MAX17480EVKIT+ Maxim Integrated Products, MAX17480EVKIT+ Datasheet - Page 12

• Manufacturer Part Number: MAX17480EVKIT+
• Description: Power Management Modules & Development Tools EVAL KIT FOR MAX17480
• Manufacturer: Maxim Integrated Products

Specifications of MAX17480EVKIT+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The offset and current-limit settings of the NB SMPS can
be set by the ILIM3 pin setting. Table 10 shows the
ILIM3 pin voltage levels and the corresponding settings
for the offset and current limit of the NB SMPS. Refer to
the NB SMPS Offset and the Peak Current Limit sections
in the MAX17480 IC data sheet for a detailed descrip-
tion of the respective features. The 12.5mV NB SMPS
offset is always present regardless of PSI_L setting.
The MAX17480 EV kit is configured for combined-mode
operation with GNDS2 connected to VDDIO through
R74 (PC trace short). To work with the address change
feature, the MAX17480 could alternatively be config-
ured in combined mode by connecting GNDS1 to
VDDIO and using GNDS2 as the remote ground-sense
connection. To do this, remove R21 and use a wire to
connect GNDS1 to VDDIO. Then cut the PC trace short
at R74 and install resistor R13 (100Ω, 0603) and capac-
itor C16 (4700pF, 0603).
The SW1–SW4 switches and the EV kit software con-
trols the combined SMPS and VOUT_NB outputs in
combined mode. In combined mode, the MAX17480
SMPS only responds to Core 0 commands. Core 1
commands are ignored.
In combined mode, unchecking the Power-Saving Off
checkbox in the software sets the MAX17480 SMPS into
single-phase operation. Checking the Power-Saving
Off checkbox in the software sets the MAX17480 SMPS
into dual-phase operation.
MAX17480 Evaluation Kit
Table 10. Jumper JU3 Function (ILIM3)
* Default position.
12
SHUNT POSITION
______________________________________________________________________________________
1-2*
2-3
Offset and Current-Limit Setting for
Combined-Mode Operation
Connected to GND
Connected to VDD
ILIM3
NB SMPSs (ILIM3)
PEAK CURRENT LIMIT
5.25
4.25
(A)
Separate-mode operation can be evaluated by
installing the MAX17480 onto the MAX17080 EV kit.
Alternatively, separate-mode evaluation on the
MAX17480 EV kit can be done by separating C5 and
C6 from C7 and C8 and connecting GNDS2 to the low-
end remote sense of Core 1 (CORESENSE1_L). This is
accomplished by making the following changes to the
EV kit:
1) Uninstall capacitor C19.
2) Cut the VCORE0 planes (top and bottom sides) in
3) Cut the short at R74.
4) Install resistor R13 (100Ω, 0603) and capacitor C16
The SW1–SW4 pushbutton switches and the EV kit soft-
ware still control the core SMPSs (VCORE0 and
VCORE1) and VOUT_NB outputs in separate mode. In
separate mode, the MAX17480 SMPS1 responds to
Core 0 commands and SMPS2 responds to CORE 1
commands.
In separate mode, unchecking the Power-Saving Off
checkbox in the software sets each MAX17480 SMPS
into one-phase skip mode (power-saving mode).
Checking the Power-Saving Off checkbox in the soft-
ware sets each MAX17480 SMPS in PWM mode.
half. Cut along the exposed copper that runs
through the planes.
(4700pF, 0603).
MAX DC CURRENT (A)
4.75
3.75
Separate-Mode Operation
FULL-LOAD DROOP
-26.13
-20.63
(mV)