IR3831MPBF Datasheet, PDF (27/31 Pages) International Rectifier – HIGHLY EFFICIENT INTEGRATED SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS

IR3831MPbF
Feedback
trace should
be kept
away form
noise
sources
Fig. 26b. IR3831 layout considerations –
Bottom Layer
PGnd
Analog
Ground
plane
Single point
connection between
AGND & PGND,
should be close to
the SupIRBuck, kept
away from noise
sources.
Fig. 26c. IR3831 layout considerations – Mid
Layer 1
PoweVr in
Ground
Plane
AGnd
11/05/10
Use separate traces
for connecting Boot
cap and Rocset to the
switch node and with
the minimum length
traces. Avoid big
loops.
Fig. 26d. IR3831 layout considerations – Mid
Layer 2
27