Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsDev KitsStarter kit

User's Guide

SLVU879–February 2013

DRV8839 Evaluation Module

This document is provided with the DRV8839 customer evaluation module (EVM) as a supplement to the

DRV8839 datasheet. It details the hardware implementation of the EVM.

Contents

1 PCB (Top-Assembly View) ................................................................................................ 2

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

2.1 Power Connectors ................................................................................................. 2

2.2 Test Points .......................................................................................................... 2

2.3 Jumpers ............................................................................................................. 3

2.4 Speed Adjust Potentiometer (R2 and R10) ..................................................................... 4

2.5 Motor Outputs ...................................................................................................... 5

2.6 Operation of the EVM ............................................................................................. 5

3 DRV8839 Schematic ....................................................................................................... 6

4 DRV8839 Bill of Materials .................................................................................................. 7

List of Figures

1 PCB (Top Assembly View) ................................................................................................ 2

2 ENABLE Jumpers (EN1 and EN2) ....................................................................................... 3

3 SLEEP SELECT (nSLP) Jumper ......................................................................................... 4

4 Speed Adjust Potentiometer (R2 and R10).............................................................................. 4

5 DRV8839EVM Schematic.................................................................................................. 6

SLVU879–February 2013 DRV8839 Evaluation Module

Submit Documentation Feedback

Summary of content (16 pages)

PAGE 1
User's Guide SLVU879 – February 2013 DRV8839 Evaluation Module This document is provided with the DRV8839 customer evaluation module (EVM) as a supplement to the DRV8839 datasheet. It details the hardware implementation of the EVM. 1 2 3 4 Contents PCB (Top-Assembly View) ................................................................................................ Introduction .................................................................................................................. 2.
PAGE 2
PCB (Top-Assembly View) 1 www.ti.com PCB (Top-Assembly View) Figure 1. PCB (Top Assembly View) 2 Introduction The DRV8839EVM is a complete solution for evaluating the DRV8839 low voltage brushed DC motor driver. It includes a MSP430 microcontroller that is preprogrammed to take input from two dedicated analog potentiometers, for PWM speed control of 2 motors. Two enable jumpers provide the ability to HIZ the motor outputs.
PAGE 3
Introduction www.ti.com 2.3 Jumpers There are three jumpers normally installed on the EVM. Two jumpers, EN1 and EN2, control the enable inputs on the DRV8839 and are used to enable or disable the motors attached to O1 and O2. The other jumper, labeled nSLP, controls the low-power state, or sleep state, on the DRV8839. 2.3.1 ENABLE Jumpers (EN1 and EN2) The EN1 and EN2 jumpers are found in Figure 2.
PAGE 4
Introduction www.ti.com Figure 3. SLEEP SELECT (nSLP) Jumper 2.4 Speed Adjust Potentiometer (R2 and R10) The speed adjust potentiometers are found in Figure 4. Turning the wheel clockwise will slow down the input PWM duty cycle to the DRV8839 and the motor turns slower. Turn the wheel counter-clockwise and the motor will spin faster. R10 controls the motor connected across O2 and GND. R2 controls the motor connected across O1 and GND. Figure 4.
PAGE 5
Introduction www.ti.com 2.5 Motor Outputs Connect a DC motor across O1 and GND. If desired, connect an additional DC motor across O2 and GND. To reverse motor direction, connect the motor across O1 and VM or O2 and VM. 2.6 Operation of the EVM Use the following steps to operate the EVM: 1. Connect the included DC motor across O1 and GND. If desired, connect an additional DC motor across O2 and GND. 2. Adjust the potentiometer, R2, to minimum voltage by turning the wheel clockwise all the way.
PAGE 6
DRV8839 Schematic 3 www.ti.com DRV8839 Schematic Figure 5 shows the DRV8839EVM schematic.
PAGE 7
DRV8839 Bill of Materials www.ti.com 4 DRV8839 Bill of Materials Table 1 is the BOM for the DRV8839EVM. Table 1. DRV8839EVM Bill of Materials Item No. Qty. Designator Value DigiKey Part # Manufacturer MFG Part Number Description 1 1 C1 10uF 445-7645-1-ND TDK Corp. C2012X5R1C106M/0.85 CAP CER 10UF 16V 20% X5R 0805 2 3 C2, C3, C5 .1uF 490-3261-1-ND Murata Elec. GRM155R71C104KA88D CAP CER 0.
PAGE 8
EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods.
PAGE 9
FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
PAGE 10
【Important Notice for Users of this Product in Japan】】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
PAGE 11
EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
PAGE 12
EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods.
PAGE 13
FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
PAGE 14
【Important Notice for Users of this Product in Japan】】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
PAGE 15
EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
PAGE 16
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.