MAX17480GTL+ Maxim Integrated Products, MAX17480GTL+ Datasheet - Page 47

• Manufacturer Part Number: MAX17480GTL+
• Description: IC CTRLR SERIAL VID 40-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX17480GTL+

• Applications: Processor
• Current - Supply: 5mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 40-TQFN Exposed Pad
• Output Voltage Range: - 10 V to + 10 V
• Input Voltage Range: 4 V to 26 V
• Input Current: 5 mA
• Power Dissipation: 1778 mW
• Operating Temperature Range: - 40 C to + 105 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5) Make the DC-DC controller ground connections as
Figure 15. PCB Layout Example
CONNECT THE EXPOSED
shown in the standard application circuit (Figure 2).
This diagram can be viewed as having three sepa-
rate ground planes: input/output ground, where all
the high-power components go; the power ground
plane, where the PGND, V
and driver IC ground connection go; and the con-
troller’s analog ground plane, where sensitive ana-
log components, the MAX17480’s AGND pin, and
V
ground plane (AGND) must meet the power ground
USING MULTIPLE VIAS
CC
C
PAD TO POWER GND
VCC
bypass capacitor go. The controller’s analog
+
C
OUT3
______________________________________________________________________________________
L3
AGND PIN
C
DD
EQ
bypass capacitor,
CSP
CSN
AMD 2-/3-Output Mobile Serial
C
C
IN
IN
INDUCTOR
C
C
OUT
OUT
V
CORE0
6) Connect the output power planes (V
GROUND
POWER
V
DDNB
plane (PGND) only at a single point directly beneath
the IC. The power ground plane should connect to
the high-power output ground with a short, thick
metal trace from PGND to the source of the low-side
MOSFETs (the middle of the star ground).
and system ground planes) directly to the output
filter capacitor positive and negative terminals with
multiple vias. Place the entire DC-DC converter
circuit as close to the CPU as is practical.
V
CORE1
INDUCTOR
C
C
OUT
OUT
C
C
IN
IN
SPLIT CORE
CPU SOCKET
VID Controller
KELVIN-SENSE VIAS UNDER THE INDUCTOR
(REFER TO EVALUATION KIT)
INDUCTOR DCR SENSING
R
NTC
KELVIN-SENSE VIAS TO
R2
R1
INDUCTOR PAD
CORE
CSP
CSN
, V
OUT3
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