1, the difference between the l293d motor drive module and l298n is: the chip is different, the output current is different, and the optocoupler is different. Chip Different l293d motor drive module: The chip of the l293d motor drive module is a stepper motor drive chip.
2, the main body is different l293d: support Vcc 5~36V micro motor drive integrated circuit chip. l298n: is a double H-bridge motor driver chip. Supports different current l293d: supports Vcc 5~36V, the maximum output current is 1A.
3, L293D each channel peak output current up to 2A L298N operating voltage 8-46 V output current 2A Don't know what you want to drive? If you have two 130 motors, you can use the L293D.
4, the electrical machineryThe international advanced level has developed to the seventh generation. To this end, the domestic new energy vehicle manufacturers are not strongly willing to replace IGBT localization.
2, medium voltage IGBT module is generally used in new energy vehicles, industrial control, household appliances and other fields. High voltage IGBT modules are generally used in rail transit, new energy power generation, smart grid and other fields. In terms of electric vehicles, IGBT has become the biggest part of the electric vehicle drive system, and the cost has directly accounted for half of it.
3. Star Semiconductor (603290) is the leader of IGBT in China. Thanks to accelerated localizationThe global market share of IGBT modules is 2%. Jiaxing Star Semiconductor Co., Ltd. was established in April 2005, registered in Nanhu District, Jiaxing City, Zhejiang Province. 4, it is gratifying that at present, some domestic independent enterprises are accelerating the localization of IGBT, and the "shackle dilemma" is being broken. In April this year, the Changsha BYD IGBT project with a total investment of 1 billion yuan was officially started.
5, its special focus on the IGBT as the representative of the chip and device design and development and industrialization, power module industrialization.
If the central processing unit CPU is likened to the heart of the entire computer system, then the chipset on the motherboard is the torso of the entire body. For the motherboard, the chipset almost determines the function of the motherboard, which affects the performance of the entire computer system, and the chipset is the soul of the motherboard.
There are many special chips for stepper motors, and it is difficult to have a good and bad conclusion. But you want a wide range, should set a range of others to recommend.
According to the number of phases to distinguish, there are two phases, three phasesFive phases according to the drive mode to distinguish, there are two kinds of single-pole drive and bipolar drive, most of which are bipolar drive chips now commonly used, suitable for hybrid stepper motor drive.
1, you can use a dedicated DAC chip, GP8202 can achieve I2C output, 4-20mA output, very simple.
2, is generally the main control MCU, is generally dedicated to electric vehicle control, Huabang, NEC, PIC and so on have.
3, FT8215, GC4931F/S, XM2618 chip, etc.
1, v DC motor drive, current less than 3A can use l298N, current less than 43A can use BTS7960. The L298N chip is equipped with dual H-bridge motor drivers, each H-bridge can provide 2A current, the power supply voltage range is 5-48v in the power supply part, the logic part is 5v power supply, and accepts 5vTTL levels.
3, the most used H-bridge driver chip: L928N, this chip is very simple, very cheap, and easy to buy, a chip inside the integration of 2 H-bridge circuit, but also with PWM control and current acquisition.
4, the micro DC motor directly to the corresponding voltage is good, you can not drive. If you want to controlTo control its working state (rotation and non-rotation), a patch transistor can be used. Current is not enough, can consider MOS tube or Darlington tube.
5, safety: choose a DC motor driver with anti-reverse circuit, overcurrent, overvoltage protection and other safety functions to ensure that the system can operate safely. Cost-effective: Based on the above considerations, choose the right DC motor driver in a balance between performance and price.