AP6502A Просмотр технического описания (PDF) - Diodes Incorporated.
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AP6502A Datasheet PDF : 14 Pages
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AP6502A
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 feedback resistor
dividers must be placed
close to the FB
52mm
Input capacitor C1must be placed as
close as possible to the IC and to L1
AP6502ASP-13 is exposed at the bottom of the package and must be soldered directly to a well designed thermal pad on the PCB. This will help
to increase the power dissipation.
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 VF.
BST 4
AP6502A
5V
BOOST
DIODE
10nF
SW 3
Figure 7. External Bootstrap Compensation Components
Recommended Diodes:
Part Number
B130
SK13
Voltage/Current
Rating
30V, 1A
30V, 1A
Vendor
Diodes Inc.
Diodes Inc.
AP6502A
Document number: DS35812 Rev. 4 - 2
11 of 14
www.diodes.com
August 2015
© Diodes Incorporated
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