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UC3750G-XX-AF5-R датащи(PDF) 8 Page - Unisonic Technologies

номер детали UC3750G-XX-AF5-R
подробное описание детали  600kHZ PWM/PFM STEP-DOWN DC-DC CONTROLLER
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производитель  UTC [Unisonic Technologies]
домашняя страница  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3750G-XX-AF5-R датащи(HTML) 8 Page - Unisonic Technologies

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UC3750
Preliminary
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
8 of 9
www.unisonic.com.tw
QW-R502-360.a
DESCRIPTION INFORMATION(Cont.)
12. PCB Layout Recommendations
Good PCB layout is important in switching mode power conversion. Careful PCB layout can minimize ground
bounce, EMI noise and unwanted feedbacks that can affect the converter performance.
13. Grounding
The output power return ground, the input power return ground and the device power ground should be
connected at the Star-ground. Feedback signal path must be separated from the main current path and sensing
directly at the anode of the output capacitor. All high current running paths must be thick enough for current flowing
through and producing insignificant voltage drop along the path.
14. Components Placement
Power components including input capacitor, inductor and output capacitor must be placed as close as possible.
All connecting traces must be short, direct and thick. In order to avoid unwanted injection of noise into the feedback
path high current flowing and switching paths must be kept away from the feedback pin terminal.
15. Feedback Path
Feedback of the output voltage must be separated from the power path. The output voltage sensing trace to the
feedback pin should be connected to the output voltage directly at the anode of the output capacitor.


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