The PN8123 is a high-performance, low standby power current mode PWM controller optimized for off-line flyback converter applications. Manufactured by Wuxi, it integrates comprehensive protection features and delivers exceptional efficiency, reliability, and cost-effectiveness.

Applications:

• AC/DC adapters for mobile devices and consumer electronics
• Standby power supplies for TVs and set-top boxes
• LED lighting drivers
• Auxiliary power supplies

Features:

• Built-in high voltage power MOSFET
• Valley switching for low EMI and high efficiency
• Low standby power consumption (<70mW)
• Programmable cable compensation
• Built-in over voltage protection (OVP), over current protection (OCP), over temperature protection (OTP), and short circuit protection (SCP)
• Frequency jittering for improved EMI performance
• DIP-8 package

Benefits:

• Simplifies design and reduces BOM cost with integrated high voltage MOSFET.
• Achieves high efficiency and reduces EMI noise with valley switching.
• Meets energy efficiency standards with ultra-low standby power consumption.
• Compensates for voltage drop across cables using programmable cable compensation.
• Enhances system reliability with comprehensive protection features.
• Reduces EMI emissions through frequency jittering technique.
• Easy to mount due to the DIP-8 package.

Additional Details:

The PN8123 integrates a high-voltage power MOSFET and a current mode PWM controller in a single package, simplifying the design and reducing the BOM cost. The valley switching operation reduces switching losses and improves efficiency, while also minimizing EMI noise. Its ultra-low standby power consumption of less than 70mW meets stringent energy efficiency requirements. The programmable cable compensation feature allows for precise output voltage regulation, even with varying cable lengths. The built-in protection features, including OVP, OCP, OTP, and SCP, ensure safe and reliable operation. The frequency jittering technique effectively reduces EMI emissions, simplifying compliance with regulatory standards. The PN8123 is available in a DIP-8 package, facilitating easy assembly and integration into various applications.