• ADP2441 Floating Pins

    Q 

    Which of the following ADP2441 pins can be left floating?

    PGOOD
    FREQ
    SS/TRK

     

    A 

    The PGOOD pin can be left floating if not used.

    The ADP2441 requires frequency resistor to be set in order to calculate
    switching frequency. It…

  • ADP2441 Precharge Startup

    Q 

    Does ADP2441 support a precharge startup?

     

    A 

    Yes, ADP2441 supports a precharged condition. If the output voltage is
    precharged prior to enabling, the control logic prevents inductor current
    reversal by holding the power MOSFETs off until…

  • ADP2441 VCC Pin

    Q 

    What is VCC pin in the ADP2441?

     

    A 

    VCC pin is the output of the internal low dropout regulator. Internal regulator
    supplies power for the internal controller and driver circuitry.  A 1 µF
    ceramic capacitor between VCC and AGND and a 1 µF…

  • ADP2441 Minimum ON Time

    Q 

    What is the minimum ON time of ADP2441?

     

    A 

    The maximum operating frequency is limited by the minimum on-time and the
    required duty cycle.  ADP2441 has minimum on time of 50ns.  Low minimum on-time
    makes ADP2441 suitable for applications…

  • ADP2441 Peak Current Limit

    Q 

    The ADP2441 has a peak current limit of 1.6A.  Does this mean I can operate
    the ADP2441 at 1.6A Load current?

     

    A 

    No, peak inductor current does not mean the average load current.  The average
    inductor current is equal to the output (load…

  • ADP2441: Heating Issue

    Hi there!

    This is my first post on this platform.

    I have adopted a circuit containing ADP2441 from the electromagnetic flow meter reference design to use in excitation (250mA) of electromagnetic flow meter.

    Reference Circuit:

    The problem I am facing…

  • ADP2441: Factors to Improve Efficiency

    Q 

    What are the factors I should keep in mind to improve the efficiency of my
    design?

     

    A 

    The ADP2441 has internal FETS that are optimized for high efficiency. ADP2441
    offers peak
    efficiency up to 94%.

    To further improve the efficiency…

  • ADP2441 Inverting Voltage Output Application

    Dear All:

    ADP2301 ADI有提供一个Reference Design (PRD1140)可以把Vin:+5V 变成Vout:-5V,但是现在我的Vin:30V Vout:+12V/120mA与-12V/120mA,我可以使用ADP2441达到正电压输入转正/负电压同时输出的原理图吗?请问有原理图可以提供给我参考吗?

    Best Regards,

    Jacky

  • ADP2441 Evaluation Board Gerber

    Dear Sir:

    I want to try follow ADP2441 EVB Board to design my PCB layout, can give me ADP2441-EVALZ EVB Board Gerber File to me reference? thanks

     

    Best Regards,
    Jacky

  • ADP2441 External Diode between SW and PGND

    Q 

    Do I need to connect an external diode between SW to PGND?

     

    A 

    ADP2441 is designed to reduce complexity of power supply design. It has
    internal high side and  low side FETS. It is not required to connect external
    diode between SW and PGND…