洋天科技洋天科技
公司簡介訂購方式匯款確認檔案下載 聯絡我們保固說明訂單查詢討論區
電子郵件:

密碼:

忘記密碼
加入會員
  首頁 | 原廠 Arduino® | 特殊服務設計 | 轉接座及轉接板/麵包板 | 開發板/燒錄器/模擬器 | 相容 For Arudino® 週邊及配件 | OKdo系列 | Saleae 系列 | Adafruit 系列 | ArduCam 系列 | Camera 攝像頭 | ROCK 系列 | Debix系列開發板 | Raspberry Pi 樹莓派 | Banana Pi 香蕉派 | BeagleBone 狗骨頭 | M5Stack系列 | Micro:bit (BBC)系列 | NVIDIA Jetson Nano系列 | Pololu 系列 | Pycom 系列 | Seeed 系列 | Sparkfun 系列 | WeMos 系列 | 傳感器 | Cubieboard/CubieTruck系列 | Firefly 系列 | Microduino系列 | Orange Pi 香橙派 | PCB板 | PLC 系列 | Robot 機器人 | UDOO 系列 | RedBearLab 系列 | LattePanda系列 | LittleBits 系列 | Libelium 系列 | Luxonis 相機系列 | PCduino | RobotElectronics 系列 | MageDok 顯示屏 | LCD/LCM/TFT/LVDC | Dimension Engineer 系列 | 通訊模組 | 影音器材(含轉換器) | 線材/連結器/轉換器 | 測量儀器 | 馬達/馬逹控制器/電源模組 | 其他 | 焊接/維修工具 | IC零件 | LED燈-裝飾燈 | 工作站迷你電腦 mini PC | 擴大器 | 雕刻機 | 電池 | 電腦周邊 | 檢定考套件 | 停售商品
  首頁 » 商品目錄 » Pololu 系列 » Motion Control Modules » 43326229
商品搜尋 進階
 |  購物車內容  |  結帳   
商品分類
  DRVXXXX系列
  Electronics
  G2 High-Power Motor Drivers
  Mechanical Components
  Motion Control Modules
    RC Servo Controllers
  Robot Kits
  Sensors
Arduino
Pololu
Seeed
Sparkfun
robot-electronics
dimensionengineering
libelium
adafruit
udoo
redbearlab
Arducam
goembed
Saleae
okdo
服務台
公司簡介
退換貨服務
訂購方式
聯絡我們
匯款確認
[<< 前一頁]  瀏覽相同分類產品 12 / 27  [下一頁 >>]
●(現貨*) MC33926 Motor Driver Carrier (PI1212)
NT$1,136
運費NT$50
條碼43326229
產品說明

※本產品原廠代理從國外進口,有些交期較長,下訂前請詢問!

  

This breakout board for Freescale’s MC33926 full H-bridge has an operating range of 5 – 28 V and can deliver almost 3 A continuously (5 A peak) to a DC motor. The MC33926 works with 3 – 5 V logic levels, supports ultrasonic (up to 20 kHz) PWM, and features current feedback, under-voltage protection, over-current protection, and over-temperature protection.

Overview

The MC33926 motor driver carrier can supply up to almost 3 A continuous current to a single brushed DC motor at 5 – 28 V, and it can tolerate peak currents up to 5 A for a few seconds, making this a great general-purpose motor driver for medium-sized DC motors. The MC33926 supports ultrasonic (up to 20 kHz) pulse width modulation (PWM) of the motor output voltage, which eliminates the audible switching sounds caused by PWM speed control, and a current feedback circuit outputs an analog voltage on the FB pin that is proportional to the output current. Since this board is a carrier for the Freescale Semiconductor MC33926 H-bridge, we recommend careful reading of the MC33926 datasheet (1MB pdf).

If you have two motors to control, please consider the Dual MC33926 motor driver carrier.

Pinout

 

The default states of many of the MC33926 logic input pins requires that many external connections be made to use this motor driver. To reduce the number of necessary external connections, the board has five default-overriding jumpers. All of the default-overriding jumpers are tied to VDD, except the D1 jumper, which is tied to GND. All VDD jumper pads are circles; the ground jumper pad is square.

PIN Default State Description
VIN HIGH This is the main 5 – 28 V motor power supply connection, which should typically be made to the larger VIN pad. Operation from 5 – 8 V reduces maximum current output; the device is also protected for transients up to 40 V. The smaller VIN pad can be used to distribute the VIN node to the rest of the application circuit; for lower-current applications, the pin can also be used to power the motor driver and motor.
GND LOW Ground connection for logic and motor power supplies.
OUT2 HIGH The motor output pin controlled by IN2.
OUT1 HIGH The motor output pin controlled by IN1.
VDD HIGH 3-5 V logic supply connection. This pin is used only for the SF pull-up and default-overriding jumpers; in the rare case where none of those features is used, VDD can be left disconnected.
IN2 HIGH The logic input control of OUT2. PWM can be applied to this pin (typically done with both disable lines inactive).
IN1 HIGH The logic input control of OUT1. PWM can be applied to this pin (typically done with both disable lines inactive).
PWM / D2 LOW Inverted disable input: when D2 is low, OUT1 and OUT2 are set to high impedance. A D2 PWM duty cycle of 70% gives a motor duty cycle of 70%. Typically, only one of the two disable pins is used, but the default is for both disable pins to be active.
PWM / D1 HIGH Disable input: when D1 is high, OUT1 and OUT2 are set to high impedance. A D1 PWM duty cycle of 70% gives a motor duty cycle of 30%. Typically, only one of the two disable pins is used, but the default is for both disable pins to be active.
SF HIGH Status flag output: an over-current (short circuit) or over-temperature event will cause SF to be latched LOW. If either of the disable pins (D1 or D2) are disabling the outputs, SF will also be LOW. Otherwise, this pin is weakly pulled high. This allows the SF pins of multiple units to connected to a single input.
FB LOW The FB output provides analog current-sense feedback of approximately 525 mV per amp.
EN LOW Enable input: when EN is LOW, the chip is in a low-current sleep mode.
SLEW LOW Output slew rate selection input. A logical LOW results in a slow output rise time (1.5 μs – 6 μs). A logical HIGH selects a fast output rise time (0.2 μs – 1.45 μs). This pin should be set HIGH for high-frequency (over 10 kHz) PWM.
INV LOW A logical high value inverts the meaning of IN1 and IN2. This allows INV to function as a direction line if IN1 and IN2 are set to different values.

Basic Application Connections

In a typical application, five I/O lines are used to connect the motor driver to a microcontroller: the two input lines, IN1 and IN2, for direction control, one of the disable lines, D1 or D2, for PWM speed control, the status flag, SF, for monitoring motor driver errors, and the current sense output, FB, for monitoring motor current draw (connected to an analog-to-digital converter input). The control lines can be reduced to two pins if PWM signals are applied directly to the two input pins with both disable pins held inactive. A two-pin interface can also be achieved using one of the disable lines for PWM speed control and the INV input for direction control with IN1 and IN2 held at different values (i.e. one set HIGH and the other set LOW). In each of these cases, the other unused lines must be set to enable proper operation. For example, if D2 is used for the PWM input (as is typically the case), D1 must be held low to prevent it from disabling the motor driver. The circuit board provides convenient jumper points for overriding the motor driver defaults without having to connect extra wires to the module.

The current sense and status flag connections are optional, though monitoring of the status flag can allow detection of latched fault conditions. The status flag is an open-drain output, so multiple units can have their status flag pins wired together for applications where I/O pins are scarce and determining which motor driver is experiencing a fault condition is not necessary.

Note that the default state of the enable pin, EN, is LOW, which holds the chip in a low-current sleep mode. You will need to hold this pin high (either with an external connection or via the default-overriding jumper next to the pin) to allow the chip to run.

Protection

The MC33926 has under-voltage, over-current, and over-temperature protection. Some protection events are indicated by the status flag pin (SF), which is an active-low pin allowing the SF pin from multiple boards to connected to a single input. If the chip detects an over-current or over-termperature event, the SF is latched LOW and OUT1 and OUT2 are set to high-impedance. To unlatch the status flag pin toggle the D1, D2 , EN or VIN lines. The carrier board has a reverse-protection MOSFET for added protection to the motor driver chip.

Real-World Power Dissipation Considerations

The MC33926 motor driver used on the carrier board has a maximum current rating of 5 A continuous. However, the chip by itself will overheat at lower currents. For example, in our tests at room temperature with no forced air flow, the chip was able to deliver 5 A for 5 s and 4 A for 18 s before the chip’s thermal protection started reducing the current. A continuous current of 3 A was right at the over-temperature threshold; in some tests the thermal protection kicked in after a minute, and in other tests the chip delivered 3 A for over five minutes without triggering thermal protection. The actual current you can deliver will depend on how well you can keep the motor driver cool. The carrier’s printed circuit board is designed to draw heat out of the motor driver chip, but performance can be improved by adding a heat sink. Our tests were conducted at 100% duty cycle; PWMing the motor will introduce additional heating proportional to the frequency.

This product can get hot enough to burn you long before the chip overheats. Take care when handling this product and other components connected to it.

Unlike other H-Bridges, the 33926 has a feature that allows it to gracefully reduce current as the current exceeds 5 A or as the chip temperature approaches its limit. This means that if you push the chip close to its limit, you will see less power to the motor, but it might allow you to avoid a complete shutdown.

A 20-pin straight breakaway male header is included with the MC33926 carrier board, which can be used to connect the PCB to perfboards or breadboards. The board also includes two 2-pin 3.5mm terminal blocks for making simple motor connections.

Schematic Diagram

問與答

目前沒有任何商品問答!
本商品上架日期:2013-05-24.
評價
購物車 更多
空的...
查詢訂單狀態
 
請輸入您的訂單編號
商品通知狀態 更多
通知●(現貨*) MC33926 Motor Driver Carrier (PI1212)
更新時通知我
推薦給朋友
 
推薦這個商品給朋友

聯絡方式:手機:0933807110 或 0968222607
E-mail:i0104@ms13.hinet.net(主要信箱) & i03070309@yahoo.com.tw(次要) & a_te0307@hotmail.com & A9215017@mail.ntust.edu.tw & r94922042@ntu.edu.tw