TI Tackles Standby Power Leakage with LLC Controller
Published2017.10.30 15:55"As demand for home appliances is increasing globally, electrical consumption is rising. The amount of standby power consumed by electronic products is substantial enough to operate 50 large-scale factories. Standby power accounts for approximately 12~18% of total household electricity demand."
Steve Lambouses, Vice President of High Voltage Power Products at Texas Instruments (TI), made these remarks and explained that low standby power in electronic products is directly linked to improving energy efficiency and reducing energy costs.
TI's high-performance LLC (inductor-inductor-capacitor) resonant controller product, UCC256301, provides a cost-effective system solution that complies with energy efficiency standards for a wide range of AC/DC applications.
The UCC256301 achieves standby power of less than 40mW when fully controlling system output. This is 2~4 times lower than competing products. While there are no strict standards for standby power in Korea yet, the trend is to follow international regulations. This product exceeds EU CoC (Code of Conduct) Tier 2 and U.S. Department of Energy (DoE) Level VI efficiency standards, making it easy for developers to meet standby power requirements.
Most electronic products are configured for good efficiency at full load. However, in reality, products often operate at 50% load, making efficiency at light load conditions important. The UCC256301 can deliver up to 90% efficiency even at 10% light load conditions.
Additionally, through hybrid hysteretic control, it achieves transient response time up to 10 times faster, high stability, and no-load power in burst mode. With integrated X-capacitor discharge and high-voltage start functions, developers can design systems easily.
Vice President Steve Lambouses stated, "This product is used in household appliances such as digital TVs, game adapters, and notebook adapters, as well as in industrial applications including line power supplies." He added, "It can be used in all products consuming 100W~500W. By integrating X-cap IC, control functions that previously needed external On/Off switching are now built-in, making control easier and reducing space requirements."
He noted, "We plan to launch PFC controller flyback chipsets, GaN solutions, and gate drivers over the next one to two quarters." He emphasized, "While the LLC controller alone cannot significantly reduce standby power, using all the upcoming products together in the entire system can have a system-wide impact. TI is the only company with five such products."
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