AN4170 datasheet(11/15 Pages) STMICROELECTRONICS

Nome de Peças	AN4170

Descrição Electrónicos	The STEVAL-CCA042V1 is a demonstration board designed for the evaluation

PDF	15 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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11 / 15 page

AN4170

PCB layout

Doc ID 023709 Rev 1

11/15

2.2.3

Layout recommendations

The following figures illustrate layout recommendations.

Solder the 100 nF bypass capacitors (X7R) as close as possible to the IC VCC pins

(recommended distance to be within 3 mm) in order to avoid spikes generated by the stray

inductance caused by the copper supply lines.

Figure 12.

Capacitors soldered as close as possible to VCC pins

Solder the snubber networks as close as possible to the IC related pin.

A voltage spike dangerous for device operation could occur if the snubber network is far

from the output pins. It is recommended that the distance between the snubber network and

the output pins be within 5 mm.

Figure 13.

Snubber networks soldered as close as possible to relevant IC pin

Ground pin and VCC pin of 100nF

capacitor should be directly

connected to the related IC pin

AN4170 Folha de dados(PDF) 11 Page - STMicroelectronics