Texas Instruments

UCC38500N

UCC38500N Description

The UCC38500N from Texas Instruments is a high-performance Average Current Mode Power Factor Correction (PFC) Controller IC, designed for efficient AC-DC power conversion in demanding applications. Operating within a 9.7V to 18V supply range and supporting 100kHz switching frequency, this IC ensures optimal power factor correction with minimal harmonic distortion. Packaged in a 20-pin DIP (Through Hole), it is ideal for industrial and commercial power supplies requiring compliance with energy efficiency standards. With a low startup current of 150 µA, it minimizes power loss during initialization, enhancing system reliability.

UCC38500N Features

• Average Current Mode Control: Ensures precise current regulation, improving power factor and reducing input current distortion.
• Wide Operating Voltage (9.7V–18V): Supports robust performance in varying input conditions.
• Low Startup Current (150 µA): Reduces standby power consumption and enhances efficiency.
• 100kHz Switching Frequency: Enables compact magnetics and reduced EMI noise.
• RoHS3 & REACH Compliant: Meets environmental and regulatory standards for global deployment.
• Through-Hole Packaging (20DIP): Simplifies prototyping and integration in legacy systems.

UCC38500N Applications

The UCC38500N excels in active power factor correction circuits for:

• Industrial Power Supplies: Ensures compliance with IEC 61000-3-2 standards for harmonic emissions.
• Server & Telecom PSUs: Improves efficiency in high-power AC-DC converters.
• LED Drivers: Enhances power quality in high-brightness lighting systems.
• Medical & Test Equipment: Delivers stable, low-noise power for sensitive electronics.

Conclusion of UCC38500N

The UCC38500N stands out as a reliable, high-efficiency PFC controller, combining low-power operation, precise current control, and regulatory compliance. Its through-hole package and wide voltage range make it a versatile choice for engineers upgrading legacy systems or designing new power supplies. While classified as Last Time Buy, its performance and durability ensure long-term viability in critical applications. For designs requiring high power factor (>0.99) and low THD, this IC remains a competitive solution.