IC-Hersteller Onsemi

IC-Hersteller (103)

Onsemi NCV8851B | Demoboard NCV8851BDBGEVB

NCV8851B Automotive Grade Synchronous Buck Controller

Details

TopologieAbwärtswandler
Eingangsspannung4.5-40 V
Schaltfrequenz170-500 kHz
Ausgang 15 V / 3 A
IC-Revision2

Beschreibung

The NCV8851B Evaluation Board provides a convenientway to evaluate and integrate a complete high-efficiencysynchronous buck converter design. No additionalcomponents are required, other than dc supplies for the inputvoltage and enable pin. The board also can be connected toan external clock source to synchronize the switchingfrequency or for spread spectrum operation. The board isconfigured for a 5.0 V output with a 170 kHz switchingfrequency and a 4 A current limit, intended for applicationsrequiring over 3 A of current

Eigenschaften

5.0 V Output Voltage

  • 91% Efficiency at 3 A
  • 4 A Average Current Limit (ACL)
  • 170 kHz Switching Frequency
  • Average Current Mode Control
  • Automotive Grade for up to TA = 105°C
  • Wide Input Voltage Range of 4.5 V to 40 V
  • Regulates through Load Dump Conditions
  • 1.0 A Maximum Quiescent Current in Sleep Mode
  • Programmable Fixed Frequency – 170 kHz to 500 kHz
  • External Clock Synchronization up to 600 kHz
  • Easy to Modify for Other Applications

Weiterführende Informationen

Artikeldaten

Artikel Nr.
Daten­blatt
Simu­lation
Downloads
Status
Produktserie
L(µH)
ISAT,10%(A)
ISAT,30%(A)
IR,40K(A)
IRP,40K(A)
RDC max.(mΩ)
fres(MHz)
Bauform
Version
Muster
WE-PD Speicherdrossel, 15 µH, 8 A
Simu­lation
Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.
Induktivität15 µH
Sättigungsstrom 18 A
Sättigungsstrom @ 30%9.8 A
Nennstrom6.5 A
Performance Nennstrom7.4 A
Gleichstromwiderstand26 mΩ
Eigenresonanzfrequenz17 MHz
Bauform1210 
VersionGestanzt