company blog about Infineon BTN7975B High Current PN Half Bridge Motor Drive

Infineon BTN7975B High Current PN Half Bridge Motor Drive

Shenzhen Mingjiada Electronics Co., Ltd., as a professional supplier of electronic components, has been consistently supplying BTN7975B high-performance half-bridge driver. BTN7975B, with its exceptional current drive capability and high integration design, is an ideal choice for industrial control, automotive electronics, and consumer electronics applications.

Product Overview

BTN7975B is an integrated high-current half-bridge driver specifically designed for motor drive applications. BTN7975B belongs to the NovalithIC™ series, which includes a p-channel high-side MOSFET and an n-channel low-side MOSFET, along with an integrated driver IC, all housed in a single package. By using a p-channel high-side switch, BTN7975B eliminates the need for a charge pump, thereby minimising EMI. With the integrated driver IC, interfacing with a microcontroller is simplified. The BTN7975B driver IC features logic-level inputs, status flag diagnostics, rise time adjustment, dead time generation, and protection against over-temperature, over-voltage, under-voltage, over-current, and short-circuit conditions.

BTN7975B offers a cost-optimised solution for protected high-current PWM motor drivers while occupying minimal board space.

Core Technical Features

High-current drive capability: BTN7975B supports peak output currents of up to 70A, easily handling high-current transient demands such as motor startup, while featuring low on-resistance to effectively reduce power loss and enhance overall system efficiency.

Comprehensive protection features: BTN7975B chip incorporates multiple protection mechanisms, including over-temperature protection, overcurrent protection, and short-circuit protection, ensuring safe operation under various abnormal conditions. Its unique diagnostic feedback function enables real-time monitoring of chip status, facilitating predictive maintenance for the system.

High-efficiency design: BTN7975B utilises Infineon's advanced MOSFET technology to significantly reduce static and dynamic power consumption. It supports PWM control input to optimise energy efficiency, making it particularly suitable for motor control applications requiring precise speed regulation.

Wide temperature operating range: With a wide operating temperature range of -40°C to +150°C, the BTN7975B can withstand the harsh temperature conditions found in industrial environments and automotive electronics. The product complies with the AEC-Q100 automotive electronics standard, meeting the reliability requirements for automotive-grade applications.

Core Product Advantages

Highly Integrated Design:BTN7975B integrates the power MOSFET and driver circuitry into a single package, significantly reducing the number of external components, simplifying PCB layout design, and lowering overall system costs. This integrated design is particularly suitable for space-constrained applications.

Easy system integration: BTN7975B chip supports direct PWM input and is compatible with various microcontroller and DSP outputs, enabling precise motor control without the need for complex peripheral circuits. This design significantly shortens product development cycles and accelerates time-to-market.

Exceptional reliability: By leveraging Infineon's proven power semiconductor process technology and stringent quality control standards, the BTN7975B demonstrates exceptional stability during long-term operation. Its automotive-grade certification further validates the product's reliability in harsh environments such as vibration and temperature cycling.

Cost-effective: Compared to discrete solutions, the BTN7975B reduces system BOM costs by minimising the number of components and PCB area. Additionally, its high efficiency reduces system operating energy consumption, achieving cost optimisation from a full lifecycle perspective.

Typical application areas

Automotive electronic systems: including electric power steering, electric water pumps, cooling fans, window lifters, and other body control modules. The BTN7975B complies with the AEC-Q100 standard, meeting the stringent reliability and environmental adaptability requirements of automotive electronics.

Industrial automation equipment: such as servo drives, industrial robot joint control, and conveyor belt motor drives. The BTN7975B chip's high current capability and protection features are particularly suitable for motor control applications in industrial environments.

Consumer electronics: including home appliances (such as washing machines and refrigerator compressors), power tools, and motor drives in smart home devices. BTN7975B's compact size and high efficiency align with consumer electronics' requirements for compact design and energy efficiency.

New energy sector: In renewable energy applications such as small-scale wind power systems and solar trackers, the BTN7975B can effectively drive actuators to maximise energy capture efficiency.