50V/3.0A Stepping Motor Driver without Current Sensing Resistors
Product News 2024-11
Toshiba Electronic Devices & Storage Corporation ("Toshiba") has added a new product, “TB67S559FTG“ to its lineup of stepping motor driver IC series that support constant current control, for OA equipment and industrial equipment (robots, financial equipment, etc.) The new driver carries out constant current motor control without current sensing resistors. It is voltage/current ratings upgraded product and is compatible with pin/function of TB67S539FTG.
TB67S559FTG delivers a motor output voltage rating of 50V and a motor output current rating of 3.0A[1] by using Toshiba’s latest[2] DMOSFET device.
Low on-resistance (upper + lower) between the output transistor drain and source, 0.4Ω (typ.), reduces heat. (Toshiba’s existing product, TB67S539FTG 0.8Ω (typ.))
Similar to TB67S539FTG, this product eliminates the need for external current sensing resistors by built-in a current detection part that is used for constant-current motor control.
The H-bridge circuit for motor control has an Nch/Nch configuration[3], and a built-in charge pump circuit for output stage control. Nch/Nch configuration generally requires an external capacitor for the charge pump, but the new product incorporates the external capacitor for the charge pump, eliminating the need for external components. This contributes to the reduction of external components and the space saving of the mounting area.
The package uses the same small P-VQFN32-0505-0.5 package as TB67S539FTG. In addition, pin/function compatibility makes it easy to replace from TB67S539FTG to TB67S559FTG without having to change the board when low heat and upgraded ratings are required.
It also supports 8.2V to 44V power supply for motor drive and can be used in a wide range of applications that require 12V drive and 36V drive as well as 24V drive applications.
Notes:
[1] Actual driven motor current depends on the use environment and such factors as ambient temperature and power supply voltage.
[2] As of 6th November 2024
[3] Output-stage configuration that uses N-channel MOSFETs in both the upper and lower stages (although it is common for the upper stage to use P-channel MOSFET and the lower stage to use N-channel MOSFET)
Applications
- OA equipment, industrial equipment (robotics, financial equipment, etc.), POS terminals, vending machines, cameras, washing machines, sewing machines, projectors, faucets equipment
Features
- Easy to replace from TB67S539FTG to TB67S559FTG without having to change the board when low heat and upgraded ratings are required.
- Small package (V-QFN32-0505-0.5)
- Low on-resistance (upper + lower) between the output transistor drain and source and reduced heat: Ron=0.4Ω (typ.)
- No need for current sensing resistors
- No need for an external capacitor for the charge pump circuit internally
- Low power consumption in sleep mode: IM1=1μA (max) (sleep mode)
Main Specifications
(Unless otherwise specified, Ta=25°C, VM=24V)
Part number |
TB67S539FTG[4] |
|||
|---|---|---|---|---|
Supported motors |
2-phase bipolar stepping motor |
|||
Absolute maximum ratings |
Motor output voltage VOUT (V) |
50 |
40 |
|
Motor output current IOUT (A) |
3.0 |
2.0 |
||
Operating ranges |
Motor power supply VM (V) |
Ta=-20 to 85°C |
8.2 to 44 |
4.5 to 33 |
Output transistor between drain and source On resistance (upper + lower) RON(D-S) typ. (Ω) |
VM=24V, Tj=25°C, IOUT=2.0A |
0.4 |
0.8 |
|
Power consumption IM1 max (μA) |
Sleep mode |
1 |
1 |
|
Interface |
Clock |
|||
Step mode |
Full step to 1/32 step modes |
|||
Current detection method |
No external resistor |
|||
Capacitor for charge pump |
Not required |
|||
Torque setting function |
Switchable set current without external components (100%/75%/50%/25%) |
|||
Decay setting function |
Selectable (Mixed/Slow/Fast/ADMD[5]) |
|||
Safety function |
Over-current detection, thermal shutdown, under voltage lockout |
|||
Package |
Name |
P-VQFN32-0505-0.50 |
||
Size Typ. (mm) |
5.0×5.0 |
|||
Notes:
[4] Conventional products
[5] Abbreviation of Advanced Dynamic Mixed Decay, Toshiba's original technique for improving wave form qualities at high speed.
* Company names, product names, and service names may be trademarks of their respective companies.
* Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.