Datasheet

Rs
3 Rs4
Rs1
Cd
Cd
Cd
Cd
+ 12 V
+ 3 .3 V
TPS 2363
SH12 A
SH 12 B
SL 12 A
SL 12 B
SH 33 A
SL 33 A SL 33 B
SH 33 B
TPS2363
SLUS680B –JANUARY 2006–REVISED JANUARY 2010 www.ti.com
Layout Considerations
Since the main voltage inputs to the TPS2363 are also the sense resistor inputs, some consideration must be
given to the layout for accurate read-back of the output currents.
See Figure 9 and Figure 10
• Sense resistors are close to the TPS2363
• TPS2363 pins SH12A/B and SH33A/B are not connected to inner layer power.
• Connect the high side sense resistor to inner layer power.
• Use a 0.1 mF to decouple the sense resistors close to the TPS2363.
• Do not make additional connection SH12A to SH12B or SH33A to SH33B.
• Depending on system conditions, it may be necessary to place a 1-nF capacitor either across the sense
resistor or from the low side of the sense resistor to ground close to the TPS2363.
Figure 9. Sense Resistor – Power Layout
Figure 10. Sense Resistor Routing
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Product Folder Link(s): TPS2363