SOIC8 PWM Controller Addresses AC-DC Power Supply Shortages

Rohm, a leading semiconductor manufacturer, has recently unveiled an innovative external FET-type controller with pulse width modulation (PWM) current control mode. This development comes in response to the ongoing supply chain shortages affecting industrial AC-DC power supply designs.

The new PWM controller from Rohm offers a versatile solution to address the scarcity of semiconductor components in power supply applications. With variants supporting a wide range of power transistors, including Si MOSFETs, IGBTs, and SiC MOSFETs, the controller is designed to meet diverse industry needs.

Featuring built-in high accuracy undervoltage prevention malfunction and available in a standard SOP-J8 package, the Rohm PWM controller is set to streamline power supply circuit designs. The lineup includes four variants with different undervoltage lockout levels tailored for specific semiconductor types, ensuring compatibility and efficiency.

Looking ahead, Rohm plans to expand the PWM controller family to include products suitable for driving high-voltage MOSFETs and GaN devices. This strategic move aims to further enhance the versatility and applicability of the controllers in industrial settings.

Despite signs of improvement in the global semiconductor shortage, Rohm emphasizes that the demand for power supply components remains high in industrial applications. The company acknowledges the persistent challenges in sourcing PWM controller ICs and aims to address these issues through continuous product development and innovation.