NXP has unveiled what it claims is the first resonant power factor correction (PFC) and LLC combo controller for switch-mode power supplies. LLC (inductor-inductor-capacitor) is a resonant technology.
Called TEA1716T, and designed for use in 90-500W power supplies, the chip is a half-bridge controller in a SO24 package.
No load power can be as low as 150mW, and efficiency more than 91% from universal mains.
0.5W input consumption is possible at "a load of approximately 250mW", said the firm.
Also announced was the TEA1731 6pin fly back converter for 10-70W supplies with sub-100mW no-load consumption, and also enabling supplies to be built to run below 0.5W at 0.25W load.
As was the TEA1792 6pin synchronous rectification controller.