

The AP65550 is an adaptive on-time modesynchronous buck converter providing highefficiency, excellent transient response andhigh DC output accuracy for low-voltageregulation in digital TV and monitor.The constant-on-time control schemehandles wide input/output voltage ratios andprovides low external component count. Theinternal proprietary circuit enables thedevice to adopt both low equivalent seriesresistance (ESR) output capacitors, such asSP-CAP or POSCAP and ultra-low ESRceramic capacitors.The adaptive on-time control supportsseamless transition between continuousconduction mode (CCM) at higher loadconditions and discontinuous conductionmode (DCM) at lighter load conditions.DCM allows AP65550 maintain highefficiency at light load conditions. TheAP65550 also features programmable softstart,UVLO, OTP and OCP to protect thecircuit.This IC is available in SO-8EP package.

Eigenschaften

  • Fixed Frequency Emulated Constant On-Time Control
  • Good Stability Independent of the Output Capacitor ESR
  • Fast Load Transient Response
  • Synchronous Rectification: 65mΩ Internal High-Side Switch and 36mΩ Internal Low-Side Switch
  • Wide Input Voltage Range: 4.5V to 18V
  • Output Voltage Range: 0.765V to 6V
  • 5A Continuous Output Current
  • 650kHz Switching Frequency
  • Built-in Over Current Limit
  • Built-in Thermal Shutdown Protection
  • Programmable Soft-Start
  • Pre-Biased Start-Up

Typische Anwendungen

  • Network Systems
  • Distributed power systems
  • Gaming Consoles / Flat Screen TV sets and Monitors / Set Top Boxes / Home Audio / Consumer electronics

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Downloads Produktserie C Tol. C VR
(V (DC))
Bauform Betriebstemperatur DF
(%)
Keramiktyp L
(mm)
W
(mm)
H
(mm)
Technische Artikelnummer L
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
Material Version Muster
885012207098
STE ALT EAG CAD LTS PSP CAD WCAP-CSGP MLCCs 50 V(DC) 100  nF ±10% 50 0805 2.5 X7R Klasse II 2 1.25 0.8 X7R0805104K050DFCT10000
885012207051
STE ALT EAG CAD LTS PSP CAD WCAP-CSGP MLCCs 16 V(DC) 1  µF ±10% 16 0805 5 X7R Klasse II 2 1.25 1.25 X7R0805105K016DFCT10000
885012209028
STE ALT EAG CAD LTS PSP CAD WCAP-CSGP MLCCs 25 V(DC) 10  µF ±10% 25 1210 5 X7R Klasse II 3.2 2.5 2 X7R1210106K025DFCT10000
744311150
STE ALT EAG CAD LTS PSP SPE IGS CAD WE-HCI SMT-Hochstrominduktivität 7040 -40 °C up to +150 °C 7 6.9 3.8 1.5 11 1.12 14 6.6 72 Superflux SMT
Artikel Nr. Daten­blatt
885012207098
885012207051
885012209028
744311150
Muster
Artikel Nr. Daten­blatt Downloads Produktserie C Tol. C VR
(V (DC))
Bauform Betriebstemperatur DF
(%)
Keramiktyp L
(mm)
W
(mm)
H
(mm)
Technische Artikelnummer L
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
Material Version Muster