TOKYO — (BUSINESS WIRE) — October 12, 2017 — Toshiba Electronic Devices & Storage Corporation has launched “TB9120FTG,” a constant-current 2-phase stepping motor driver for automotive applications. The new IC outputs a sine-wave in electric current using only a simple clock input interface, with no need for an advanced functional MCU or dedicated software. Sample shipments start in November, with mass production scheduled to start in July 2019.
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Toshiba Electronic Devices & Storage Corporation: A constant-current 2-phase stepping motor driver "TB9120FTG" for automotive applications. (Photo: Business Wire)
TB9120FTG incorporates DMOS FETs with low on-resistance (upper + lower = 0.7Ω (typ.)), which achieve a maximum current of 1.5A. Both the DMOS FETs and the controller that generates micro-stepping sine-waves (supporting up to 1/32 steps) are housed in a small QFN type package (6.0 mm x 6.0 mm). The new IC delivers an operating temperature range of -40 to 125℃, and it will be qualified against AEC-Q100, a certified standard for electronic components for automotive applications. It is suited to a wide range of general uses, including adjusting the projection of heads-up displays and various valve controllers.
Main Features of New Product
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Simple clock input interface
- Advanced functional MCU or software are not required to output sine-waves.
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Micro step drive, supporting up to 1/32 steps.
- Less motor noise
- Smoother and more precise control
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Stall[1] detection circuit
- A detection signal is output from a dedicated pin after detecting a stall.
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Constant-current PWM control
- Mixed decay mode ensures stable current flow through the motor.
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Built-in error detections with a warning signal output function
- Thermal shutdown, over-current detection, and load open detection
Main Applications
- Mirror adjustment for the projection position of heads-up displays
- Control of various valves
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Main Specifications |
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| Part number | TB9120FTG | |
| Driving method | Constant-current PWM control | |
| Stepping mode | Micro step drive, supporting up to 1/32 steps | |
| Number of drive motors | Single 2-phase stepping motor | |
| On resistance |
Upper + Lower = 0.7 Ω (typ.) at 25 ℃ |
|
| Output current | 1.5 A (absolute maximum rating) | |
| Error detections |
Stall detection, thermal shutdown, over-current
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| Operating voltage range | 7V to 18V (absolute maximum rating = 40V) | |
| External power supply | Single power supply | |
| Operating temperature range |
-40 to 125℃ |
|
| Package |
P-VQFN28-0606-0.65
6.0mm x 6.0mm Wettable pins with excellent solderability |
|
| Reliability | Qualified based on AEC-Q100 | |
| Sample shipment | November 2017 | |
| Mass production | July 2019 (scheduled) | |
