Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has begun offering engineering samples of the TB9104FTG, a gate driver designed for bridge circuits in high-current automotive brushed DC motors. This driver is ideal for body system applications such as power back doors, sliding doors, windows, and seats.
As vehicles increasingly rely on electrified movable components, the number of motors—and corresponding drivers—has grown, creating demand for smaller, more efficient systems that reduce wiring harnesses and vehicle weight.
The TB9104FTG comes in a compact VQFN32 package (5.0 × 5.0 mm) with an exposed thermal pad for improved heat dissipation. When paired with external MOSFETs, it enables a space-saving drive circuit for high-current brushed DC motors.
For microcontroller interfacing, the driver includes a Serial Peripheral Interface (SPI), allowing configuration, status monitoring, and motor control commands via SPI or dedicated pins. Multiple TB9104FTG devices can share the SPI bus, helping reduce wiring complexity.
The device also integrates a PWM drive circuit, enabling continuous motor operation with a single rotation command, which reduces microcontroller workload and SPI bus congestion.
Safety is a key feature: a high-precision current sense amplifier monitors motor current, allowing the microcontroller to halt operation if abnormal currents occur. Additional built-in protections include detection for low supply voltage, overvoltage in the charge pump, overheating, MOSFET VDS errors, and SPI errors.
Toshiba plans to expand its automotive motor driver lineup, supporting further vehicle electrification and enhanced system safety.
Key Features:
- Compact VQFN32 package with high heat dissipation
- SPI interface for configuration and motor control
- Built-in PWM drive for continuous operation
- Multiple abnormality detection and protection functions
Applications: Automotive body systems such as power back doors, sliding doors, windows, and seats.
Specifications:
- Supported motor: Brushed DC
- Output channels: 1 (H-bridge) / 2 (half-bridge)
- Main functions: Standby, dead time control, PWM drive
- Operating range: -40°C to 125°C ambient, 4.5–18V supply
- Package: P-VQFN32 (5 × 5 mm)
- Reliability: AEC-Q100 Grade 1 (planned)
Main Specifications
| Part number | TB9104FTG | ||
| Supported motors | Brushed DC motor | ||
| Number of output channels | One channel (when used as H-bridge)/two channels (when used as half-bridge) | ||
| Main functions | Standby function, dead time control, PWM drive | ||
| Main abnormal detections | Power supply low voltage detections, charge pump overvoltage detection, overheat detection, VDS detection of external MOSFETs, SPI error detection | ||
| Absolute maximum ratings(Ta=-40 to 125°C) | Power supply VB voltage 1 Vvb1a (V) | -0.3 to 18 | |
| Power supply VB voltage 2 Vvb2a (V) | 18 to 40 (within one second) | ||
| Power supply VCC voltage Vvcc1a (V) | -0.3 to 6.0 | ||
| Power supply VDD voltage Vvdd1a (V) | -0.3 to 6.0 | ||
| Ambient temperature Ta (°C) | -40 to 125 | ||
| Operating ranges(Ta=-40 to 125°C) | Operating power supply voltage1 VvbRNG (V) | 5.7 to 18 | |
| Operating power supply voltage2 VvccRNG (V) | 4.5 to 5.5 | ||
| Operating power supply voltage3 VvddRNG (V) | 4.5 to 5.5 | ||
| Operating junction temperature TjRNG (°C) | -40 to 150 | ||
| Package | Name | P-VQFN32-0505-0.50-009 | |
| Size (mm) | Typ. | 5.0×5.0 | |
| Reliability | AEC-Q100 (Grade 1) qualified (scheduled) | ||
