Rainbow Electronics MAX8760 - Manual (Page 38)

MAX8760
Dual-Phase, Quick-PWM Controller for AMD
Mobile Turion 64 CPU Core Power Supplies
38 ______________________________________________________________________________________
MAIN PHASE
INDUCTOR
POWER
GROUND
OUTPUT
SECONDARY PHASE
INPUT
CPU
KELVIN SENSE VIAS UNDER
THE SENSE RESISTOR
(REFER TO EVALUATION KIT)
C
OUT
C
IN
C
IN
C
IN
C
IN
C
IN
C
IN
C
OUT
C
OUT
C
OUT
C
OUT
C
OUT
INDUCTOR
R SENSE R SENSE
VIAS TO POWER
GROUND
CONNECT THE
EXPOSED PAD TO
ANALOG GND
CONNECT GND
AND PGND TO THE
CONTROLLER AT ONE POINT
ONLY AS SHOWN
PLACE CONTROLLER ON
BACK SIDE WHEN POSSIBLE,
USING THE GROUND PLANE
TO SHIELD THE IC FROM EMI
POWER GROUND
(2ND LAYER)
ANALOG GROUND
(2ND LAYER)
VIA TO ANALOG
GROUND
Figure 11. PC Board Layout Example