MPS MPM3695-25 Manuale utente

User Guide

MPM3695-25 Evaluation Kit (EVKT-MPM3695-25-A)

USER GUIDE –MPM3695-25 EVALUATION KIT (EVKT-MPM3695-25)

MPM3695-25 Evaluation Kit User Guide rev 1.1 MonolithicPower.com 1

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Table of Contents

Overview...................................................................................................................................................2

Introduction...............................................................................................................................................2

Kit Contents ..............................................................................................................................................2

Features and Benefits...............................................................................................................................3

Kit Specifications ......................................................................................................................................3

Section 1. Hardware Specifications..........................................................................................................4

1.1 Personal Computer Requirements................................................................................................4

1.2 EVM3695-25-RF-02A Specifications ..............................................................................................4

1.3 EVKT-USBI2C-02 Specifications..................................................................................................4

Section 2. Software Requirements ...........................................................................................................5

2.1 Software Installation......................................................................................................................5

Section 3. Evaluation Kit Test Set-Up.......................................................................................................6

3.1 Hardware Set-Up ..........................................................................................................................6

3.2 Powering up the EVB....................................................................................................................6

3.3 Software Set-Up............................................................................................................................6

3.4 Device Programming Instructions.................................................................................................9

3.5 Troubleshooting Tips ..................................................................................................................11

Section 4. Ordering Information..............................................................................................................13

USER GUIDE –MPM3695-25 EVALUATION KIT (EVKT-MPM3695-25)

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Overview

Introduction

The EVKT-MPM3695-25-A is an evaluation kit for the single-phase configuration of the MPM3695-25.

The MPM3695-25 is a 4mm tall, scalable, and fully integrated power module with a PMBus interface.

The MPM3695-25 offers a complete power solution that achieves up to 25A of output peak current with

excellent load and line regulation over a wide input voltage range. MPS’s proprietary, multi-phase

constant-on-time (MCOT) control provides ultra-fast transient response and simple loop compensation.

This kit allows for quick evaluation and module configurations through PMBus interface.

Kit Contents

EVKT-MPM3695-25-A Kit contents: (items listed below can be ordered separately).

Part Number

Item

Quantity

EVM3695-25-RF-02A

MPM3695GRF-25 single-phase evaluation board

EVKT-USBI2C-02

Evaluation kit for the PMBus communication interface

MPM3695GRF-25-0022

MPM3695GRF-25 module

Tdrive-MPM3695-25-A

USB thumb drive that contains the Virtual Bench GUI

installation file and supplemental documents

Figure 1: EVKT-MPM3695-25-A Evaluation Kit Set-Up

Input Power

Supply

Input

Output

Load

USB

Cable

Ribbon Cable

Evaluation

Board

Virtual Bench

V3.0

USB to PMBus

communication interface

EVKT-USBI2C-02

USER GUIDE –MPM3695-25 EVALUATION KIT (EVKT-MPM3695-25)

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Features and Benefits

The MPM3695 is highly customizable. Users can program the power module via the MPS PMBus and

multi-time programming (MTP) memory.

⚠

Values written to the registers via PMBus will NOT be retained once the module is powered-sown

unless they are written into the MTP memory

⚠

To write to the MTP memory, the input voltage must be greater than 8V.

The key programmable features are highlighted below:

Current limit

Switching frequency

Operation mode –pulse skip mode (PSM) or continuous conduction mode (CCM)

Output voltage

Soft-start time

Fault threshold

Kit Specifications

Features

Specification

Input Voltage

4V - 16V (without external VCC)

3V - 16V (with external 3.3V VCC)

Output Voltage

0.5V to 5V (default: 1.8V)

Maximum Output Current

20A continuous, 25A peak

Default Switching Frequency

600kHz

Operating Systems Supported

Windows 7 or later

System Requirements

Minimum 22.2 MB free

EVB Size (L x W)

6.4cm x 6.4cm

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Section 1. Hardware Specifications

1.1 Personal Computer Requirements

The following minimum requirement must be met to use the EVKT-MPM3695-25-A.

Operating System of Windows XP, 7 or later

Net Framework 4.0

PC with a minimum of one available USB port

At least 22.2 MB of free space

1.2 EVM3695-10-QQ-03A Specifications

The EVM3695-25-RF-02A is the evaluation board for the MPM3695GRF-25. For more information

regarding the evaluation board, please refer to the EVM3695-25-RF-02A datasheet.

Feature

Specification

Input Voltage

4V - 16V (without external VCC)

3V - 16V (with external 3.3V VCC)

Output Voltage

0.5V to 5V (default: 1.8V)

Maximum Output

Current

20A continuous, 25A peak

EVB Size (L x W)

6.4cm x 6.4cm

Figure 2: EVM3695-25-RF-02A Evaluation

Board

1.3 EVKT-USBI2C-02 Specifications

The EVKT-USBI2C-02 is the PMBus and I2C communication interface device, which connects the EVB

and the PC, and its supporting accessories. Together with MPS Virtual Bench Pro GUI tool, it provides

a quick and easy way to evaluate the performance of MPS digital products. For more details, refer to

the EVKT-USBI2C-02 datasheet.

Figure 2: EVKT-USBI2C-02 Communication Interface Device

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Section 2. Software Requirements

2.1 Software Installation

The MPS Virtual Bench Pro GUI tool provide an easy way to access the registers, program the MTP

memory, and monitor the key parameters of MPS power modules. Follow the instructions below to

install the software.

1. Plug the USB thumb drive into the computer using any available USB port.

2. Open the folder containing the thumb drive contents.

3. Double click the .exe file to open the set-up guide (see Figure 4).

4. Follow the prompts in the set-up guide.

5. Wait for status screen to verify that installation is complete.

Figure 3: MPS Virtual Bench Pro GUI Set-Up Guide

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Section 3. Evaluation Kit Test Set-Up

3.1 Hardware Set-Up

The hardware must be properly configured prior to use. Follow the instructions below to set up the EVB.

1. Connect the PMBus cable to the evaluation board and the EVKT-USBI2C-02 communication

interface device.

2. Connect the EVKT-USBI2C-02 communication interface device to your PC using the USB cable,

and follow the instructions below to set up the EVB.

Figure 5: EVB to MPS I2C Communication Interface Device Wire Connection

3.2 Powering up the EVB

1. Connect the positive and negative terminals of the load to the VOUT and GND pins, respectively.

2. Set the output voltage of a bench power supply between 4V and 16V before connecting to the EVB

to prevent damage. Then turn off the power supply.

3. Connect the positive and negative terminals of the power supply to the VIN and GND pins,

respectively.

4. Turn the power supply on. The EVB will power up automatically.

3.3 Software Set-Up

After connecting the hardware according to steps above, please follow the following steps to set-up

software.

1. Open Virtual Bench Pro. The software will scan the connected power modules.

If the GUI detects the power module, an address will appear below the "MPM3695-25" on the

left panel. Additionally, the indicator to the left of “MPM3695-25”will turn green (see Figure 6).

Please refer to the troubleshooting section if the power module cannot be detected

automatically.

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Figure 6: Green Indicator Shows Successful Connection

2. The Register Control menu will appear in the middle panel. The values stored in the registers of the

module will be read automatically (see Figure 7).

Figure 7: Values in the Register of the Module are Displayed

3. Change the register value as desired. A valid input must be entered. Otherwise, an alert will appear,

and the entered value will not be accepted. (see Figure 8).

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Figure 8: Enter Desired Values in the Register

4. Click the “Write to chip” button to write values to the register (see Figure 9).

Figure 9: Write Values Steps Shown in Table

⚠

Please note that the values written to the registers will NOT be saved once the EVB is powered

down unless they are written into the MTP memory (refer to Section 3.4).

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3.4 Device Programming Instructions

The MTP memory of MPM3695 can be custom programmed. Follow the instructions outlined below to

create and export customized configurations.

1. Connect the EVB to a PC following the steps listed in Section 3.3.

2. Set the register values as desired and upload them into the registers (step 3-4 in Section 3.3).

3. Increase the input voltage of the EVB to 12V.

4. Click the write to MTP button and wait until the writing action is completed.

5. Turn off the power supply to the EVB, wait three seconds, and turn it on for the new configuration to

take effect.

Figure 10: Write to the MTP Memory

6. Export the configuration by clicking "configuration." Select the desired directory for the exported file

and click “OK.”Your configurations will be saved in a text file (see Figure 11).

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