KAWASAKI, Japan, March 13, 2025 –Toshiba Electronic Devices & Storage Corporation (“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.
Formerly manually adjusted parts of automobiles are now largely electrified, which has increased both the demand for electric motors and the number integrated into vehicles. The number of drivers used in motors has also increased, prompting moves to downsize and integrate overall systems. There are also some motor applications that do not require rotational speed control, and drivers with simple functions and performance are required for these applications.
TB9103FTG offers streamlined gate driver functions and performance for brushed DC motors that do not require speed-control, opening the way to more compact design. 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 also be used as one-channel H-bridge or two-channel half-bridges. In addition to application as a motor driver, it can be combined with an external MOSFET to replace mechanical relays and other mechanical switches, contributing to quieter operation and higher equipment reliability.
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 now available on Toshiba’s website.
Toshiba will continue to expand its lineup of automotive motor drivers, contributing to the electrification and the improved safety of automotive equipment.
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.
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
Main Specifications