KAWASAKI, Japan, Mar 13, 2025 – Toshiba has started mass production of TB9103FTG, a gate driver IC[1] for automotive brushed DC motors, including the latch motors[2] and lock motors[3] of power backdoors and power slide doors, and the drive motors of power windows and power seats.
The shift from manually adjusted automotive components to electrified systems has led to a growing demand for electric motors and an increased number of integrated units in vehicles. It resulted in more requirements for motor drivers, prompting moves to downsize and enhance integration. Additionally, some motor applications do not need speed control and require drivers with basic functions designed for these specific automotive uses.
TB9103FTG offers gate driver functions and performance for brushed DC motors that do not require speed-control, opening the way to compact designs. It has a built-in charge pump circuit[4] that ensures voltage needed to power external MOSFETs for driving motors. It also has a gate monitoring function that prevents the generation of through-current by automatic control of the output timing of the gate signal to the high-side and low-side external MOSFETs. In addition, it has a sleep function, achieving low power consumption during standby.
The new IC can function as a single-channel H-bridge or two-channel half-bridge. Besides being used as a motor driver, it can work with an external MOSFET to replace mechanical relays and switches, leading to soundless operation and improved reliability in automotive systems.
TB9103FTG is housed in a 4.0×4.0mm (typ.) VQFN24 package and contributes to equipment downsizing. A reference design for an “Automotive Brushed DC Motor Control Circuit Using TB9103FTG” is available on Toshiba’s website.
Toshiba will continue to expand its lineup of automotive motor drivers, contributing to the electrification and the safety of automotive equipment.
Applications
Automotive equipment
- Driver for latch motors and lock motors used in power backdoor and power slide doors, and for motors for windows, power seats, etc.
Features
- Minimized functions and performance that support downsizing
- Small package
- Low-power standby with built-in sleep function
- Can operate as a gate driver for one-channel H-bridge or two-channel half-bridges
- AEC-Q100 (Grade 1) qualified
Notes:
[1] A gate driver IC: A driver to drive MOSFETs.
[2] Latch motors: Motors used in systems to hold a door closed
[3] Lock motors: Motors used in systems that lock and unlock doors in conjunction with key operations to prevent crime.
[4] Charge pump circuit: A circuit that uses a capacitor and switches to increase voltage.
Source: Toshiba
About Toshiba Electronic Devices & Storage Corporation (Toshiba)
Toshiba Corporation, established in 1875, is a Japanese multinational conglomerate headquartered in Tokyo, Japan. Over its extensive history, Toshiba has diversified its offerings across sectors, including Electronics and Electrical Equipment, Information Technology and Communications, Electronic Components and Materials, Energy Systems, and Industrial and Social Infrastructure. As of March 31, 2024, Toshiba Corporation reported consolidated net sales of ¥3,285.8 billion. The company employed approximately 105,331 individuals globally. Toshiba’s organizational structure includes 240 consolidated subsidiaries. The company operates through a network of approximately 300 subsidiaries worldwide, with 20+ located in Europe. Manufacturing is conducted across 25 facilities in Japan and 40+ overseas, including locations in China, Indonesia, the United States, and Thailand, with four sites in Europe. Toshiba’s longstanding presence and diverse portfolio underscore its significant role in the global technology and electronics industries.