The SD6861 is an offline power switch IC from Silan Microelectronics, designed for low-power AC/DC power supply applications. It integrates a high-voltage power MOSFET and a current-mode PWM controller to deliver a cost-effective and efficient solution. Its primary aim is to reduce standby power consumption and improve overall system reliability.
Applications:
- Power adapters for mobile devices and tablets
- Standby power supplies for consumer electronics (TVs, set-top boxes)
- LED lighting power supplies
- Chargers for various electronic devices
- Auxiliary power supplies
Features:
- Integrated high-voltage power MOSFET
- Current-mode PWM control with valley switching
- Low standby power consumption (<0.1W)
- Built-in overcurrent protection (OCP)
- Overvoltage protection (OVP)
- Overtemperature protection (OTP)
- Short circuit protection (SCP)
- Frequency jittering for enhanced EMI performance
- Soft-start function to reduce stress during startup
Benefits:
- Reduced Bill of Materials: High integration minimizes the need for external components, lowering overall system cost.
- High Efficiency: Current-mode PWM control and valley switching optimize efficiency and reduce power dissipation.
- Enhanced Reliability: Comprehensive protection features ensure robust operation and prevent damage to the power supply.
- Ultra-Low Standby Power: Meets stringent energy efficiency standards with its ultra-low standby power consumption.
- Simplified Design: The integrated MOSFET and controller simplify the design process and reduce development time.
The SD6861 utilizes a valley switching technique which improves efficiency by switching at the minimum voltage point of the MOSFET. The frequency jittering feature reduces EMI emissions, simplifying compliance with regulatory requirements. The soft-start function minimizes stress on the components during startup. Available in DIP-8 and SOP-8 packages.
Typical Technical Specifications:
- Operating Voltage: 85VAC to 265VAC
- Switching Frequency: 65kHz
- Standby Power: <0.1W
- Protection Features: OCP, OVP, OTP, SCP
- Package: DIP-8, SOP-8
