Evaluates: MAX14727/ MAX14727 Evaluation Kit MAX14728/MAX14731 General Description Quick Start The MAX14727 evaluation kit (EV kit) is a fully assembled Required Equipment and tested circuit board that demonstrates the MAX14727 MAX14727 EV kit dual-input, bidirectional overvoltage protection with auto- Two 15V DC power supply matic path control device. The EV kit comes with the MAX14727EWV+ installed. To evaluate the MAX14728/ USB Cable or 5V power supply MAX14731, request a sample from Maxim and replace Multimeter the MAX14727 with the MAX14728/MAX14731. Procedure Features The EV kit is fully assembled and tested. Follow the steps 3V to 28V Operating Voltage Range below to verify board operation: LEDs Showing INAOK, INBOK 1) Connect one power supply to INA and one power supply to INB. Proven PCB Layout 2) Connect voltmeter to OUT. Fully Assembled and Tested 3) Connect USB cable to J1 or connect 5V power supply on TP1 to source VIO. EV Kit Contents 4) Supply 4.5V to INA. Verify OUT is 4.5V and LED1 EV Kit Board Containing a MAX14727 is on. 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. Ordering Information appears at end of data sheet. 7) Supply 4.5V to INB. Verify OUT is 4.5V an LED2 is on. 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 7/17Evaluates: MAX14727/ MAX14727 Evaluation Kit MAX14728/MAX14731 Digital Inputs Detailed Description Use USB cable or external power supply to power digital The MAX14727 EV kit is a fully assembled and tested inputs. Use JU1, JU4, JU7, and JU8 to control digital circuit board demonstrating the MAX14727 dual-input, inputs (Table 1). bidirectional overvoltage protection with automatic path control device in a 30-bump WLP package. Output Load LEDs Use JU3, and JU5 to add output capacitor or resistor (Table 2). LED1/LED2 turns on when INAOK/INBOK is asserted. Overvoltage Threshold Use JU9, and JU10 to choose internal or external over- voltage threshold setting (Table 3). Table 1. JU1, JU4, JU7, JU8 Jumper Setting JUMPER SHUNT POSITION DESCRIPTION Installed PCON is high (no beak before make time) JU1 Not installed* PCON is low (break before make time enabled) Installed EN is high (device disabled) JU4 Not installed* EN is low (device enabled) Installed OTG ENB high (channel B OTG enabled) JU7 Not installed* OTG ENB low (channel B OTG disabled) Installed OTG ENA high (channel A OTG enabled) JU8 Not installed* OTG ENA low (channel A OTG disabled) Table 2. JU3, JU5 Jumper Setting JUMPER SHUNT POSITION DESCRIPTION Installed 100F capacitor is connected to OUT JU3 Not installed* 100F capacitor is not connected to OUT Installed 50 resistor is connected to OUT JU5 Not installed* 50 resistor is not connected to OUT *Default position. Table 3. JU9, JU10 Jumper Setting JUMPER SHUNT POSITION DESCRIPTION 1-2 OVLOA is connected to resistor divider. Using external overvoltage threshold. JU9 2-3* OVLOA is connected to ground. Using internal overvoltage threshold. 1-2 OVLOB is connected to resistor divider. Using external overvoltage threshold. JU10 2-3* OVLOB is connected to ground. Using internal overvoltage threshold. *Default position. Ordering Information PART TYPE MAX14727EVKIT EVKIT Denotes RoHS compliant. Maxim Integrated 2 www.maximintegrated.com