Texas Instruments Launches Two Power Management Chips

Texas Instruments Incorporated (TI) has launched two power management chips, a dual-phase power factor correction (PFC) controller with Natural Interleaving technology and a SWIFT DC/DC power management converter, will help increase energy efficiency and reduce system size and cost in Digital TVs. Based on its previously announced UCC28060 PFC controller, TI’s UCC28061 controller helps facilitate the thinnest LCD TVs by incorporating smaller electromagnetic interference (EMI) filters, smaller or fewer output capacitors and smaller boost inductor volume to result in thinner power supply designs. The dual-phase transition-mode operation helps lower overall system costs, and is simpler to design than previously used continuous conduction mode controllers.



The TPS54331 SWIFT DC/DC converter reduces the power consumption of LCD TV point-of-load circuit board designs. The device’s light-load increases energy efficiency by more than 25 percent compared to conventional DC/DC converters due to a novel Eco-mode switching technique, 110-µA operating current and low 1-µA shutdown current. The TPS54331 has a wide input range of 3.5 V to 28 V, an output voltage adjustable down to 0.8 V, and supplies up to 3-A output current, which provides ample power for the digital and analog circuit blocks of an LCD TV. The UCC28061 and TPS54331 are available today from TI and its authorized distributors in 16-pin and 8-pin SOIC packaging, respectively. Suggested resale pricing in 1,000-unit quantities is $1.30 for the UCC28061 and $1.35 for the TPS54331.