MC34152DG

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The MC34152DG is part of STMicroelectronics’ Motor Drivers, Power Management, and Gate Drivers product line, and is a gate driver for high- and low-side external MOSFETs widely used in motor control, automotive, and power conversion applications. The MC34152DG helps provide operational simplicity, allowing programming of short complementary PWM drives (up to 4kHz switching frequency), current modes, and dual inverters for H-bridges, making it an ideal solution for stepper motor and brushless DC motor control. The MC34152DG also has a wide range of built-in protection features, including thermal shutdown, overcurrent protection, undervoltage lockout, and overvoltage protection.

The MC34152DG features a high performance charge pump, capable of providing up to 20A peak source current and 20A peak sink current, to control the N-MOSFETs and P-MOSFETs of the H-bridge. The power supply voltage of the MC34152DG can be as low as 4V and the device is capable of working up to a maximum supply voltage of 18V. It can support a wide range of load currents for motor control applications, up to 10A of continuous current per channel. The MC34152DG can be integrated with a DC motor controller, allowing a single MC34152DG to control both winding and commutation circuits.

The MC34152DG can also be used in applications requiring multiple drive signals, such as in H-bridge or 3-phase bridge motor control, or other power control applications. The MC34152DG has four output drivers, two for low-side and two for high-side switches, allowing bi-directional PWM control of the outputs. The outputs are also capable of being programmed for complementary, non-complementary, asymmetric, and broken line signals. The device allows for simultaneous control of both high-side and low-side switches using separate logic, making it highly integrated and suitable for three-phase brushless DC motors with three- or four-phase commutation.

The MC34152DG features a high-performance charge pump, capable of providing up to 20A peak source current and 20A peak sink current, to control the N-MOSFETs and P-MOSFETs of the H-bridge. The charge pump of MC34152DG utilizes a bootstrap circuit for switching of the high-side transistors, and a relatively lower voltage seen at the switches enables higher efficiency over common gate driver solutions. The MC34152DG also provides advanced protection features such as under-voltage lockout (UVLO), temperature monitoring, current sensing, and over-voltage protection, for more reliable operation and system-level protection.

The MC34152DG is ideal for motor control applications such as industrial brushless motors, ac servomotors, three-phase stepper motors, and automotive engine control applications. With its four-channel gate driver and its integrated features, it provides an easy-to-use and cost-effective solution for these applications. The MC34152DG also allows for a simple two-wire interface to a microcontroller, providing a low-cost and highly integrated solution for motor control applications. The MC34152DG is also well-suited for use in automotive, medical, industrial, and home appliance applications, due to its high level of integration and built-in protection features.

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