EVL185W-LEDTV 185 W power supply with PFC and standby supply for LED TV based on the L6564, L6599A and Viper27L Data brief Features Universal input mains range: 90264 Vac - frequency 4565 Hz Output voltage 1: 130 V 8 % at 620 mA for backlight Output voltage 2: 24 V 8 % at 2 A for audio supply Output voltage 3: 12 V 1 % at 4 A for panel supply Output voltage 4: 5 V 2 % at 2 A for microprocessor supply Mains harmonics: acc. to EN61000-3-2 Class- the logic circuitry, and a bigger section composed D or JEITA-MITI Class-D of a front-end PFC, using the new TM L6564 and an LLC resonant converter, using the L6599A, Standby mains consumption: <170 mW at 230 delivering three output voltages: 12 V dedicated Vac with 50 mW load to supplying the TV panel, 24 V to supplying the Overall efficiency at full load: >90% audio power amplifiers, and 130 V dedicated to EMI: according to EN55022-Class-B the backlight. Safety: according to EN60065 The PFC stage delivers 400 V constant voltage Dimensions: 115x204 mm, 25 mm maximum and acts as the pre-regulator for both the LLC component height from PCB stage and the standby supply. PCB: single side, 70 m, CEM-1, mixed An external signal, referred to secondary ground, PTH/SMT introduction turns the PFC and the LLC stage on and off. RoHS compliant Description The EVL185W-LEDTV is a high-end demonstration board tailored to the specifications of a typical LED TV application. The peculiarities of this design are the very high average efficiency of about 90%, without synchronous rectification, and very low no load consumption of 100 mW at 230 Vac. The result is that this converter is compliant to the most demanding ENERGY STAR eligibility criteria. The architecture is made up of two sections, based on a three-stage approach: a 10 W standby supply using the new VIPer27L, which delivers the 5 V standby dedicated to supplying the microprocessor and April 2011 Doc ID 018695 Rev 1 1/5 For further information contact your local STMicroelectronics sales office. www.st.com 5Efficiency EVL185W-LEDTV 1 Efficiency Thanks to the chipset used, the main peculiarities of this design are the very high efficiency as well as the very low input consumption during standby operation. Table 1. Overall efficiency measured at 230 Vac mains voltage 230 V - 50 Hz Pout Pin Eff. 12 V 24 V 130 V 5 V Test W W % Iout Iout Iout Iout Vout Vout Vout Vout V V V V A A A A 25% load eff. 11.95 1.00 24.19 0.50 128.89 0.15 5.05 0.50 46.09 52.00 88.6 50% load eff. 11.93 2.01 24.28 1.00 129.95 0.31 5.04 1.00 93.30 101.50 91.9 75% load eff. 11.90 3.01 24.38 1.50 131.05 0.47 5.04 1.50 141.67 151.90 93.3 100% load eff. 11.88 3.99 24.48 2.00 132.18 0.62 5.04 2.00 187.96 201.50 93.3 Average eff. 91.8 Table 2. Overall efficiency measured at 115 Vac mains voltage 115 V - 60 Hz Pout Pin Eff. 12 V 24 V 130 V 5 V Test W W % Iout Iout Iout Iout Vout Vout Vout Vout V V V V A A A A 25% load eff. 11.95 1.00 24.19 0.50 128.89 0.15 5.05 0.50 46.09 52.35 88.0 50% load eff. 11.93 2.01 24.28 1.00 129.95 0.31 5.04 1.00 93.30 102.85 90.7 75% load eff. 11.90 3.01 24.38 1.50 131.05 0.47 5.04 1.50 141.67 154.92 91.4 100% load eff. 11.87 3.99 24.47 2.00 132.15 0.62 5.04 2.00 187.76 206.84 90.8 Average eff. 90.2 2/5 Doc ID 018695 Rev 1