The PN8305SPC-R1H, manufactured by Wuxi, is a highly integrated PWM power switch designed for offline flyback converter applications. It incorporates a built-in high-voltage power MOSFET and a sophisticated control circuit, enabling high-efficiency and compact power supply designs.

Applications:

• Adapters and chargers for mobile devices
• LED lighting power supplies
• Standby power supplies
• Small power adapters
• Open-frame power supplies
• Household appliances power supplies
• Industrial power supplies

Features:

• Integrated high-voltage power MOSFET: Simplifies design and reduces component count.
• PWM control: Provides stable and efficient power conversion.
• Frequency jittering: Improves EMI performance.
• Over-temperature protection (OTP): Protects the device from overheating.
• Over-voltage protection (OVP): Prevents output voltage from exceeding safe levels.
• Over-current protection (OCP): Limits output current to prevent damage.
• Short-circuit protection (SCP): Protects against short-circuit conditions.
• Under-voltage lockout (UVLO): Ensures proper operation at low input voltages.

Benefits:

• High efficiency: Integrated MOSFET and optimized control circuit enable high efficiency, reducing power consumption.
• Simplified design: Integrated features reduce component count and simplify PCB layout.
• Improved reliability: Comprehensive protection features enhance the reliability of the power supply.
• Reduced EMI: Frequency jittering minimizes electromagnetic interference.
• Cost-effective: Integrated design reduces overall system cost.

Specifications:

The PN8305SPC-R1H typically operates with an input voltage range of 85VAC to 265VAC. It supports output power levels up to approximately 18W. Switching frequency is generally around 65kHz. The device includes comprehensive protection features such as over-voltage protection (OVP), over-current protection (OCP), over-temperature protection (OTP), and short-circuit protection (SCP). For detailed specifications, consult the official Wuxi PN8305SPC-R1H datasheet.

This PWM power switch is a versatile and reliable solution for a variety of offline flyback converter applications.