20A IntelliMOS Power Stage with Temperature Sense

Topologie: Buck
Eingangsspannung (min.): 7.00 V
Eingangsspannung (max.): 16.00 V
Schaltfrequenz (min.): 200.00 kHz
Schaltfrequenz (max.): 1000.00 kHz
Ausgang 1: 1.20 V / 20.000 A

Erstveröffentlichung am 10.02.2015, Version 1.0


The MIC4520/MIC4521 is an IntelliMOS power stage family capable of delivering up to 20A in a compact 4 x 6mm TQFN package. The MIC4521 is a two phase power stage (includes MOSFET drivers and power MOSFETs) featuring integrated current and temperature sensing. The MIC4521 can be interfaced with a single phase controller (such as Micrel’s MIC2111) to build a complete high current and high performance power converter. The MIC4520 is a single phase power stage that can operate with a single phase or multiphase controller. The MIC4520/MIC4521 utilizes Micrel’s high performance FETZilla™ DMOS technology to achieve high efficiency (over 90% peak).


  • 7V to 16V input voltage range
  • 3.3V logic tri-state PWM signal 560kHz to 1.2MHz switching frequency range
  • 90% efficiency for a 12V to 2.5V/20A conversion
  • Integrated temperature sensing (10mV/°C)
  • 2-phase power stage operates from 1-phase controller (MIC4521)
  • Mode selection pin for CCM/DCM operation
  • Single tri-state PWM
  • Integrated MOSFETs, drivers, and thermal monitors


  Artikel Nr. SPEC Produktserie L
RDC max.
RDC typ.
Material LR
7443320100 PDF WE-HCC SMT-Hochstrominduktivität 1 24 32 2.5 1.85 Ferrite 0.9 96