Navitas and Density Power Solutions a 400-V, 300-W standard ¼ brick DC-DC converter using gallium nitride (GaN) GaNFast power ICs for high-reliability applications, such as industrial control systems, communication equipment, and server and telecom distributed power systems. The DQB300D375S28 provides a 28-V nominal output and follows the industry standard for simple installation and upgrade. It has an operating voltage range of 330 V to 425 V DC input and an operating temperature range of minus 40° to 100℃. It delivers the full 300 W in only 30 cc without derating.