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Motor Drivers
Stepping motor driver IC series developed by ROHM, the industry leader
Stepping motor driver -- Topics -
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Features of ROHM's stepping motor drivers
Stepping motor drivers include the PM, HB, and VR types.
We provide both unipolar and bipolar drive circuits.
ROHM stepping motor driver ICs adopt low-energy DMOS output, high efficiency bipolar drive, and a PWM constant current control system, providing the optimal solution to virtually any application. A broad lineup is offered in different voltage resistances, output currents, and level of sophistication (simple to high performance).
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Hot Topics
Stepping motors are being increasingly used in robots, including industrial and individual robots for construction, manufacturing, and contests.
Stepping motors, DC motors, encoders, and multiple controllers are used in robot control to prevent loss of synchronization during acceleration, deceleration, stopping, and positioning.
ROHM’s stepping motor driver ICs are the ideal solution.
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Future Activities
ROHM is scheduled to participate in several conventions, including the Motor Technologies Convention, so that customers can experience ROHM’s renowned stepping motor driver ICs firsthand. |
Frequently Asked Questions
Recommended Stepping Motor Driver ICs
| Part No. |
Supply voltage
(V) |
Output current
(A) |
Circuit current
(mA) |
Input threshold voltage |
Output
ON resister
(Ω) |
Package |
RoHS |
| Vcc |
High level
voltage(V) |
Low level
voltage(V) |
| BD6385EFV |
10 to 28 |
1.5 |
4.5 |
2.0 |
0.8 |
1.0 |
HTSSOP-B40 |
Yes |
Although unipolar stepping motors have been the predominant type for many years, bipolar stepping motors have become increasingly popular in PPC devices and other applications.
In practice, conversion from unipolar to bipolar requires that a bipolar stepping motor be selected based on fundamentals of the motor drive and motor torque.
Another important consideration is the type of application. For example, for PPCs improved torque during high speed rotation, multiple protection functions, stable long-term operation, and sufficient heat dissipation are necessary requirements.
ROHM has built its reputation as the world leader in motor driver ICs by developing unipolar and bipolar motor drivers optimized for the PPC field as well as stepping motor drivers suitable for a wide variety of motors and conditions utilizing novel technologies.and expertise garnered from years of experience.
ROHM offers the BD6385EFV bipolar motor driver for replacement of unipolar motors in PPCs in Japan and throughout the world.
< Main Features >
･ DMOS stepping motor driver
･ Parallel interface/CLK-IN mode switching (patent pending)
･ Constant current PWM control (Intelligent PWM)
･ Current ripple smoothing mode
･ Built-in translator (2-phase/1-2 phase/W1-2 phase excitation)
･ Microstep drive minimizes motor vibration and resonance
･ Ripple current and regenerative current controller built-in
･ High-speed torque improvement mode
･ Built-in overcurrent protection circuit (OCP)
･ Shutdown circuit during low or excessive voltage (UVLO, OVLO)
･ Additional protection circuits (i.e. ghost supply prevention) built in
< Recommended Applications >
PPCs, robots, industrial equipment, scanners, LBP and MFP paper transports, carriages, finishers, photo printers, mini-printers, sewing machines, surveillance cameras, web cameras, thermal printers, serial dot matrix printers
Lineup
High performance, high reliability 36V voltage resistance stepping motor drivers for PPCs, robots, industrial equipment, and the like
| Part No. |
Supply
voltage
(V) |
Output current
(A) |
Circuit current
(mA) |
Input threshold voltage |
Output
ON resister
(Ω) |
Package |
RoHS |
| Vcc |
High level
voltage(V) |
Low level
voltage(V) |
NEW
BD6387EFV |
10 to 28 |
2.0 |
4.5 |
2.0 |
0.8 |
0.8 |
HTSSOP-B40 |
Yes |
NEW
BD6385EFV |
10 to 28 |
1.5 |
4.5 |
2.0 |
0.8 |
1.0 |
HTSSOP-B40 |
Yes |
NEW
BD6383EFV |
10 to 28 |
1.0 |
4.5 |
2.0 |
0.8 |
1.5 |
HTSSOP-B40 |
Yes |
NEW
BD6389FM |
10 to 28 |
2.2 |
4.5 |
2.0 |
0.8 |
0.7 |
HSOP-M36 |
Yes |
| ☆BD6388FM |
10 to 28 |
1.8 |
4.5 |
2.0 |
0.8 |
0.9 |
HSOP-M36 |
Yes |
☆: Under development
* The BD6387EFV, BD6385EFV, BD6383EFV, BD6389FM, and BD6388FM are all function-compatible.
** The BD6387EFV, BD6385EFV, and BD6383EFV are pin-compatible.
*** The BD6389FM and BD6388FM are pin-compatible.
36V voltage resistance stepping motors for paper transport, paper feed or carriage use
| Part No. |
Supply
voltage
(V) |
Output current (A) |
Circuit current (mA) |
Input threshold voltage |
Output
ON resister
(Ω) |
Package |
RoHS |
| Vcc |
VM |
High level voltage (V) |
Low level voltage (V) |
| BD6384EFV |
3.0 to 5.5 |
16 to 28 |
1.5 |
5.0 |
2.0 |
0.8 |
1.2 |
HTSSOP-B40 |
Yes |
Simple 36V voltage resistance stepping motor drivers for LBPs, MFPs, photo printers, and others
| Part No. |
Supply
voltage
(V) |
Output
current
(A) |
Circuit current
(mA) |
Input threshold voltage |
Output
ON resister
(Ω) |
Package |
RoHS |
| Vcc |
High level
voltage(V) |
Low level
voltage(V) |
NEW
BD6395FP |
16 to 28 |
1.5 |
3.0 |
2.0 |
0.8 |
1.0 |
HSOP25 |
Yes |
NEW
BD6393FP |
16 to 28 |
1.2 |
3.0 |
2.0 |
0.8 |
1.5 |
HSOP25 |
Yes |
NEW
BD6290EFV |
19 to 28 |
0.8 |
3.0 |
2.0 |
0.8 |
2.8 |
HTSSOP-B24 |
Yes |
Low voltage stepping motor drivers for miniprinters, handheld printers, and web cameras
| Part No. |
Supply voltage (V) |
Output current (A) |
Circuit current (mA) |
Input threshold voltage |
Output
ON resister
(Ω) |
Package |
RoHS |
| Vcc |
VM |
High level voltage (V) |
Low level voltage (V) |
NEW
BD6381EFV |
2.5 to 5.5 |
6.0 to 13.5 |
1.2 |
1.6 |
2.0 |
0.8 |
1.0 |
HTSSOP-B24 |
Yes |
NEW
BD6380EFV |
2.5 to 5.5 |
4.0 to 13.5 |
0.8 |
1.6 |
2.0 |
0.8 |
1.2 |
HTSSOP-B24 |
Yes |
High voltage 45V voltage resistance stepping motor drivers
| Part No. |
Supply
voltage
(V) |
Output
current
(A) |
Circuit current
(mA) |
Input threshold voltage |
Output
ON resister
(Ω) |
Package |
RoHS |
| Vcc |
High level
voltage(V) |
Low level
voltage(V) |
| ☆BD6427EFV |
19 to 42 |
2.0 |
2.0 |
2.0 |
0.8 |
0.8 |
HTSSOP-B40 |
Yes |
| ☆BD6425EFV |
19 to 42 |
1.5 |
2.0 |
2.0 |
0.8 |
1.2 |
HTSSOP-B40 |
Yes |
NEW
BD6423EFV |
19 to 42 |
1.0 |
2.0 |
2.0 |
0.8 |
2.0 |
HTSSOP-B24 |
Yes |
| ☆BD6426EFV |
19 to 42 |
2.0 |
2.0 |
2.0 |
0.8 |
0.8 |
HTSSOP-B40 |
Yes |
| ☆BD6424EFV |
19 to 42 |
1.5 |
2.0 |
2.0 |
0.8 |
1.2 |
HTSSOP-B40 |
Yes |
| ☆BD6422EFV |
19 to 42 |
1.0 |
2.0 |
2.0 |
0.8 |
2.0 |
HTSSOP-B24 |
Yes |
☆: Under development
* The BD6427EFV,BD6425EFV are pin-compatible,function-compatible.
** The BD6426EFV,BD6424EFV are pin-compatible,function-compatible.
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