ErP Compliant Smart Home Auxiliary Power Solution (IoT/White Goods)
LiTong Group offers an optimized auxiliary power solution for smart home devices and white goods, designed to meet stringent ErP (Energy-related Products) directives for ultra-low standby power consumption. This solution leverages Power Integrations' highly integrated AC-DC converter ICs to provide reliable, efficient, and cost-effective power for always-on functionalities in IoT devices, smart appliances, and other connected systems.
With the increasing demand for energy efficiency and connectivity, auxiliary power supplies play a critical role. Our solution ensures that smart home devices consume minimal power in standby mode, contributing to overall energy savings and compliance with global environmental regulations, while maintaining robust performance for communication modules and control circuits.
Power Architecture Diagram
Figure 1: Simplified block diagram of the ErP Compliant Smart Home Auxiliary Power Solution.
The architecture typically features a highly integrated Power Integrations AC-DC converter (e.g., LinkSwitch or TinySwitch series) providing a stable and efficient power rail for the microcontroller, communication modules (Wi-Fi, Bluetooth), and sensors, ensuring minimal power draw during standby.
Key IC Advantages
- **Ultra-Low Standby Power:** Power Integrations' ICs are optimized for extremely low no-load and standby power consumption, easily meeting ErP Lot 6 and other global efficiency standards.
- **High Integration:** Combines power MOSFET, controller, and protection features into a single IC, reducing component count and board space.
- **Robust Protection:** Integrated over-voltage, over-current, and over-temperature protection ensure reliable operation and system longevity.
- **Cost-Effective:** Simplified design and minimal external components lead to lower overall system cost.
- **Reliable Operation:** Proven field reliability in millions of applications worldwide.
Recommended Bill of Materials (BOM List)
- **AC-DC Converter:** Power Integrations LNK364PN (LinkSwitch-TN2) or TNY280PN (TinySwitch-III)
- **Input Capacitors:** [Specific type and rating]
- **Output Capacitors:** [Specific type and rating]
- **Transformer:** [Custom design based on PI Expert]
- **Microcontroller:** [Example, e.g., ESP32]
Note: The above BOM is illustrative. Actual component selection may vary based on specific power requirements, output voltages, and regional certifications. Our FAE team can assist with detailed BOM optimization.
Application Scenarios
- Smart appliances (refrigerators, washing machines, air conditioners)
- IoT hubs and gateways
- Smart lighting controls
- Home security systems
- Standby power for consumer electronics