STMicroelectronics L6225D Dual Full-Bridge Driver

The L6225D from STMicroelectronics is a high-performance dual full-bridge driver designed to drive inductive loads such as relays, solenoids, DC and bipolar stepping motors. It integrates two full bridges capable of sustaining up to 1A of current each, with a supply voltage range from 8V to 52V. This makes the L6225D an ideal choice for a wide array of applications requiring robust and reliable motor control.

The device is built using STMicroelectronics' advanced mixed bipolar CMOS DMOS (BCD) technology, which allows the integration of low RDS(on) DMOS power transistors with high-voltage bipolar and CMOS control circuitry on the same chip. The result is a compact, power-efficient, and reliable driver that simplifies design and reduces board space.

The L6225D features an internal decay mode selection that allows the user to optimize the power dissipation versus switching speed, according to the application’s requirements. The crossover-current protection and thermal shutdown circuitry enhance the safety and durability of the driver, ensuring protection against over-current and over-temperature conditions.

Additional features include non-dissipative overcurrent protection, which helps to prevent device failure due to excessive current, and a logic interface that supports standard TTL and CMOS levels for easy integration into control circuits. The device also provides a diagnostic output that can be used to monitor the functioning of the driver, adding an extra layer of control and safety.

With its robust design and comprehensive feature set, the STMicroelectronics L6225D is an excellent solution for designers looking to implement efficient and reliable motor control in their industrial, consumer, and office automation products. Its versatility and ease of use make it a go-to driver for a broad range of applications where dual full-bridge configurations are needed.