DC-DC Converters | Voltage Regulators & Power Modules

DC-DC Converters
DC-DC converters provide efficient voltage conversion for power supply applications across automotive, industrial, telecommunications, and embedded systems. These switching regulators transform one DC voltage level to another with minimal power loss.

Converter Topologies
Buck converters step down voltage from higher to lower levels, while boost converters increase voltage output. Buck-boost and SEPIC topologies handle both step-up and step-down conversion in a single module. Isolated DC-DC converters use transformers to provide galvanic isolation between input and output.

Key Specifications
Input voltage range determines compatibility with power sources from 3.3V to 48V or higher. Output current ratings span from milliamps for low-power circuits to multiple amps for high-power loads. Efficiency ratings typically range from 85% to 98% depending on topology and operating conditions. Switching frequencies affect component size, with higher frequencies enabling smaller inductors and capacitors.

Applications
Automotive systems require wide input ranges to handle battery voltage variations and load dump conditions. Industrial equipment uses DC-DC converters for PLC power supplies, motor drives, and sensor interfaces. Telecommunications infrastructure relies on isolated converters for distributed power architectures. Battery-powered devices use high-efficiency converters to maximize runtime.

Selection Criteria
Determine required input and output voltage ranges, maximum output current, and efficiency targets. Consider thermal management requirements based on package type and heat dissipation. Evaluate protection features including overcurrent, overvoltage, and thermal shutdown. Check for necessary certifications such as automotive AEC-Q100 or industrial safety standards.