AN2713 datasheet(22/40 Pages) STMICROELECTRONICS

Teilenummer	AN2713

Bauteilbeschribung	LNB power supply based on the LNBH23 supply

PDF	40 Pages

Scroll/Zoom	100%

Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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22 / 40 page

Layout guidelines

AN2713

22/40

Doc ID 14431 Rev 1

5.1

PCB layout

Any switch mode power supply requires a good PCB layout in order to achieve maximum

performance. Component placement, and GND trace routing and width are the major

issues. Basic rules commonly used for DC-DC converters for good PCB layout should be

followed.

All traces carrying current should be drawn on the PCB as short and as thick as possible.

This should be done to minimize resistive and inductive parasitic effects, and increase

system efficiency.

White arrows indicate the suggested PCB (ring) ground plane to avoid spikes on the output

voltage (this is related to the switching side of the LNBH23). Good soldering of the ePad

helps on this issue.

Figure 12.

STEVAL-CBL003V1 PCB top layer

Figure 13.

STEVAL-CBL003V1 PCB bottom layer

AM01388v1

AN2713 Datenblatt(PDF) 22 Page - STMicroelectronics