Infineon Technologies BTN7960S

Overview

BTN7960S from Infineon Technologies is a high-current half-bridge motor driver IC designed for bidirectional DC motor control in automotive and industrial applications. It integrates two N-channel MOSFETs, supports 8–18 V supply, delivers up to 43 A peak output current, features integrated current sense (0.5 mΩ sense resistor), and includes thermal shutdown and overcurrent protection.

For engineers reviewing the BTN7960S datasheet, BTN7960S pinout, BTN7960S application, or BTN7960S equivalent, key selection considerations include its integrated current sensing capability, TO220-7 package thermal performance, enable/inhibit logic interface, and suitability for 12 V battery-powered H-bridge implementations requiring robust fault handling.

Technical Context

The BTN7960S implements a monolithic half-bridge topology with matched high-side and low-side N-channel power MOSFETs, driven by an integrated gate driver with adaptive dead-time control. It uses internal temperature monitoring to trigger thermal shutdown at 175 °C and employs cycle-by-cycle current limiting based on the integrated 0.5 mΩ sense element.

Control is implemented via INH (inhibit) and IN (input) pins: INH must be high for operation, and IN determines direction (high = forward, low = reverse). The device lacks built-in PWM generation but accepts externally supplied PWM signals up to 25 kHz, with propagation delay < 1.5 µs and rise/fall times < 100 ns.

Key Specifications

Pinout & Package

BTN7960S is housed in a TO220-7 package with exposed drain pad for thermal conduction to heatsink. All seven pins are electrically and thermally optimized for high-power switching: pins 1–3 and 5–7 are power terminals; pin 4 is ground reference for current sense and logic.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge motor driver applications.

Compared with L99H02 and DRV8876N, BTN7960S uniquely balances high peak current (43 A), integrated current sensing, and TO220-7 thermal robustness for cost-sensitive, single-motor 12 V systems-making it optimal for power seats, conveyors, and robotics joints where simplicity and thermal margin are critical.

Availability

BTN7960S is available at Aetrix Electronics and suitable for automotive power seat actuation, industrial conveyor drives, robotics joint control, and medical infusion pump motor interfaces requiring stable component supply across production lifecycles.

Supply support for BTN7960S includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and qualification to AEC-Q100 standards.

The BTN7960S belongs to Infineon's PROFET+ family of high-current smart power switches, engineered specifically for robust, high-efficiency DC motor control in harsh environments such as automotive cabins and factory floors.

FAQ

What is the maximum PWM frequency supported by BTN7960S?

The BTN7960S supports PWM input frequencies up to 25 kHz. Its propagation delay is less than 1.5 µs and output rise/fall times are under 100 ns, enabling clean switching waveforms without significant distortion or shoot-through risk at this frequency. Higher frequencies may cause increased switching losses and require careful PCB layout to minimize parasitic inductance.

Does BTN7960S require an external flyback diode?

No external flyback diode is required. The BTN7960S integrates body diodes within its internal N-channel MOSFETs that provide freewheeling paths during inductive kickback. These diodes are rated for the device's full current and thermal limits, eliminating the need for discrete external diodes in standard DC motor applications.

How is current sensing implemented on BTN7960S?

Current sensing is implemented via an integrated 0.5 mΩ sense resistor between the power stage and GND. The CS pin outputs an analog voltage (1.5 V/A) referenced to GND, directly proportional to load current. This eliminates external shunts and allows MCU ADC sampling without signal conditioning, with ±15% accuracy over temperature and supply variations.

Can BTN7960S be used in an H-bridge configuration?

Yes - two BTN7960S devices can be combined to form a full H-bridge for reversible DC motor control. Each IC serves as one half-bridge leg (high-side + low-side), with coordinated IN/INH logic to prevent shoot-through. This configuration supports 43 A peak per leg and leverages the built-in current sense and thermal protection of both units independently.