MAX15062B Evaluation Kit Evaluates: MAX15062B
Component List
19-6638; Rev 0; 4/13
Ordering Information appears at end of data sheet.
General Description
The MAX15062B evaluation kit (EV kit) is a fully assem-
bled and tested circuit board that demonstrates the
performance of the MAX15062B 60V, 300mA ultra-small,
high-efficiency, synchronous step-down converter. The
EV kit operates over a wide 6.5V to 60V input voltage
range, and provides up to 300mA at the preset 5V output.
The device features undervoltage lockout, overcurrent
protection, and thermal shutdown. The EV kit switches
at a fixed frequency of 500kHz, and delivers a peak
efficiency of 92% with the supplied components.
The EV kit comes installed with the MAX15062BATA+
in an 8-pin (2mm x 2mm) lead(Pb)-free/RoHS-compliant
TDFN package.
Features
● 6.5Vto60VInputVoltageRange
● 5VOutput,300mAContinuousCurrent
● InternalCompensation
● EN/UVLOforOn/OffControlandProgrammable
InputUndervoltageLockout
● 92%PeakEfficiency
● 500kHzFixed-FrequencyPWMOperation
● PFMorForced-PWMModeofOperation
● HiccupModeOvercurrentProtection
● Open-DrainRESETOutput
● ThermalShutdown
● ProvenPCBLayout
● FullyAssembledandTested
Component Suppliers
Note: Indicate that you are using the MAX15062B when contacting these component suppliers.
DESIGNATION QTY DESCRIPTION
C1 1
22µF, 100V electrolytic capacitor
(8mm x 10.2mm)
PanasonicEEEHA2A220UP
C2 1
1µF ±10%, 100V X7R ceramic
capacitor (1206)
MurataGRM31CR72A105KA
C3 1
1µF ±10%, 6.3V X7R ceramic
capacitor (0603)
MurataGRM188R70J105K
C4 1
10µF ±10%, 6.3V X7R ceramic
capacitor (1206)
MurataGRM31CR70J106K
JU1–JU3 3 2-pin headers
DESIGNATION QTY DESCRIPTION
L1 147µH,560mAinductor
Coilcraft,Inc.LPS4018-473ML
R1 1 3.32MΩ±1%resistor(0402)
R2 1 768kΩ±1%resistor(0402)
R3 1 100kΩ±1%resistor(0402)
U1 1
60V, 300mA, ultra-small, high-
efciency,synchronousstep-
downDC-DCconverter(8TDFN)
Maxim MAX15062BATA+
— 3 Shunts
— 1 PCB:MAX15062BEVALUATION
KIT
SUPPLIER PHONE WEBSITE
Coilcraft,Inc. 847-639-6400 www.coilcraft.com
MurataElectronicsNorthAmerica,Inc. 770-436-1300 www.murata-northamerica.com
PanasonicCorp. 800-344-2112 www.panasonic.com
MaximIntegrated
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MAX15062B Evaluation Kit Evaluates: MAX15062B
www.maximintegrated.com
Quick Start
Recommended Equipment
● MAX15062BEVkit
● 60Vadjustable,0.5ADCpowersupply
● Electronicloadupto300mA
● Voltmeter
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) Verify that shunts are installed on jumpers JU1 and
JU2(EN/UVLO).
2)
VerifythatjumperJU3(MODEPFMoperation)isopen
.
3) Set the electronic load to constant-current mode,
300mA, and disable the electronic load.
4) Connecttheelectronicload’spositiveterminaltothe
VOUTPCBpad.Connectthenegativeterminaltothe
GNDPCBpad.
5) Connect the voltmeter across the VOUT and GND
PCBpads.
6) Setthepower-supplyoutputto24V.Disablethepower
supply.
7) Connectthe24Vpower-supplyoutputtotheVINPCB
pad.ConnectthesupplygroundtotheGNDPCBpad.
8) TurnonthepowersupplyandverifythatVOUTisat
5V with respect to GND.
9) EnabletheelectronicloadandverifythatVOUTisat
5V with respect to GND.
Detailed Description
The MAX15062B evaluation kit (EV kit) is a fully assem-
bled and tested circuit board that demonstrates the per-
formance of the MAX15062B 60V, 300mA ultra-small,
high-efficiency, synchronous step-down converter. The
EV kit operates over a wide 6.5V to 60V input voltage
range, and provides up to 300mA at the preset 5V output.
The device features undervoltage lockout, overcurrent
protection, and thermal shutdown. The EV kit switches
at a fixed frequency of 500kHz, and delivers a peak
efficiency of 92% with the supplied components.
TheEVkitincludesanEN/UVLOPCBpadandjumpers
JU1 and JU2 to enable control of the converter output.
The MODE PCB pad and jumper JU3 are provided for
selecting the mode of operation of the converter. The
VCCPCBpadhelpsmeasuretheinternalLDOvoltage.
An additional RESETPCBpadisavailableformonitoring
the open-drain logic output.
Enable Control (JU1, JU2)
The EN/UVLO pin of the device serves as an on/off
control while also allowing the user to program the input
undervoltage lockout (UVLO) threshold. Jumpers JU1
andJU2configuretheEVkit’soutputforturn-on/turn-off
control.Installashuntacrosspins1-2onjumperJU2to
disableVOUT.SeeTable1forproperjumpersettings.
Additionally, resistors R1 and R2 are included to set the
UVLOtoadesiredturn-onvoltage.RefertotheEnable
Input (EN/UVLO), Soft-Start section in the MAX15062A/
MAX15062BICdatasheet foradditionalinformationon
settingtheUVLOthresholdvoltage.
Table 1. Enable Control (EN/UVLO)
*Default position.
SHUNT POSITION EN/UVLO PIN VOUT OUTPUT
JU1 JU2
1-2 Open ConnectedtoVIN Enabled
Open 1-2 ConnectedtoGND Disabled
1-2* 1-2 Connectedtomidpointofthe
R1, R2 resistor-divider EnabledatVIN≥6.5V
MaximIntegrated
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MAX15062B Evaluation Kit Evaluates: MAX15062B
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Table 2. Mode Control (JU3)
Active-Low Open-Drain Reset Output (RESET)
TheEVkitprovidesaPCBpadtomonitorthestatusof
the RESET output. RESETgoeshighwhenVOUTrises
above 95% (typ) of its nominal regulated output volt-
age. When VOUT falls below 92% (typ) of its nominal
regulated voltage, RESET is pulled low.
PFM or Forced-PWM Mode (MODE)
TheEVkitincludesajumper(JU3)toprogramthemode
ofoperationoftheconverter.InstallashuntacrossJU3
beforepoweringuptheEVkittoenabletheforced-PWM
operation.KeepJU3opentoenablethelight-loadPFM
operation.SeeTable2forproperJU3configuration.
*Default position.
EV Kit Performance Report
SHUNT
POSITION MODE PIN MODE OF
OPERATION
1-2 Connectedto
GND ForcedPWM
Open* Unconnected PFM
EFFICIENCY vs. LOAD CURRENT
MAX15062B EV toc01
LOAD CURRENT (mA)
EFFICIENCY (%)
10
40
50
60
70
80
90
100
30
1 100
VIN = 48V
VIN = 36V
VIN = 24V
VIN = 12V
PFM MODE
EFFICIENCY vs. LOAD CURRENT
MAX15062B EV toc02
LOAD CURRENT (mA)
EFFICIENCY (%)
25020015010050
10
20
30
40
50
60
70
80
90
100
0
0 300
VIN = 48V
VIN = 36V
VIN = 24V VIN = 12V
PWM MODE
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX15062B EV toc03
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
25020015010050
5.00
5.02
5.04
5.06
5.08
5.10
4.98
0 300
PFM MODE
VIN = 24V
VIN = 12V, 36V, 48V
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX15062B EV toc04
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
25020015010050
4.998
4.999
5.000
5.001
5.002
5.003
4.997
0 300
PWM MODE
VIN = 48V
VIN = 24V
VIN = 36V
VIN = 12V
LOAD TRANSIENT RESPONSE—
PFM MODE (LOAD CURRENT
STEPPED FROM 5mA TO 150mA)
MAX15062B EV toc05
VOUT (AC)
100mV/div
IOUT
100mA/div
100µs/div
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MAX15062B Evaluation Kit Evaluates: MAX15062B
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EV Kit Performance Report (continued)
LOAD TRANSIENT RESPONSE—
PFM OR PWM MODE (LOAD CURRENT
STEPPED FROM 150mA TO 300mA)
MAX15062B EV toc06
VOUT (AC)
100mV/div
IOUT
100mA/div
20µs/div
LOAD TRANSIENT RESPONSE—
PWM MODE (LOAD CURRENT
STEPPED FROM NO LOAD TO 150mA)
MAX15062B EV toc07
VOUT (AC)
100mV/div
IOUT
100mA/div
20µs/div
SOFT-START
MAX15062B EV toc08
EN/UVLO
5V/div
IOUT
100mA/div
VOUT
1V/div
1ms/div
RESET
5V/div
BODE PLOT
MAX15062B EV toc09
2 4 6 8 1 2 4 6 8 1 2
GAIN (dB)
PHASE (°)
FREQUENCY (kHz)
1 10 100
-50
-40
-30
-20
-10
0
10
20
30
40
50
-180
-144
-108
-72
-36
0
36
72
108
144
180
GAIN
PHASE
fCR = 47kHz,
PHASE MARGIN = 60°
MaximIntegrated
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MAX15062B Evaluation Kit Evaluates: MAX15062B
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Figure 1. MAX15062B EV Kit Schematic
C3
1µF
1
VIN
LX 8
7
4
6
GND
L1
47µH
C4
10µF
6.3V
EN/UVLO
U1
MAX15062B
MODE
2
3
5
R1
3.32MΩ
1%
C1
22µF
100V
R2
768kΩ
1%
VCC
VCC
JU1
1
2
JU2
1
2
C2
1µF
100V
JU3
1
2
MODE
EN/UVLO
6.5V TO 60V
VOUT
5V, 300mA
GND
RESET
R3
100kΩ
1%
GND
RESET
VOUT
VIN
VCC
VCC
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MAX15062B Evaluation Kit Evaluates: MAX15062B
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Figure 2. MAX15062B EV Kit Component Placement Guide—
Component Side
Figure 3. MAX15062B EV Kit PCB Layout—Component Side
Figure 4. MAX15062B EV Kit PCB Layout—Solder Side
1.0” 1.0”
1.0”
MaximIntegrated
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MAX15062B Evaluation Kit Evaluates: MAX15062B
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#Denotes RoHS compliant.
Ordering Information
PART TYPE
MAX15062BEVKIT# EVKIT
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 specications without notice at any time.
MAX15062B Evaluation Kit Evaluates: MAX15062B
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2013 MaximIntegratedProducts,Inc.
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Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
04/13 Initialrelease —
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.
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