Datasheet

V
IN
V
OUT
GND GND
PS
VSEL
GND
EN
C
OUT
C
OUT
C
IN
R1
R2
L
TPS63010
TPS63011
TPS63012
www.ti.com SLVS653B –JUNE 2008–REVISED MAY 2012
LAYOUT CONSIDERATIONS
As for all switching power supplies, the layout is an important step in the design, especially at high peak currents
and high switching frequencies. If the layout is not carefully done, the regulator could show stability problems as
well as EMI problems. Therefore, use wide and short traces for the main current path and for the power ground
tracks. The input capacitor, output capacitor, and the inductor should be placed as close as possible to the IC.
Use a common ground node for power ground and a different one for control ground to minimize the effects of
ground noise. Connect these ground nodes at any place close to one of the ground pins of the IC.
The feedback divider should be placed as close as possible to the control ground pin of the IC. To lay out the
control ground, it is recommended to use short traces, separated from the power ground traces. This avoids
ground shift problems, which can occur due to superimposition of power ground current and control ground
current.
Figure 32. PCB Layout Suggestion
Copyright © 2008–2012, Texas Instruments Incorporated Submit Documentation Feedback 21
Product Folder Link(s): TPS63010 TPS63011 TPS63012