EVL6566A-75WES4 19 V - 75 W SMPS compliant with latest Energy Star criteria using the L6563 and the L6566A Data brief The peculiarities of this design are the very high Features efficiency at light load and the excellent global Universal input mains range: 90 - 264 V - efficiency for a two-stage architecture. The high ac Frequency 45 - 65 Hz efficiency at high load is achieved without using synchronized rectification at secondary side and Output voltage: 19 V 4 A continuous therefore offers a very cost effective solution. operation The circuit is made up of two stages: a front-end Mains harmonics: Acc. to EN61000-3-2 Class- PFC using the L6563 and a flyback converter D or JEIDA-MITI Class-D based on the L6566A. The CV/CC controller Standby mains consumption: < 0.14 W 230 TSM1014 allows the correct current limitation on V , < 0.085 W 115 V ac ac the secondary side. The flyback stage works as Active load average efficiency: better than 87% master and it is dedicated to controlling the circuit without synchronous rectification operation, including the standby and protections. Additionally, it switches the PFC stage on and off EMI: According to EN55022-Class-B by means of a dedicated pin (VCC PFC), Safety: According to EN60950 therefore helping to achieve an excellent Dimensions: 78x170 mm, 25 mm component efficiency even at light load, with low complexity. maximum height Efficiency during active load and light load PCB: Single side, 70 m, CEM-1, Mixed operation are compliant with Energy Star PTH/SMT Eligibility Criteria for both external (EPA rev. 2.0 EPS) and computer integrated (EPA rev. 4.0 Description COMPUTERS) power supplies. In addition, this design is also compliant with the latest computer This board implements a 75 W SMPS reference requirements. design, tailored to the specifications of a typical hi-end portable computer power supply (adapter). Figure 1. EVL6566A-75WES4 Energy Star compliant adapter demonstration board November 2011 Doc ID 022539 Rev 1 1/5 For further information contact your local STMicroelectronics sales office. www.st.com 5 EVL6566A-75WES4 Figure 2. EVL6566A-75WES4 electrical diagram - - 9 5 5 5 5 0. 6 0. 6 & & 1 1 & & 1 1 & & 1 1 5 5 X 9 X 9 & & *1 & & &&B287 &9B287 1 1 760 ,67760 ,67 & & 8 8 9B5() && && &9 1 1 5 5 / / 76/ 5 0 5 3)76/ 5 0 5 3) 5 5 5 5 5 5 5 5 & & 1 1 5 5 5 5 4 4 %& &%& & 5 5 5 5 5 5 4 4 %& &%& & 5 5 5 5 5 5 5 5 %=9 % %=9 % 5 5 & & X 9 X 9 5 5 5 5 5 5 & & X 9 X 9 5 5 5 5 6736 + &)36736 + &)3 6736 + &)36736 + &)3 & & 1 1 8 8 & & 1 1 & & 1 1 6)+ 6)+ +6 +6 6,1.7+( 7 6,1.+( 5 5 5 5 .( .( 4 4 67) 10 67) 10 5 5 5 5 677+ 677+ 7 7 6565: (& 7 + : (& 7 + 5 5 5 5 5 5 +6 +6 +( +( 6,1. 6,1.77 5 5 5 5 5 5 0 0 5 5 0 0 5 5 0 0 5 5 5 5 5 5 5 5 5 5 // // & & 1 1 & & S) S) & & S) S) & & 1 1 5 5 5 5 5 5 66 9)) 26& =& 95() & & 1 1 &203 &B2. 677+ 677+ 02 ( 6& 5 5 +9 1 & *1 * 9&& 9&&B3)& &6 ,6 8 8 / / 5 5 0 0 & & 1 1 & & S) S) 5 5 & & X 9 X 9 5 5 5 5 5 5 & & X 9 X 9 +6 +6 6,1.7+( 7+( 6,1. 5 5 0HJ 0HJ 677+ / 677+ / 5 5 5 5 4 4 67) 10 67) 10 & & 1 1 5 5 & & 1 1 & & S) .9 S) .9 1 1 1 1 1 1 5 5 5 5 5 5 5 5 4 4 %& &%& & & & Q) Q) 5 5 & & 1 1 / / : &4 7 9 65: &4 7 9 65 5 5 & & Q) Q) & & Q) Q) 5 5 5 5 & & 1 9 1 9 BB & & 1 1 5 5 5 5 aa *%8 -*%8 - * & & 1 1 9&& =& aa *1 581 233:0 67 7&+3:0 / 5 5 & & 1 1 6 06 0 8 8 / 6/ 6 ,19 &203 08/ &6 9)) 7%2 3)& 2. 7 5 5 / / +) < 5 7 +) < 5 7 & & 1 1 5 5 & & S S & & 1 1 5 5 & & X) X) & & 1 1 & & 1 1 & & X X 5 5 5 5 0HJ 0HJ & & Q) Q) ) ) )86( )86( - - 0. 6 0. 6 DF 9 5 5 0 0 5 5 0 0 - V 2/5 Doc ID 022539 Rev 1 9&&