The design offers seamless configuration switching, advanced safety features, and easy integration. Find more!
Automotive brushed DC motor control plays a critical role in modern vehicles, enabling efficient and reliable operation of systems such as power windows, adjustable seats, sliding doors, and powered tailgates. These motors provide a cost-effective and compact solution for automating essential vehicle functions, enhancing comfort and convenience for users. Advanced motor control systems also ensure energy efficiency, safety, and durability through features like fault detection and protection mechanisms. Brushed DC motors are widely utilized in modern automobiles for actuators controlling doors, windows, seats, and other systems. Toshiba’s automotive 2-channel half-bridge gate driver IC, the TB9103FTG, offers advanced features for efficient motor control.
This reference design allows engineers to explore two motor control configurations: driving two motors in half-bridge mode or a single motor in H-bridge mode. Key features such as dead time control, integrated fault detection, and fault indication outputs ensure reliable motor operation with added safety and durability. The design also supports a broad input voltage range, making it adaptable to various automotive systems.
This design simplifies the evaluation and testing of the TB9103FTG’s capabilities. It allows motor control through manual adjustment via onboard switches or external control via a microcontroller (MCU). The design also supports testing with two power MOSFETs for motor driving: the XPN7R104NC and the XPH3R304PS. Additionally, the design includes a reverse connection protection circuit using the XPH1R104PS power MOSFET, safeguarding the circuit against incorrect power supply polarity.
A voltage regulator IC is integrated to generate a stable 5V power supply, supporting the design and powering an external MCU. The TB9005FNG further enhances system reliability with low-voltage reset, power-on reset, and a watchdog timer, ensuring optimal MCU performance.
The automotive brushed DC motor control circuit supports half-bridge and H-bridge operation modes, making it versatile for various applications such as controlling doors, windows, and other automotive systems. Compact in size, the board measures 75 mm x 75 mm, ensuring easy integration into automotive designs.
The TB9103FTG is a 2-channel half-bridge gate driver designed for automotive applications, which can also function as a 1-channel H-bridge gate driver. It features a low-power sleep mode and incorporates advanced fault-detection functions. Upon detecting a fault, the device disables the gate drive and signals the fault through its DIAG terminals.
When paired with an N-channel MOSFET, the TB9103FTG is suitable for latching motor applications, including sliding and back doors, and drive motor applications for seats and windows commonly found in automobiles. Additionally, it is well-suited for transitioning motor control systems from mechanical relays to semiconductor-based solutions.
This reference design offers a comprehensive and cost-effective solution for engineers seeking to develop reliable, energy-efficient automotive motor control systems that meet the demands of modern vehicle automation.
Toshiba has tested this reference design. It comes with a bill of materials (BOM), schematics, assembly drawing, printed circuit board (PCB) layout, and more. The company’s website has additional data about the reference design. To read more about this reference design, click here.
