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UM10379 Typical 250 W LCD TV AC-DC power supply application with the TEA1713 PFC and half-bridge resonant controller Rev. 01 -- 16 April 2010 User manual Document information Info Content Keywords TEA1713, half bridge, PFC controller, LLC resonant, high efficiency, zero voltage switching, resonant frequency, leakage inductance. Abstract The TEA1713 includes a PFC controller as well as a controller for a half bridge resonant converter. This user manual describes a 250 W resonant switching mode power supply for a typical LCD TV design based on the TEA1713. The board provides 3 output voltages of 24 V / 8 A, 12 V / 4 A and a standby supply of 5 V / 2 A. Good cross regulation is achieved without using a compensation circuit. It is also possible to test the Burst mode of the TEA1713. This feature is normally used in single-output resonant converters but can also be tested with this demo board by making some circuit adjustments. In Burst mode, the no load input power is around 600 mW (490 mW when the 5 V STB supply is disconnected from the PFC bus voltage) at high mains voltage. Typical efficiency at high output power is above 90 % for universal mains input with Schottky rectifiers. NXP Semiconductors UM10379 TEA1713 250 W resonant demoboard Revision history Rev Date Description 01 20100416 First issue Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] UM10379_1 All information provided in this document is subject to legal disclaimers.