FAN2106_09 FAIRCHILD [Fairchild Semiconductor], FAN2106_09 Datasheet - Page 13

• Manufacturer Part Number: FAN2106_09
• Description: 3-24V Input, 6A, High-Efficiency, Integrated Synchronous Buck Regulator
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

© 2009 Fairchild Semiconductor Corporation
FAN2106 • Rev. 1.1.0
R
changes in V
gain increases as V
difficult to compensate the loop. For low-input-voltage-
range designs (3V to 8V), R
component values are different compared to designs
with V
Application note
calculate the compensation components.
RAMP
IN
also provides feedforward compensation for
between 8V and 24V.
IN
. With a fixed R
AN-8022 (TinyCalc™)
IN
is reduced; this could make it
RAMP
RAMP
and the compensation
value, the modulator
can be used to
13
Recommended PCB Layout
Good PCB layout and careful attention to temperature
rise is essential for reliable operation of the regulator.
Four-layer PCB with two-ounce copper on the top and
bottom sides and thermal vias connecting the layers are
recommended. Keep power traces wide and short to
minimize losses and ringing. Do not connect AGND to
PGND below the IC. Connect the AGND pin to PGND at
the output OR to the PGND plane.
V
Figure 26. Recommended PCB Layout
OUT
SW
GND
V
IN
www.fairchildsemi.com
GND