STEVAL-ISA149V1

STEVAL-ISA149V1 19 V, 75 W Energy Star-compliant SMPS using the L6563S and the L6566A Data brief Description Features           Universal input mains range: 90 - 264 Vac, Freq. 45 - 65 Hz Output voltage: 19 V @ 4 A continuous operation Mains harmonics: in accordance with EN61000-3-2 Class-D or JEIDA-MITI ClassD Standby mains consumption: < 0.14 W @ 230 Vac, < 0.085 W @ 115 Vac Active load average efficiency: greater than 87% without synchronous rectification EMI: in accordance with EN55022-Class-B Safety: in accordance with EN60950 Dimensions: 78 x 170 mm, 25 mm component maximum height PCB: single side, 70 μm, CEM-1, mixed PTH/SMT RoHS compliant June 2016 The STEVAL-ISA149V1 implements a 75 W SMPS reference design, tailored to the specifications of a typical high-end portable computer power supply (adapter). The peculiarities of this design are its very high efficiency at light load, and excellent global efficiency for a two-stage architecture. The high efficiency at high load is achieved without using synchronized rectification at the secondary side, resulting in a very cost-effective solution.The circuit is made up of two stages: a front-end PFC using the L6563S, and a flyback converter based on the L6566A. The CV/CC controller TSM1014 allows accurate current limitation on the secondary side. The flyback stage works as master and is dedicated to controlling circuit operation, including standby and protection functions. Additionally, it switches the PFC stage on and off by means of a dedicated pin (VCC_PFC), helping to achieve excellent efficiency even at light load, with a low level of complexity. Efficiency during active load and light load operation is compliant with Energy Star® eligibility criteria for both external (EPA rev. 2.0 EPS) and computer integrated (EPA rev. 4.0 COMPUTERS) power supplies. In addition, this design is also compliant with the latest computer requirements. DocID025877 Rev 2 For further information contact your local STMicroelectronics sales office 1/4 www.st.com R12 3M3 R7 3M3 3 2 1 MKDS 1,5/ 3-5,08 JPX4 SHORTED NM R15 SHORTED JPX11 C3 330nF F1 FUSE 4A R34 1Meg R18 56K C15 1u C9 100N C21 1uF 3 2 1 7 6 5 C19 2N2 4 R30 15K C25 220p R17 62K C2 2N2 C1 2N2 C26 22N PFC-OK TBO VFF CS MULT COMP INV U1 L6563S R8 47K GD RUN ZCD GND C201 4N7 PWM-LATCH 8 9 10 11 12 13 14 NM JP1 R4 680K VCC ~ D2 GBU4J PWM-STOP R9 NM D6 S07M C4 NM L1 HF2422-203Y1R0-T01 C20 2N2 _ R50 2K7 R33 6K8 R29 47K SHORTED JPX6 C5 470N - 400V C11 1nF C10 1nF D1 1N4005 C14 220N R21 330K R13 180K 3 6 R36 62K 1 JPX7 SHORTED C23 100N Q3 BC847C JPX3 SHORTED JPX9 SHORTED R25 470R R23 27R C22 22pF - 2KV C18 220nF JPX12 SHORTED D10 LL4148 D9 LL4148 8 5 L2 SRW25CQ-T05V102 R27 0R33 R16 NM C32 100N C6 100u - 450V R1 2R5 R26 1Meg R63 100K C38 330pF R62 4K7 SHORTED JPX8 C33 100u - 50V HS1 HEAT-SINK Q2 STF7NM50 D3 STTH2L06 JPX1 SHORTED R24 100K 0R0 R82 2 3 90-264Vac C40 10N R28 NM R6 NM R2 NM 8 7 6 5 4 3 2 1 R58 M57703 DIS CS VCC_PFC VCC GD GND N.C. HV U6 L6566A R59 12K C39 100N COMP VREF ZCD MODE/SC OSC SS VFF AC_OK D11 STTH102 9 10 11 12 13 14 15 16 R42 16K R35 8R2 Q9 NM C41 330pF C37 47pF C30 2N2 D16 LL4148 R74 NM JPX5 SHORTED R57 1K R70 NM C34 47N R37 10K R51 1K0 R46 33R D12 NM R19 9K1 R10 27K R11 2M2 R5 2M2 R3 2M2 JPX2 SHORTED R43 NM R52 0R47 R47 100K 1 HS2 HEAT-SINK 2 3 J1 D4A 1.5KE300A R53 0R33 Q5 STF7NM80 D8 STTH108A D4 NM R32 15K R31 43K 9 8 5 6 2 3 U3 SFH617A-4 R14 3R9 4 3 4 D7 STPS20H100CFP 1 2 D5 STPS20H100CFP 3 1 2 C8 1N0 T1 SRW32EC-T01H114 C24 2N2 10 11 18 17 16 15 HS3 HEAT-SINK C7 2N2 4 ~ DocID025877 Rev 2 1 + 2/4 3 R45 2K2 1000u - 25V C12 R66 3R9 R75 1K8 R48 4K7 1000u - 25V R76 4K7 C16 R78 560R R49 24K C44 1N R68 220K JPX10 SHORTED Q11 BC847C Q10 BC847C R77 100K R39 56K R80 1K8 D17 BZV55-B18 R67 12K R65 22K 4 3 2 1 U5 CV_OUT GND CC_OUT VCC C31 1N8 5 6 7 8 100u - 25V C13 TSM1014AIST C35 470N CV- CC+ CC- V_REF R69 1K0 R22 R015 R20 NM L3 TSL0709 - 1R5M4R3-PF R54 560K C43 2N2 C17 100N J2 2 1 C36 100N R55 22R 19V@4A MKDS 1,5/ 2-5,08 1 2 Schematic diagram STEVAL-ISA149V1 Schematic diagram Figure 1: STEVAL-ISA149V1 circuit schematic STEVAL-ISA149V1 2 Revision history Revision history Table 1: Document revision history Data Revision Changes 22-Jul-2014 1 Initial release 17-Jun-2016 2 Updated board photo on the cover page DocID025877 Rev 2 3/4 STEVAL-ISA149V1 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. 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