STEVAL-ISA191V1 5 V - 12 V, 15 W double output isolated flyback converter based on VIPer37LE Data brief Description The STEVAL-ISA191V1 evaluation board implements an isolated flyback double output (5 V / 1.2 A and 12 V / 0.75 A) 15 W wide range mains developed for general purpose applications. The core of the application is the VIPer37LE, a new Off-line high Voltage Converter from the VIPerPlus family. The device is a high-voltage converter that intelligently integrates an 800 V rugged power MOSFET with PWM current-mode control. Features Universal input mains range: 85 – 265 VAC frequency: 50 – 60 Hz Output voltage1: 5 V / 1.2 A Output voltage2: 12 V / 0.75 A Very compact size Stand-by mains consumption: < 40 mW at 230 VAC Average efficiency: > 75% EMI: according to EN55022-Class-B RoHS compliant December 2015 The evaluation board features a small size, minimal BOM, high efficiency and low standby consumption. Extremely low consumption under no-load conditions is ensured thanks to burst mode operation that reduces the average switching frequency and minimizes all frequency related losses. VIPer37LE operates at 60 kHz fixed frequency. Frequency jittering is implemented to help meet electromagnetic disturbance standards, and the device implements several protections, including overvoltage, overload, output short circuit, secondary winding short, hard transformer saturation protection and brown out protection, for improved design safety and reliability. DocID028699 Rev 1 For further information contact your local STMicroelectronics sales office 1/4 www.st.com 2/4 RV 1.6 A FUSE DocID028699 Rev 1 2 1 R3 22k JUMPER 22nF C5 2 39k R6 1 12Vz 2 FB C15 Y1 2.2nF R10 100 R9 100 4.7k R8 22nF C7 GND 12V SFH6106-2T OPTO1 TS432 3 IC2 1.2k R12 STPS5H100B D6 1 Dz3 1.5nF C6 4 Dz2 18Vz 22nF CONT CONTROL DRAIN 9 8 7 TRANSFORMER VIPer37LE 2 10 9 8 7 6 3 BR VDD IC1 10 R4 BAT46ZFILM D2 4 3 1 3 47µF 50V C4 J3 5 180k R5 BAT46ZFILM D3 D1 STTH1L06 D5 STPS2H100A 4 C3 BAT46ZFILM D4 330pF 6 2 CON2 R7 1.8M R1 270k R18 T1 1 330 R2 1.8M 47µF 400V C16 2 12V L2 R14 68k R16 5V C10 2.2nF C9 220uF 180k 10nF C14 470k R13 C11 1200µF L1 2.2uH 2.2uH 330uF C8 R17 22k 330k R15 Dz4 12Vz R11 12k C12 2.2nF C13 5V 5 V 1.2 A 220uF 12V 12 V 0.75 A 12V 2 J1 1 CM Choke 2 100nF 2 F1 - 320V C1 + 3 1 4 3 C2 5 1 4 RMB6S BR Schematic diagram STEVAL-ISA191V1 Schematic diagram Figure 1: STEVAL-ISA191V1 circuit schematic 1 2 1 1 GSPG3011151415SG STEVAL-ISA191V1 2 Revision history Revision history Table 1: Document revision history Date Version Changes 09-Dec-2015 1 Initial release. DocID028699 Rev 1 3/4 STEVAL-ISA191V1 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. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2015 STMicroelectronics – All rights reserved 4/4 DocID028699 Rev 1