ACT4525 datasheet(8/11 Pages) ACTIVE-SEMI

No. de pieza	ACT4525

Descripción Electrónicos	40V/3.5A CV/CC Buck Converter with USB Auto ?밆etect

PDF	11 Pages

Scroll/Zoom	100%

Fabricante Electrónico	ACTIVE-SEMI [Active-Semi, Inc]

Página de inicio	http://www.active-semi.com

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8 / 11 page

ACT4525

Rev1.1, December 17th, 2015

Innovative PowerTM

- 8 -

www.active-semi.com

APPLICATIONS INFORMATION

PC Board Layout Guidance

When laying out the printed circuit board, the

following checklist should be used to ensure proper

operation of the IC.

1) Arrange the power components to reduce the

AC loop size consisting of CIN, VIN pin, SW pin

and the Schottky diode.

2) Place input decoupling ceramic capacitor CIN as

close to VIN pin as possible. CIN is connected

power GND with vias or short and wide path.

3) Use “Kelvin” or “4-wire” connection techniques

from the sense resistor pads directly to the CSP

and CSN1, CSN2 pins.

4) Use copper plane and thermal vias for GND for

best heat dissipation and noise immunity.

5) Use short trace connecting HSB-CHSB-SW loop.

6) SW pad is noise node switching from VIN to

GND. It should be isolated away from the rest

of circuit for good EMI and low noise operation.

ACT4525 Datasheet(PDF) 8 Page - Active-Semi, Inc