MAX15303 datasheet(4/18 Pages) MAXIM

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Evaluates: MAX15303

MAX15303 Evaluation Kit

An additional SMB input connector is provided for the

SYNC pin at J3, allowing an external clock source to be

supplied to the IC.

Output Current Calibration

One feature of the IC is the ability to report the actual

load current. This functionality relies on properly calibrat-

ed IOUT_CAL_GAIN and IOUT_CAL_OFFSET values,

which have been calculated and stored in the IC firmware

during the EV kit production process. Any change to the

output inductor requires recalibrating these parameters to

ensure that the GUI reports an accurate output current.

This is a simple process that is described in Application

Note 5601: Current Calibration Procedure for InTune

Digital Power, which is available on the Maxim website.

System Evaluation with Multiple EV Kits

Multiple Maxim Intune EV kits can be coupled together to

emulate a fully PMBus-enabled multiple-rail system. Each

EV kit must be set to a different SMBus address. Power

must be applied to each EV kit. Follow these steps to

create a multiple-rail system:

1) Set the address for each EV kit by moving the

address jumper.

2) Set the output voltage for each EV kit by moving the

VOUT jumper (

Note: VOUT can be changed later

through the PMBus interface).

3) Connect multiple EV kits together using connectors

J1 and J2.

4) Connect the PowerTool USB dongle to any one of the

EV kits.

5) Apply a power connection to every EV kit.

6) Set the enable switches to the ENABLE or ON

positions, except for one, which should be left in

the DISABLE or OFF position. Note that the enable

signals are combined together.

7) Apply the input voltage.

8) Start the PowerTool GUI to begin monitoring the

devices.

Figure 2 provides an example of one MAX15301 and two

MAX15303 EV kits connected together.

Figure 2. Multiple EV Kits Connected Together

MAX15303 Datasheet(PDF) 4 Page - Maxim Integrated Products

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