Evaluates: MAX14727/
MAX14728/MAX14731
MAX14727 Evaluation Kit
General Description
Quick Start
The MAX14727 evaluation kit (EV kit) is a fully assembled
and tested circuit board that demonstrates the MAX14727
dual-input, bidirectional overvoltage protection with auto-
matic path control device. The EV kit comes with the
MAX14727EWV+ installed. To evaluate the MAX14728/
MAX14731, request a sample from Maxim and replace
the MAX14727 with the MAX14728/MAX14731.
Required Equipment
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MAX14727 EV kit
Two 15V DC power supply
USB Cable or 5V power supply
Multimeter
Procedure
Features
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
● 3V to 28V Operating Voltage Range
● LEDs Showing INAOK, INBOK
● Proven PCB Layout
1) Connect one power supply to INA and one power
supply to INB.
2) Connect voltmeter to OUT.
3) Connect USB cable to J1 or connect 5V power supply
on TP1 to source VIO.
4) Supply 4.5V to INA. Verify OUT is 4.5V and LED1
is on.
● Fully Assembled and Tested
EV Kit Contents
● EV Kit Board Containing a MAX14727
5) Increase voltage on INA and verify OUT voltage follows
INA voltage. Keep increasing INA voltage, when INA
reaches OVLO threshold 13.75V, OUT voltage goes
down and LED1 is off.
6) Decrease INA voltage, then OUT comes back to be
the same as INA voltage and LED1 is on. Turn off
INA power supply.
7) Supply 4.5V to INB. Verify OUT is 4.5V an LED2
is on.
Ordering Information appears at end of data sheet.
8) Increase voltage on INB and verify OUT voltage
follows INB voltage. Keep increasing INB voltage,
when INB reaches OVLO threshold 13.75V, OUT
voltage goes down and LED2 is off.
9) Decrease INB voltage, then OUT comes back to be
the same as INB voltage and LED2 is on.
10) Set INB voltage to 5V and verify OUT is 5V.
11) Set INA voltage to 3V and turn on INA power supply.
Verify OUT is still 5V.
12) Increase INA voltage. Verify when INA goes to about
4.5V, LED1 is on and OUT voltage is the same as
INA voltage.
319-100040; Rev 0; 7/17