High-Power Half-Bridge Solution with the Infineon BTS7930B PROFET™ Smart Driver IC

In the realm of high-power motor control and industrial automation, the demand for robust, efficient, and intelligent driver solutions is ever-increasing. The half-bridge configuration stands as a fundamental building block for such applications, enabling precise bidirectional control of DC motors, solenoids, and other inductive loads. Addressing this need, Infineon Technologies' BTS7930B PROFET™ (Protected MOSFET) +2mΩ Smart High-Side Switch emerges as a premier integrated solution, combining high-current handling with advanced diagnostic and protection features in a single, compact package.

The BTS7930B is a fully integrated half-bridge module housed in a single PG-TO263-7 package. It incorporates two N-channel power MOSFETs configured as a high-side and low-side switch. This monolithic integration significantly reduces PCB footprint and simplifies circuit design compared to traditional discrete MOSFET implementations, which require separate drivers, level shifters, and protection circuits. The device is engineered to handle continuous currents up to 30A and features an exceptionally low total typical on-state resistance (RDS(on)) of just +2mΩ per switch, which translates to minimal conduction losses and superior thermal performance. This high efficiency is critical for applications like electric power steering (EPS), hydraulic pumps, or industrial actuators, where heat dissipation is a primary concern.

Beyond its raw power capabilities, the "Smart" aspect of the PROFET™ technology is what truly sets it apart. The BTS7930B is equipped with a comprehensive suite of advanced protective and diagnostic functions that enhance system reliability and safety. These include:

Overcurrent Limitation (OCL): Protects the device and the load by limiting the output current during a short circuit or overload condition.

Overtemperature Shutdown (TSD): Automatically disables the switches if the junction temperature exceeds a critical threshold, preventing thermal runaway.

Undervoltage Lockout (UVLO): Ensures the device only operates when the supply voltage is within a safe range, preventing malfunction.

Open Load Detection: Can detect a disconnected load in both on and off states, a crucial feature for safety-critical systems.

Current Sense (IS) Pin: Provides a proportional current mirror output for real-time load current monitoring without the need for an external shunt resistor, enabling closed-loop control and fault prediction.

The integration of these features allows designers to build more reliable systems with reduced component count and software overhead for fault handling. Furthermore, the device is designed for PWM (Pulse-Width Modulation) operation at frequencies typical for motor control, making it an ideal choice for applications requiring variable speed or torque.

ICGOODFIND Summary: The Infineon BTS7930B PROFET™ is a highly integrated, intelligent half-bridge driver that delivers exceptional power density and reliability. It masterfully combines high-current capability with minimal losses and a robust set of built-in protection and diagnostic features. This integration simplifies design, accelerates time-to-market, and provides the resilience required for demanding automotive and industrial applications, establishing it as a top-tier solution for high-power half-bridge designs.

Keywords:

1. Half-Bridge

2. PROFET™

3. High-Current

4. Integrated Protection

5. BTS7930B