Power Motor Driver Half-Bridge LMD18245T/NOPB by Texas Instruments, dual parallel, TO-220-15 package

Texas Instruments LMD18245T/NOPB is a power motor driver integrated circuit designed as two half-bridge outputs in a TO-220-15 package. The device supports paralleling of the two outputs to increase continuous current capability, making it suitable for driving DC motors, solenoids and other inductive loads. It incorporates on-chip power handling and protection features to simplify power stage design and to improve thermal performance in industrial and automotive control applications.

Advantages

The dual half-bridge configuration with parallelable outputs provides flexible current scaling without requiring multiple discrete drivers. The TO-220-15 package offers enhanced thermal dissipation for higher power applications. Integrated protection and control functions reduce the need for external components and help protect the load and driver during switching transients and fault conditions. The device is intended for reliable operation in motor control and power-stage circuits where robust switching and heat management are required.

Suitable for

• Driving brushed DC motors and gearmotors in industrial or automotive actuators
• H-bridge configurations for bidirectional motor control
• Power stages for solenoids, relays and other inductive loads
• Prototyping and designs that require higher continuous current via paralleling

Key specifications

• Dual half-bridge outputs that can be paralleled for increased current capability
• TO-220-15 through-hole power package for improved thermal dissipation
• Designed to drive inductive loads such as DC motors and solenoids
• On-chip power-handling features and protection circuitry for fault conditions
• Simplifies implementation of H-bridge and motor driver topologies

How to use

Integrate the device into a motor-driver PCB following recommended power supply layout and grounding practices to ensure effective heat dissipation from the TO-220-15 package. When higher current is required, parallel the two half-bridge outputs according to the manufacturer's application guidelines, taking care to match wiring and share thermal load. Include appropriate decoupling, snubber or transient suppression elements as indicated for inductive loads and provide proper heatsinking to maintain safe junction temperatures during continuous operation.

Recommendations

Verify application-specific requirements such as supply voltage, continuous and peak current, and thermal limits before paralleling outputs. Use recommended PCB layout and heatsink mounting to optimize thermal performance, and follow standard practices for protecting against inductive voltage spikes when driving motors or solenoids.