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Evaluates: MAX14906

MAX14906 Evaluation Kit

12) Select

Config1 register (0x0A) and set the SLEDSet

bit to 0 in the

Setting cell to autonomously control

all four STATUS LEDs by the internal logic. The font

color of the modified register is changed from black to

red. Click the

Write Selected button to write the new

configuration into the register.

13) By default, the GUI is set for DO High-Side Mode. In

the

System tab of the GUI, select the desired output

mode (High-side, High-side 2x Inrush Current, Ac-

tive Clamp Push-pull or Simple Push-pull) and select

On to set D_ logic input high, thus the corresponding

DOI_ output is enabled/turned on. Notice that the cor-

responding status LED (SLED_) lights up.

14) Select

Off in the pulldown menu to set the D_ logic in-

put low to turn off the corresponding DOI_ output. Verify

that the SLED_ is turned off, which indicates that the

DOI_ output is turned off.

15) Repeat steps 13 and 14 to verify other DOI_ outputs

and check that the status LED (SLED_) follows the

input setting.

16) In the

System tab select DI Mode for all DOI_ chan-

nels in the pulldown menu in the first column. This

configures the DOI1 to DOI4 channels to Type 1 and

3 digital-input mode (DI mode) and sets D1 to D4 log-

ic pins to logic outputs.

17) Connect the negative terminal of the 24V DC power

supply to the GND test point. Connect the positive

terminal of the 24V DC power supply to the DOI1 test

point.

18) Using a voltmeter, verify D1 logic output is approxi-

mately 5V by probing the D1 test point.

19) Set the DC power supply output to be less than 6V.

20) Using a voltmeter, verify D1 logic output is approxi-

mately 0V by probing the D1 test point.

21) Repeat steps 17 to 20 to verify other DOI_ input be-

havior.

Detailed Description of Hardware

The MAX14906 EV kit allows the user to evaluate all

features and operational modes of the MAX14906, four-

channel digital-output, digital-input device.

External Power Supplies

The EV kit is powered from a single power supply and

accepts a wide range of supply voltages, from 10V to 40V

DC. The power is applied through two banana jacks, VDD

(+) and GND (-).

can be powered by the internal 5V linear regulator when

by an external 5V DC supply when J7 is in the 1–2 position.

Refer to Table 1 for details.

Table 1. MAX14906 Board Shunt Positions and Settings (continued)

*Default configuration

HEADER

SHUNT

POSITION

DESCIPTION

J7

1–2

Connect REGEN to GND to disable the internal regulator. Connect an external 5V supply between

Open*

J8

1–2

Open*

and G1 is turned on.

J9

1–2

Open*

and G2 is turned on.

J10

1–2

Open*

and G3 is turned on.

J11

1–2

Open*

and G4 is turned on.