Diodes Incorporated

Demoboard AP63201WU-EVM

32V, 2A, Synchronous DC/DC Buck Converter with Enhanced EMI Reduction

Topologie: Buck
Eingangsspannung (min.): 3.80 V
Eingangsspannung (max.): 32.00 V
Schaltfrequenz (max.): 500.00 kHz
Ausgang 1: 5.00 V / 2.000 A

Erstveröffentlichung am 01.06.2019, Version 1 vom


The AP63201 is a 2A, synchronous buck converter with a wide input voltage range of 3.8V to 32V and fully integrates a 125mΩ high-side power MOSFET and a 68mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion. The AP63201 device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated compensation network. The AP63201 has optimized designs for Electromagnetic Interference (EMI) reduction. The converter features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. It also has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further reduces high-frequency radiated EMI noise caused by MOSFET switching. The device is available in a low-profile, TSOT26 package.


  • VIN 3.8V to 32V
  • 2A Continuous Output Current
  • 0.8V ± 1% Reference Voltage
  • 22μA Ultralow Quiescent Current (Pulse Frequency Modulation)
  • 500kHz Switching Frequency
  • Supports Pulse Width Modulation (PWM)
  • Proprietary Gate Driver Design for Best EMI Reduction
  • Frequency Spread Spectrum (FSS) to Reduce EMI
  • Low-Dropout (LDO) Mode
  • Precision Enable Threshold to Adjust UVLO
  • Protection Circuitry
  • Undervoltage Lockout (UVLO)
  • Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown


  Artikel Nr. SPEC Produktserie RDC
Version RDC typ.
RDC max.
Tol. C VR
(V (DC))
Keramiktyp Betriebstemperatur H
Technische Artikelnummer Muster
74439346100 PDF WE-XHMI SMT Speicherdrossel 26.5 10 5 7.6 16 SMT
74439346068 PDF WE-XHMI SMT Speicherdrossel 17.6 6.8 6.5 10 21.5 SMT
74439344033 PDF WE-XHMI SMT Speicherdrossel 19.2 3.3 6 14.5 34 SMT
7447709150 PDF WE-PD SMT-Speicherdrossel 15 6.5 8 17 Standard 21 26
885012206102 PDF WCAP-CSGP MLCCs 0603 100 ±10% 100 2.5 10 X7R Klasse II -55 °C up to +125 °C 0.8 X7R0603101K100DFCT10000
885012206095 PDF WCAP-CSGP MLCCs 0603 100 ±10% 50 3 X7R Klasse II 0.8 X7R0603104K050DFCT10000