Diodes AP65200 Manuel d'utilisateur télécharger pdf (Page 12)

AP65200

Document number: DS35548 Rev. 6 - 2

12 of 18

www.diodes.com

January 2014

NEW PRODUCT

P65200

Application Information (cont.)

PC Board Layout

This is a high switching frequency converter. Hence attention must be paid to the switching currents interference in the layout. Switching current

from one power device to another can generate voltage transients across the impedances of the interconnecting bond wires and circuit traces.

These interconnecting impedances should be minimized by using wide, short printed circuit traces.

External Bootstrap Diode

It is recommended that an external bootstrap diode be added when the input voltage is no greater than 5V or the 5V rail is available in the

system. This helps to improve the efficiency of the regulator. This solution is also applicable for D > 65%. The bootstrap diode can be a low cost

one such as BAT54 or a Schottky that has a low V

Figure 7 External Bootstrap Compensation Components

Recommended Diodes:

Part Number

Voltage/Current

Rating

Vendor

B130 30V, 1A Diodes Inc

SK13 30V, 1A Diodes Inc

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Diodes AP65200 Manuel d'utilisateur Page 12