The WT6702F is a highly integrated PWM controller designed for offline power supplies. It incorporates features for high efficiency, low standby power consumption, and comprehensive protection, making it ideal for various applications such as adapters, chargers, and LED lighting.

Applications

• AC/DC Adapters
• Battery Chargers
• LED Lighting Power Supplies
• Auxiliary Power Supplies
• Standby Power Supplies

Features

• Green-mode operation: Enhances efficiency at light loads.
• Frequency jittering: Reduces EMI (Electromagnetic Interference) for cleaner operation.
• Internal high-voltage startup: Eliminates the need for an external startup resistor.
• Cycle-by-cycle current limiting: Protects the power supply from overcurrent conditions.
• Over-voltage protection (OVP): Prevents damage from excessive output voltage.
• Over-temperature protection (OTP): Protects the IC from overheating.
• Short-circuit protection (SCP): Shuts down the power supply in the event of a short circuit.
• Open-loop protection: Detects open-loop conditions and prevents output voltage runaway.
• Under-voltage lockout (UVLO): Ensures proper startup and shutdown.
• DIP-8 package: Industry-standard package for easy integration.

Benefits

• High Efficiency: Green-mode operation and optimized design minimize energy waste.
• Low Standby Power: Reduces energy consumption when the device is not actively charging.
• Enhanced Reliability: Comprehensive protection features ensure long-term reliability.
• Simplified Design: Integrated features reduce the number of external components required.
• Reduced EMI: Frequency jittering minimizes electromagnetic interference.
• Lower System Cost: Integration lowers the overall bill of materials cost.

The WT6702F offers a robust and cost-effective solution for implementing offline power supplies. Its combination of high efficiency, low standby power consumption, and comprehensive protection features makes it a suitable choice for a wide range of applications, including adapters, chargers, and LED lighting power supplies. The internal high-voltage startup and frequency jittering further simplify the design process and improve system performance. Weltrend's WT6702F is a reliable and efficient PWM controller for modern power supply designs.