L6205 DMOS DUAL FULL BRIDGE DRIVER

Category: Electronics, Other Semiconductors, STMicroelectronics Inc

The L6205 datasheet describes a DMOS Dual Full Bridge Driver specifically designed for motor control applications. Manufactured utilizing BCD technology, which integrates DMOS power transistors alongside CMOS and bipolar circuits on a single chip, the L6205 is optimized for driving bipolar stepper motors as well as dual or quad DC motors.

Several key features of the L6205 include:

Operating Supply Voltage: The device can operate with a supply voltage ranging from 8 to 52V.
Output Peak Current: It is capable of delivering a peak output current of 5.6A, with a continuous current rating of 2.8A.
On-Resistance (R_DS(on)): The typical on-resistance at 25°C is 0.32Ω, ensuring efficient operation.
Operating Frequency: The device functions at frequencies up to 100kHz.
Protection Features: Notable safety features include non-dissipative overcurrent protection, cross-conduction protection, thermal shutdown, and under-voltage lockout.
Integrated Diodes: Fast free-wheeling diodes are integrated into the device for enhanced performance.

Moreover, the L6205 supports paralleled operation for increased power demands and includes a charge pump, overcurrent detection, a voltage regulator, and thermal protection as part of its internal circuitry. This comprehensive protection scheme ensures robust and reliable operation, safeguarding the motor control system against various potential faults.

The L6205 is available in multiple package options, including PowerDIP20 (16+2+2), PowerSO20, and SO20 (16+2+2), to cater to different application requirements. The specific ordering numbers are L6205N for the PowerDIP20 package, L6205PD for the PowerSO20 package, and L6205D for the SO20 package.

Considering its robust features and protection mechanisms, the L6205 is suitable for applications that require high-performance and reliable motor driving capabilities, such as those used in industrial and consumer automation.

Block Diagram Overview:

The block diagram provided in the datasheet illustrates the interconnected internal components of the L6205, which include two sets of charge pumps, gate logic, and overcurrent detection circuits for both bridge A and B, as well as thermal protection and a voltage regulator that ensure stable and safe operation under varying conditions.