SC4510ITSTRT

SC4510ITSTRT Application Field and Working Principle

The SC4510ITSTRT is a compact high-frequency power converter for DC/DC conversion and is part of the SC4310ITSxRx series from Semco. Its application field includes computer power supplies, telecom power supplies, automotive power supplies, machine tool power supplies, and solar power supplies. It is a monolithic PWM controller that integrates the power MOSFET power switch.

Features

The device offers several features that make it ideal for a variety of applications, such as adjustable operating frequency, adjustable soft-start, overcurrent protection, and cycle-by-cycle current limitation.

Working Principle

The SC4510ITSTRT works by providing power to the output rail of a switching converter. The controller will operate in two modes: a constant frequency (CF) mode and a Burst Frequency (BFP) mode. In CF mode, the output voltage is regulated by varying the duty cycle D of the MOSFET. In BFP mode, the switching frequency is modulated by an external PWM signal.

Application Fields

The SC4510ITSTRT is suitable for step-down DC/DC applications such as:

• Computer Power Supplies
• Telecom Power Supplies
• Automotive Power Supplies
• Machine Tool Power Supplies
• Solar Power Supplies

Conclusion

The SC4510ITSTRT is an integrated switching controller that offers a reliable and efficient solution for a variety of applications. It features the ability to operate in both constant frequency and burst frequency modes, adjustable soft-start, overcurrent protection, and cycle-by-cycle current limitation. The device is suitable for use in a broad range of step-down DC/DC applications including computer power supplies, telecom power supplies, automotive power supplies, machine tool power supplies, and solar power supplies.