Evaluates: MAXM17515,
5A Integrated Power Module
MAXM17515 Evaluation Kit
General Description
The MAXM17515 evaluation kit (EV kit) is a fully assembled
and tested PCB that demonstrates the typical 5A appli-
cation circuit of the MAXM17515. The MAXM17515 is
a fixed-frequency, integrated inductor, step-down power
module for low-voltage, low-power applications.
The EV kit provides a 1.5V output voltage from a 2.4V
to 5.5V input range and delivers up to 5A output current
while achieving greater than 91.2% efficiency. The EV kit
operates at a 1MHz switching frequency and has superior
line and load-transient response. The EV kit also allows
the evaluation of other adjustable output voltages from
0.75V to 3.6V by changing resistors R1 and R2.
Features
●High-Integration Solution/Integrated Shielded
Inductor
●2.4V to 5.5V Input Range
●Configured for 1.5V Output Voltage
●Adjustable Output-Voltage Range (0.75V to 3.6V)
●5A Output Current
●91.2% Efficiency (VIN = 3.3V, VOUT = 1.5V at 1.5A)
●1MHz Switching Frequency
●Enable Input
●Power-Good Output Indicator (POK)
●Low-Profile, Surface-Mount Components
●Proven PCB Layout
●Fully Assembled and Tested
19-7608; Rev 0; 4/15
Ordering Information appears at end of data sheet.
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Evaluates: MAXM17515,
5A Integrated Power
Module
MAXM17515 Evaluation Kit
Quick Start
Recommended Equipment
●MAXM17515 EV kit
●2.4V to 5.5V DC power supply (VIN)
●5V DC power supply (VCC)
●Dummy load capable of sinking 5A
●Digital multimeter (DMM)
●100MHz dual-trace oscilloscope
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation. Caution: Do not turn on
the power supply until all connections are completed.
1) Ensure that the circuit is connected correctly to the
supplies and dummy load prior to applying any power.
2) Verify that a shunt is installed across jumper JU1.
3) Enable the power supply (VIN = 5V).
4) Observe the 1.5V output with the DMM and/or
oscilloscope. Look at the EP2 switching node while
varying the load current.
Detailed Description of Hardware
Input Supply Voltage
The EV kit can operate from a minimum 4.5V single DC
power supply at the VIN PCB pad with a shunt installed
across JU1. The EV kit is also configured to power a
lower input voltage at the VIN PCB pad, which requires an
additional 5V power supply at VCC PCB pad, a capacitor,
(C4) to be installed, and a connecting trace between VIN
and VCC (next to R3’s footprint) to be cut. Table 1 lists
all operating configurations of the EV kit at different input
voltage sources.
The electrolytic capacitor (C1) is required only when the
VIN power supply is situated far from the MAXM17515
circuit. On the bottom layer, additional footprints of optional
components are included to ease board modification for
different input/output configurations.
Enable Input
The EV kit features a 2-pin jumper (JU1) that selects the
enable/disable control input. The shunt is installed across
JU1 to enable the device and vice versa.
Switching Frequency (FREQ)
The EV kit features a PWM-mode switching frequency.
The switching frequency is fixed at 1MHz.
Programming the Output Voltage
The EV kit includes a default output programmed at 1.5V
and also produces an adjustable 0.75V to 3.6V output
voltage by connecting FB to a resistive divider. To obtain
an output voltage other than the default programmed
output, simply modify the R1 and R2 resistors with values
according to the following equation:
OUT FB
R1
V V1
R2
= +
where VFB = 0.75V. Output capacitance selection changes
are required for either an output voltage greater than 2V
or the capacitor temperature rises above 105°C. Refer
to the MAXM17515 IC data sheet for output capacitance
selection.
Table 1. Jumper JU1 Functions
*The thin trace connecting VIN and VCC (next to R3’s footprint)
must be cut before applying the additional power supply to the
VCC PCB pad.
SHUNT (JU1)
POSITION VIN/VCC RANGE REGULATOR
OUTPUT
Installed VIN = 4.5V to 5.5V
VCC = VIN Enabled
Installed
VIN = 2.4V to 5.5V
Require an additional
VCC = 4.5V to 5.5V
Enabled
Not installed* VIN = 2.4V to 5.5V
VCC = VIN
Disabled
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Evaluates: MAXM17515,
5A Integrated Power
Module
MAXM17515 Evaluation Kit
EFFICIENCY
vs. OUTPUT CURRENT
MAXM17515EV toc01
OUTPUT CURRENT (mA)
EFFICIENCY (%)
1k
65
70
75
80
85
90
95
100
60
100 10k
VOUT = 1.5V
VCC = 5.0V
VIN = 5V
VIN = 3.3V
LOAD CURRENT TRANSIENT RESPONSE
(VIN = 5V, VOUT = 1.5V, IOUT = 2.5A TO 5A)
MAXM17515EV toc03
VOUT
IOUT
50mV/div
(AC-COUPLED)
5A/div
1ms/div
VOLTAGE RIPPLE
(VIN = 5V, VOUT = 1.5V, IOUT = 5A)
MAXM17515EV toc02
VIN
VOUT
IIN
IOUT
100mV/div
(AC-COUPLED)
20mV/div
(AC-COUPLED)
5A/div
5A/div
1µs/div
STARTUP WAVEFORM
(VIN = 5V, VOUT = 1.5V, IOUT = 5A)
MAXM17515EV toc04
VOUT
IIN
IOUT
VEN
5V/div
1V/div
5A/div
5A/div
1ms/div
SHUTDOWN WAVEFORM
(VIN = 5V, VOUT = 1.5V, IOUT = 5A)
MAXM17515EV toc05
VOUT
IIN
IOUT
VEN
5V/div
1V/div
5A/div
5A/div
1ms/div
(VCC = 5V, VIN = 3.3V to 5V, VOUT = 1.5V, IOUT = 0–5A, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
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Evaluates: MAXM17515,
5A Integrated Power
Module
MAXM17515 Evaluation Kit
Note: Indicate that you are using the MAXM17515 when contacting these component suppliers.
SUPPLIER WEBSITE
Keystone Electronics Corp. www.keyelco.com
Lite-On, Inc. www.liteon.com
Murata Americas www.murata.com
Panasonic Corp. www.panasonic.com
TDK Corp. www.component.tdk.com
Component Suppliers
Component List and Schematic
Refer to the following files attached to this data sheet for
component information and schematic:
●MAXM17515_EV_BOM.xls
●MAXM17515_Schematic.pdf
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Evaluates: MAXM17515,
5A Integrated Power
Module
MAXM17515 Evaluation Kit
Figure 1. MAXM17515 EV Kit Component Placement Guide—
Component Side
Figure 2. MAXM17515 EV Kit Component Placement Guide—
Solder Side
Figure 3. MAXM17515 EV Kit PCB Layout—Component Side
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Evaluates: MAXM17515,
5A Integrated Power
Module
MAXM17515 Evaluation Kit
Figure 4. MAXM17515 EV Kit PCB Layout—PGND Layer 2 Figure 5. MAXM17515 EV Kit PCB Layout—PGND Layer 3
Figure 6. MAXM17515 EV Kit PCB Layout—Solder Side
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Evaluates: MAXM17515,
5A Integrated Power
Module
MAXM17515 Evaluation Kit
#Denotes RoHS compliant.
PART TYPE
MAXM17515EVKIT# EV Kit
Ordering Information
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2015 Maxim Integrated Products, Inc.
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Evaluates: MAXM17515,
5A Integrated Power
Module
MAXM17515 Evaluation Kit
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 4/15 Initial release —
Revision History
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
