Note: I am beginner.

I'm looking at motor drivers on this website

Various motor drivers have different specification for output configuration, i.e. :h-bridge, half bridge, quad half bridge and PWM. I know an h-bridge is used to reverse polarity to the motor, but what is different about a quad half bridge, dual half bridge or half-bridge.

I want to use 2 of these motors

  • \$\begingroup\$ (1) The website you refer to are motor driver ICs, not motor driver modules which are assembled version of those ICs. (2) The motors you wish to use have encoders, which are not usually for newbies. Are you sure you do want encoders? \$\endgroup\$
    – tlfong01
    May 23, 2021 at 14:23
  • \$\begingroup\$ There's 4, 2 or 1 of them. That's it. \$\endgroup\$
    – user16324
    May 23, 2021 at 14:33

1 Answer 1

  1. A half H-bridge can be used to switch on or off current passing a DC motor, but only in one direction.

  2. A full bridge is formed by two half bridges, and can be used to switch on or off of current passing through a motor (Note 1), in either direction.

  3. Some motor drivers eg, L298N, has two full bridges.

  4. Some motor drivers eg L293D, have four half bridges.

  5. Some motor drivers, eg BTS7960, have only one half bridge.

    1. to 4. above assumes a DC motor, which usually have only one coil. which can be driven by one full bridge.
  6. Stepping motors have two or more coils, and can be driven by two or more half bridges.


(1) How to use motor drivers with H-bridge and PWM input, to control direction and speed of DC motors? - EESE, Asked 2020jul16, Viewed 1k times


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