mWSaver™ Technology (Design and PCB Space Savings)

e4ds: Could you please explain what mWSaver™ Technology, Fairchild's proprietary technology (design and PCB space savings), is?

Lee Eung-ho, Department Head: mWSaver addresses situations where power is wasted, such as when an AC outlet is plugged in but not in use, or when a battery is fully charged. mWSaver reduces unnecessary power consumption by applying the FAN6756 PWM controller (enabling reduction of standby power loss in external circuits without requiring additional support ICs).

e4ds: In that case, would it be difficult to apply to high-capacity products with high voltage and power ratings?

Lee Eung-ho, Department Head: For high-capacity products like TVs 60 inches and above (200–250W), there are many circuits and the circuits must continuously operate in the required sections, making it difficult to apply mWSaver technology. However, for products below these high capacities—specifically applicable products such as notebook adapters below 75W, cell phone chargers, and tablet chargers—mWSaver technology can be applied.

e4ds: How has mWSaver™ technology been applied in the FAN6756?

Lee Eung-ho, Department Head: Existing chips require additional circuits or ICs to reduce standby power consumption, which complicates the circuit and increases BOM cost. By using FAN6756, standby power consumption can be reduced without adding extra circuits or ICs.

e4ds: How do you view the market situation before the FAN6756 product launch?

Lee Eung-ho, Department Head: The FAN6756 includes a feature not present in the FAN6754—an innovative AX-CAP™ discharge method that satisfies safety requirements while simultaneously discharging X-cap energy through the HV pin when the power plug is removed from the AC outlet and removes the X-cap discharge resistor, thereby minimizing losses at the EMI filter stage.

e4ds: I heard there are international regulations that must be observed during no-load operation?

Lee Eung-ho, Department Head: Europe and the United States independently establish regulations such as "a certain number of watts of power must consume a certain number of watts during no-load operation." In the domestic market, when developing TVs, adapters, and chargers for export, the FAN6756 can be used to comply with regulations and achieve positive results.

e4ds: So Fairchild is keeping pace with increasingly stringent regulations?

Lee Eung-ho, Department Head: Yes, it's not easy to keep up with the regulations.

e4ds: Thank you for the interview.

Lee Eung-ho, Department Head: Yes, thank you.