UCD3138A64

The UCD3138A64 is a high-performance digital controller from Texas Instruments designed for advanced power management in industrial and automotive applications. It features a 32-bit TMS320C28x CPU core running at up to 150 MHz, enabling fast execution of complex control algorithms. The device integrates dual independent PWM generators, allowing precise synchronization and control of multiple power stages, such as those found in multiphase DC-DC converters or motor drives. This controller includes on-chip memory with 256 KB of flash and 32 KB of RAM, supporting efficient code storage and real-time data processing. It also offers extensive peripheral support, including a dedicated analog-to-digital converter (ADC) with 12-bit resolution and up to 16 channels, which enables accurate sensing of voltage, current, and temperature. The integrated high-speed communication interfaces—such as SPI, SCI, and CAN—facilitate seamless integration into larger system architectures and real-time diagnostics. One of the key strengths of the UCD3138A64 lies in its robust fault protection mechanisms. It supports programmable over-current, over-voltage, under-voltage, and thermal shutdown protections, ensuring safe operation under abnormal conditions. Additionally, the device includes built-in dead-time control and complementary PWM generation, making it ideal for driving high-side and low-side MOSFETs in synchronous rectification topologies. Designed for high-efficiency power conversion, the UCD3138A64 supports various modulation techniques, including phase-shifted full-bridge, buck, boost, and SEPIC topologies. Its flexible timing architecture allows fine-tuned control of switching frequencies and duty cycles, optimizing efficiency across different load conditions. This makes it particularly suitable for use in server power supplies, telecom systems, electric vehicle chargers, and industrial motor drives where reliability and performance are critical. The device is manufactured using a 65-nm CMOS process, contributing to low power consumption and high integration density. It operates over a wide supply voltage range of 3.3 V ±5%, ensuring compatibility with standard logic levels in modern embedded systems. The UCD3138A64 also supports external trigger inputs for event synchronization, enhancing system-level coordination in multi-controller environments. With comprehensive development support from TI’s C2000™ software tools and code examples, engineers can accelerate design and reduce time-to-market. The controller’s modular architecture and rich feature set make it an ideal choice for next-generation power electronics that demand precision, scalability, and robustness.