What are the stepper motor drive chips?
Stepper motor drive chip model:
1. L6258EX Manufactured by STMicroelectronics, the chip is relatively old, with a maximum of 16 segments. Control interface: parallel port. 
L6258EX chip
Advantages: large driving current. Disadvantages: the chip is old, there is a possibility of discontinuation; The circuit is slightly more complex; Program control is slightly more complicated.
2. A4988 ALLEGRO company, this company is still famous for stepping motor driver IC, mostly small packages, such as QFN/LQFP; In small instruments, power requirements are not much to use.
3、DRV8825
L6258EX ST driver IC - stepper motor driver chip
Texas Instruments (TI) company, analog device overlord, motor series (stepper motor, brushed motor, brushless motor, etc.) chip is many, still good. The overall performance of the DRV8825 is similar to that of the A4988, with subdivisions supporting 2, 4, 8, 16, and 32 subdivisions. It may be related to wiring or program control, the noise is very large, and the latter product is not used.
4、TMC246/TMC249
TRINAMIC company, German company, specializing in motor drive chips, German things are really good. 246 is a built-in MOS tube, 249 external MOS tube, the two control programs are fully compatible, but the circuit difference is relatively large. Where the requirements are high, you can consider, the price is more expensive, the same kind of driver chip is the highest, of course, the performance is basic, as for whether it is good or not, who uses who knows!
L6258EX ST driver IC
Control interface: SPI
Advantages: simple circuit; Simple program control; High efficiency is very high, 246 built-in MOS tube, small calorific value; 249 external MOS tube can drive high-current motor; Low noise, smooth movement.
Disadvantages: expensive; The wiring requirements are high, and the hardware engineers design 4-layer boards;
5、TMC260/TMC2660/TMC262
Produced by TRINAMIC company, the company's new series of models, all aspects of performance have been improved, such as larger drive current, higher subdivision, maximum support of 256 subdivisions (but such a high subdivision is of little significance in ordinary occasions) and so on. If you use TMC series, it is recommended to use TMC2660. The price is relatively cheap; TMC262 for high-power use This external MOS tube is fully compatible with the control program.
Control interface: step/direction and SPI, you can use SPI only, and the relevant configuration parameters can only use SPI. The contemptible way to use it is to control the motor with STEP/DIRECTION and the SPI bus for parameter configuration.
Stepper motor driver chip manufacturer
6、L6470
ST's new ST product.
I have not used it, colleagues have used it for testing, from the manual, relatively powerful, large current (peak current 7A), built-in speed curve, hardware origin, etc., interested can be tested.