AP65201

Document number: DS36109 Rev. 3 - 3

11 of 14

www.diodes.com

December 2016

© Diodes Incorporated

AP65201

NOT RECOMMENDED FOR NEW DESIGN

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.

Figure 3

—PC Board Layout

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

AP65201

BST

SW

10nF

BOOST

DIODE

5V

Figure 4

—External Bootstrap Compensation Components

Recommended Diodes Incorporated:

Part Number

Voltage/Current

Rating

Vendor

B130

30V, 1A

Diodes Incorporated

SK13

30V, 1A

Diodes Incorporated