Achieve a new low in standby power
A new inductor-inductor-capacitor (LLC) resonant controller with an integrated high voltage gate driver has been introduced by Texas Instruments. It enables what the company claims to be the industry's lowest standby power, as well as longer system lifetimes. The UCC256301 provides a cost effective system solution that helps meet stringent energy efficiency standards for a wide range of AC/DC applications, including digital televisions, gaming adapters, desktop computer and notebook adapters, and power-tool battery chargers.
The first in a family of new high performance LLC controllers, the UCC256301 enables standby power of less than 40mW when fully regulating the system output, while also performing better than industry efficiency requirements. By delivering the fastest transient response plus robust fault-protection features such as zero current switching avoidance, the device enables reliable operation over end-equipment lifetimes.
"The consumer electronics market demands efficient power supplies with low standby power. With this new family of LLC controllers, TI is enabling designers to do more with less power," said Steve Lambouses, TI Vice President, High Voltage Power. "The UCC256301 was designed to meet tomorrow's power requirements by delivering breakthroughs in standby power and efficiency while simplifying design and lowering system cost."
Key features and benefits of the UCC256301
- High efficiency and lowest standby power: By achieving a new low in standby power, the controller exceeds Code of Conduct (CoC) Tier 2 and US Department of Energy (DoE) Level VI efficiency standards and achieves more than 90% efficiency with a 10% load
- Faster and more stable system transient performance: Hybrid hysteretic control, a new patented control method from TI, enables up to ten times faster transient response and reduces output capacitance by 20%, leading to faster system response times
- Extended system lifetime: Robust fault-protection features on the device, such as zero current switching avoidance, extend system lifetimes
- Simplified design: Engineers can easily design their systems with the integrated X-capacitor discharge and high voltage startup features
Complete power supply design to get to market faster
The UCC256301 is the latest addition to TI's high voltage portfolio of end-to-end power-conversion solutions delivering high efficiency. In addition to the UCC256301, the new portfolio of LLC controllers includes the UCC256303, which works easily with an external bias, and the UCC256304, which supports wide input ranges.
Engineers can pair the UCC256301 with a TI Power Factor Correction (PFC) controller and Synchronous Rectifier (SR) controller to increase system efficiency. To meet a variety of power levels, PFC controllers include the UCC28180, UCC28063, UCC28051 and UCC28070. The UCC24610 SR controller can also be paired with the UCC256301 to further improve efficiency.