Abstract

A PD GaN fast charger achieves high conversion efficiency thanks to low GaN device loss. The PD GaN fast charger must meet efficiency limits at 25%,50%,75%,100% load points. This PD GaN fast charger covers average efficiency, no-load standby power and burst mode threshold parameters, ensuring compliance with DOE VI and EU ErP energy rules.

1. Average Efficiency Test Rules

Average efficiency of the PD GaN fast charger is weighted across four load points. GaN devices inside the PD GaN fast charger reduce switching loss and improve efficiency across the whole load range. The PD GaN fast charger can more easily satisfy strict overseas energy standards.

2. Light-Load Burst Mode

At light load, the PD GaN fast charger enters burst mode. The PD GaN fast charger cuts switching cycles to reduce light-load power loss. Burst threshold tuning of the PD GaN fast charger balances noise and efficiency.

3. No-Load Standby Power

No-load standby consumption of the PD GaN fast charger must stay under regulatory limits. The PD GaN fast charger uses low-quiescent-current MCU to reduce standby drain. Standby power of the PD GaN fast charger is heavily checked during market surveillance.

4. Efficiency Variation by Power Rating

Higher rated power of the PD GaN fast charger enables higher peak average efficiency. 65W and 100W PD GaN fast charger models perform better than low-power variants. Device selection and topology set final efficiency.

5. Business Value of Energy Compliance

Non-compliant PD GaN fast charger products cannot be sold in EU and US markets. Energy performance is a critical evaluation metric when B2B buyers select a PD GaN fast charger supplier.

Conclusion

Wide-range high efficiency is critical for global market launch of the PD GaN fast charger. For efficiency test data of a PD GaN fast charger, contact Simsukian for reports and samples.

References

1. USB-IF USB Power Delivery Specification

2. IEC 62680-1-2 USB PD International Standard

3. DOE Level VI External Power Supply Standard