Datasheet

MAX15041 Evaluation Kit
Evaluates: MAX15041
2 ______________________________________________________________________________________
Note: Indicate that you are using the MAX15041 when contacting these component suppliers.
Component Suppliers
Quick Start
Required Equipment
• 28Vadjustable,3Apowersupply
• Electronic load capable of sinking up to 3A
(e.g., HP 6060B)
• Twodigitalvoltmeters(DVMs)
Procedure
The MAX15041 EV kit is fully assembled and test-
ed. Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Verify that a shunt is installed across pins 1-2 of
jumperJU1.(EVkitenabled)
2) Connect the power-supply positive and ground
terminals to the VIN and PGND PCB pads, respec-
tively.
3) Connect the positive and negative terminal of the
electronic load to the VOUT and PGND PCB pads,
respectively.
4) Connect a DVM across the VOUT and PGND PCB
pads.
5) Connect a DVM across the PGOOD and SGND PCB
pads.
6) Turn on the power supply.
7) Set the power-supply voltage to 12V.
8) Enable the 3A electronic load.
9) Verify that the voltmeter connected to VOUT
measures 3.3V.
10) Verify that the voltmeter connected to PGOOD mea-
sures approximately 5V.
Detailed Description of Hardware
The MAX15041 EV kit circuit uses a MAX15041 step-
down converter IC to implement a step-down DC-DC
converter circuit. The MAX15041 IC is available in a
16-pin TQFN surface-mount package and features a
fixed 350kHz switching frequency and internal low
R
DS-ON
MOSFETs to achieve high efficiency and lower
overall system cost. The MAX15041 EV kit operates over
a wide input-voltage range of 4.5V to 28V.
The MAX15041 EV kit is configured to 3.3V using resis-
tors R5 and R6 and delivers up to 3A of output current.
The EV kit circuit soft-start startup time is set to 1.2ms
using capacitor C7. The EV kit also provides a PGOOD
PCB pad to monitor the IC power-good output signal
and an EN PCB pad to enable/disable the EV kit VOUT
output.
Input Power Source
The MAX15041 EV kit VOUT output is optimized to
provide up to 3A when operating with an input-voltage
source of 4.5V to 28V applied at the VIN and PGND pads.
Refer to the TOC 19, 20, and 21 curves in the Typical
Operating Characterisitc section in the MAX15041 IC
data sheet for current deration for different EV kit VIN
inputs and VOUT outputs .
Configuring the Output Voltage (VOUT)
The MAX15041 EV kit step-down converter output volt-
age is configured to 3.3V by resistors R5 and R6. The EV
kit’s output voltage (VOUT) can be reconfigured in the
0.606V to 0.9 x VIN range by replacing resistors R5 and
R6. Use the following equation to reconfigure the output
voltage to the desired value:
OUTV
R5 R6 1
0.606
 
= × −
 
 
where V
OUT
is the desired output voltage, R6 is 10kI
(typ), and R5 is in kilohms.
SUPPLIER PHONE WEBSITE
Diodes, Inc. 805-446-4800 www.diodes.com
Murata North America Electronics, Inc. 770-436-1300 www.murata-northamerica.com
Panasonic Corp. 800-344-2112 www.panasonic.com
Sumida Corp. 847-545-6700 www.sumida.com