Shanghai, China, March 13, 2025- Toshiba Electronic Components and Storage Devices Co., Ltd. (“Toshiba”) announced today the mass production of a gate drive IC [1] – “TB9103FTG” – for automotive DC brushed motor applications. Its typical applications include latch motors [2] and locking motors [3] for electric rear doors and electric sliding doors, as well as drive motors for electric windows and electric seats.
Automotive components have now been largely electrified, and the demand for motors and the number of motors integrated into cars are increasing. With the increasing number of driver ICs used in electric motors, people are more inclined to adopt high integration and miniaturized system solutions. In addition, some motor applications do not require speed control and only require driver ICs with simple functions and performance.
TB9103FTG provides optimized gate drive IC functionality and performance for DC brushed motors that do not require speed control, paving the way for more compact designs. It has a built-in charge pump circuit [4] that ensures the voltage required to power the external MOSFET of the driving motor. In addition, it also has gate monitoring function, which can automatically control the timing of gate signal output for high and low side external MOSFETs to prevent the generation of through current. At the same time, the IC also has a built-in sleep function, which can reduce power consumption during standby.
This new IC can be used as both a single channel H-bridge and a dual channel half bridge. In addition to serving as a motor driver IC, it can also be combined with external MOSFETs to replace mechanical relays and other mechanical switches, which helps achieve quieter operation and higher equipment reliability.
Application circuit example of H-bridge mode
TB9103FTG is packaged in VQFN24 with a size of 4.0 mm × 4.0 mm (typical value), which helps to reduce device size.
The reference design for the control circuit of a car mounted DC brushed motor using TB9103FTG has been released on Toshiba’s website.
In the future, Toshiba will continue to expand its product line of automotive motor driver ICs, contributing to the electrification and safety improvement of automotive equipment.
Application:
Onboard equipment
-Drivers for latch motors and locking motors used for electric rear doors and electric sliding doors; Drivers for motors used in car windows and electric seats, etc
Characteristic:
-Simplified functionality and performance contribute to miniaturization
-Small Package
-Low standby power consumption (built-in sleep function)
-Can be used as a gate driver IC for single channel H-bridge or dual channel half bridge
-Compliant with AEC-Q100 (Grade 1) standard
Main specifications:
Note:
[1] Gate driver IC: A driver IC that drives MOSFETs.
[2] Latch motor: a motor used in the system to keep the car doors closed.
[3] Locking motor: a motor used in conjunction with a key in the system to lock and unlock car doors to prevent criminal activity.
[4] Charge pump circuit: a circuit that uses capacitors and switches to boost voltage.
