LTC3731 Linear Technology, LTC3731 Datasheet - Page 23

• Manufacturer Part Number: LTC3731
• Description: Synchronous Buck Switching Regulator Controller
• Manufacturer: Linear Technology

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APPLICATIO S I FOR ATIO
which is less than one third of the normal, full load
conditions. Incidentally, since the load no longer dissi-
pates any power, total system power is decreased by over
90%. Therefore, the system actually cools significantly
during a shorted condition!
V
IN
R
BOLD LINES INDICATE HIGH,
SWITCHING CURRENT LINES.
KEEP LINES TO A MINIMUM
LENGTH
IN
+
C
IN
U
U
W
Figure 11. Branch Current Waveforms
SW1
SW2
SW3
D2
U
D1
D3
L1
L2
L3
PC Board Layout Checklist
When laying out the printed circuit board, the following
checklist should be used to ensure proper operation of the
IC. These items are also illustrated graphically in the layout
diagram of Figure 11. Check the following in the PC layout:
R
R
R
SENSE2
SENSE3
SENSE1
C
OUT
3731 F11
V
+
OUT
LTC3731
23
3731fa
R
L