ZXLD1370

Document number: DS32165 Rev. 6 - 2

33 of 40

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December 2016

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ZXLD1370

PCB Layout Considerations

PCB layout is a fundamental activity to get the most of the device in all configurations. In the following section it is possible to find some

important insight to design with the ZXLD1370 both in Buck and Buck-Boost configurations.

Figure 39 Circuit Layout

Here are some considerations useful for the PCB layout:



In order to avoid ringing due to stray inductances, the inductor L1, the anode of D1 and the drain of Q1 should be placed as close

together as possible.



The shaping capacitor C1 is fundamental for the stability of the control loop. To this end, it should be placed no more than 5mm from

the SHP pin.



and C4). In addition to these capacitors, it is suggested to add two ceramic capacitors of 1uF, X7R, 100V each (C2, C8), as well as a

used in buck mode, or can be driven from a separate supply.

SHP Pin

Decoupling

Inductor, Switch and

Freewheeling Diode