AC DC Converters and Offline Switchers

AC-DC Converter and Offline Switcher ICs are highly integrated power management components designed to convert high-voltage alternating current (AC) mains power (typically 85V to 265V AC) directly into stable, low-voltage direct current (DC) rails. These devices combine high-voltage power MOSFETs, control logic, start-up circuitry, and fault protection blocks onto a single die, serving as the power core of compact offline switch-mode power supplies (SMPS) for charger adapters, appliances, and industrial drives.

Modern converter ICs support advanced topologies including flyback, buck, and LLC resonant controllers, utilizing Frequency Modulation or Pulse Width Modulation (PWM) to achieve high efficiency under varying loads. Key selection parameters include maximum drain voltage (e.g., 700V, 800V, or 900V for high line surge tolerance), output power rating (watts), line/load regulation, standby power consumption (minimizing no-load energy), and integrated safety features like overvoltage, overcurrent, and thermal shutdown.

Browse Octatronics to search and compare AC-DC switcher ICs from industry giants including Power Integrations (InnoSwitch, LinkSwitch, and TOPSwitch series), Texas Instruments, STMicroelectronics, onsemi, and Infineon. Access datasheets, check real-time stock, and submit bulk RFQs online.