The MAX17523 evaluation kit (EV kit) is a fully assembled
and tested circuit board that demonstrates the MAX17523
adjustable overcurrent and overvoltage protector. The
EV kit features TVS diode on input and Schottky diode
on output. Input power to the EV kit uses a 4.5V to 36V
input supply.
The EV kit circuit can be configured to demonstrate the
device’s different current-limit types, adjustable overvoltage,
undervoltage, and current-limit threshold.
Quick Start
Required Equipment
●
MAX17523 EV kit
●
Multimeter
●
USB-A male to USB-B male cable or
5V DC power supply
●
36V DC power supply
Procedure
1)
2)
3)
4)
5)
Features
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
Verify that all jumpers are in their default positions.
Connect the USB cable to J1 from a computer or
connect a 5V DC power supply to TP3.
Verify that LED1 is on.
Connect a 20V DC power supply to IN. Verify that
OUT is 20V.
Increase voltage on the DC power supply and verify
that the OUT voltage goes down and
FLAG
goes low
when input reaches approximately 33V.
Decrease voltage on the DC power supply and verify
that OUT goes back and
FLAG
goes high when the
input reaches approximately 32V.
●
4.5V to 36V Operating Voltage Range
●
Features TVS Diode and Schottky Diode
●
Evaluates Three Current-Limit Types,
Current-Limit Threshold, OVLO, and UVLO
●
Proven PCB Layout
●
Fully Assembled and Tested
Ordering Information
appears at end of data sheet.
6)
19-8511; Rev 0;
12/16
MAX17523 Evaluation Kit
Evaluates: MAX17523
Detailed Description of Hardware
Current-Limit Threshold
The MAX17523 EV kit is a fully assembled and tested
circuit board that demonstrates the MAX17523 1A
adjustable overcurrent and overvoltage protector IC in a
16-pin surface-mount TQFN-EP package.
Using jumper JU1, the EV kit circuit can be configured to
evaluate different current-limit thresholds with a different
resistor on SETI. Using jumpers JU3–JU5, the EV kit circuit
can be configured to evaluate the internal OVLO/UVLO
threshold or external threshold using a resistor-divider.
Using jumpers JU14 and JU15, the EV kit circuit can be
configured to evaluate different current-limit types (autoretry,
latchoff, and continuous). The EV kit also features an LED
to indicate the power for logic pins.
The EV kit features a jumper (JU1) to select current-limit
threshold. Install a jumper as shown in
Table 2
to change
the current-limit threshold.
Use the following equation to calculate the current limit:
6100
R SETI ( k
Ω
)
=
ILIM (mA)
UVLO/OVLO Threshold
Use jumpers JU3–JU5 to select UVLO and OVLO threshold.
See
Table 3
for jumper settings.
Switch Control
The EV kit features two jumpers (JU6, JU8) to enable or
disable the switch. See
Table 4
for jumper settings and
Table 5
for switch status.
Table 1. LED Indicator
LED
LED1
NAME
POWER
DESCRIPTION
LED1 is on when the V
BUS
/5V supply
for the logic pins is powered
Table 2. Current-Limit Threshold (JU1)
JUMPER
SHUNT POSITION
1-2*
JU1
3-4
5-6
7-8
*Default position.
DESCRIPTION
Current limit 0.15A
Current limit 0.5A
Current limit 0.98A
Current limit adjustable
Table 3. UVLO/OVLO Threshold (JU3–JU5)
JUMPER
JU3
JU4
JU5
*Default position.
SHUNT POSITION
Installed*
Not installed
Installed*
Not installed
Installed
Not installed*
DESCRIPTION
UVLO connected to ground. Internal UVLO threshold is selected.
UVLO not connected to ground. Install JU5 to use external resistors to set UVLO threshold.
OVLO connected to ground. Internal OVLO threshold is selected.
OVLO not connected to ground. Install JU5 to use external resistors to set OVLO threshold.
Use external resistors to set the OVLO/UVLO threshold.
Not using external resistors to set the OVLO/UVLO threshold.
Table 4. Switch Control (JU6, JU8)
JUMPER
SHUNT
POSITION
1-2
2-3*
Installed*
JU8
*Default position.
Not
installed
DESCRIPTION
HVEN
connected to IN
through 100kΩ.
HVEN
connected to ground.
EN connected to VBUS.
EN connected to ground
through 100kΩ.
Table 5. Enable Inputs
HVEN
0
0
1
1
EN
0
1
0
1
SWITCH STATUS
On
On
Off
On
JU6
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MAX17523 Evaluation Kit
Evaluates: MAX17523
Reverse-Current Block Enable
Use jumper JU9 to enable or disable the reverse-current
flow protection. The reverse-current block is enabled
when
RIEN
is logic-low. See
Table 6
for jumper settings.
Output Load Capacitor
Use jumper JU13 to connect output to 330µF capacitor.
See
Table 9
for jumper settings.
Current-Limit Type Select
The EV kit features jumpers JU12, JU14, JU15 to select
different current-limit type and sampled time. See
Table 7
for jumper settings.
Table 6. Reverse-Current Block Enable
(JU9)
JUMPER
SHUNT
POSITION
Installed
JU9
*Default position.
Not
installed*
DESCRIPTION
RIEN
connected to V
BUS
.
RIEN
connected to ground
through 100kΩ.
Table 8. Logic Inputs
CLTS2
0
0
1
1
CLTS1
0
1
0
1
CURRENT-LIMIT TYPE
Latchoff
Autoretry
Continuous
Continuous
Table 7. Current-Limit Type Select
(JU12, JU14, JU15)
JUMPER
SHUNT
POSITION
1-2*
JU12
2-3
1-2*
2-3
1-2
2-3*
DESCRIPTION
CLTS_MODE high. CLTS1
and CLTS2 are sampled
continuously.
CLTS_MODE low. CLTS1 and
CLTS2 are sampled only when
V
IN
- V
OUT
< 0.6V.
CLTS1 high.
CLTS1 low.
CLTS2 high.
CLTS2 low.
Table 9. Output Load Capacitor (JU13)
JUMPER
SHUNT
POSITION
Installed
JU13
*Default position.
Not
installed*
DESCRIPTION
OUT connected to C7 and C8.
OUT not connected to
C7 and C8.
JU14
JU15
*Default position.
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Maxim Integrated
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MAX17523 Evaluation Kit
Evaluates: MAX17523
Component Suppliers
SUPPLIER
Bourns, Inc.
Fairchild Semiconductor
FCI Electronics Interconnection Solutions
Lite-On, Inc.
Lumex Inc.
Murata Americas
Panasonic Corp.
Phoenix Contact, Inc.
STMicroelectronics
TDK Corp.
www.bourns.com
www.fairchildsemi.com
www.fciconnect.com
www.us.liteon.com
www.lumex.com
www.murata.com
www.panasonic.com
www.phoenixcontact.com
www.us.st.com
www.component.tdk.com
WEBSITE
Note: Indicate that you are using the MAX17523EV when contacting these component suppliers.
Component Information, PCB Layout,
and Schematic
●
MAX17523 EV BOM
●
MAX17523 EV PCB Layout
●
MAX17523 EV Schematics
Ordering Information
PART
MAX17523EVKIT#
#Denotes RoHS compliant.
TYPE
EV Kit
See the following links for component information, PCB
layout diagrams, and schematic.
www.maximintegrated.com
Maxim Integrated
│
4
MAX17523 Evaluation Kit
Evaluates: MAX17523
Revision History
REVISION
NUMBER
0
REVISION
DATE
12/16
Initial release
DESCRIPTION
PAGES
CHANGED
—
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.
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 specifications without notice at any time.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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