STEVAL-ISA175V1

STEVAL-ISA175V1 9.4 W, 15 V-5 V-3.3 V, three output isolated flyback converter for smart meter and power line systems using the VIPER26HD Data brief Description The STEVAL-ISA175V1 evaluation board implements a three output isolated flyback specifically designed to supply the STCOMET smart meter and powerline communication system. The board is developed using the VIPER26HD offline high-voltage converter by STMicroelectronics. The device features an 800 V avalanche-rugged power section, PWM operation at 115 kHz with frequency jittering for lower EMI, current limiting with adjustable set point, on-board soft-start, safe auto-restart after a fault condition and low standby power. Features      Triple output voltage: 15 V @ 0.55 Arms (0.7 A peak), 3.3 V @ 200 mA and 5 V @ 100 mA Extended AC mains input voltage range: 90 VAC to 440 VAC Meets STCOMET smart meter and power line communication system specs EMC with EN55022, EN61000, EN61000-44, EN61000-4-5, EN61000-4-6 RoHS compliant The power supply provides 15 V @ 550 mArms (700 mA peak) to the power line modem (PLM) and the analog circuitry, a post-regulated 5 V @ 100 mA and a 3.3 V @ 200 mA supply through a dedicated DC-DC converter connected on the 15 V rail for digital circuitry and other low voltage parts. The power supply is designed to operate across an extended 90 to 440 VAC mains input voltage range to also be used with a phase-to-phase connection in a three-phase network. The board can be used in a stand-alone configuration or with the dedicated STCOMET development kit and the PCB layout is specifically designed to fit inside a real meter. April 2016 DocID029273 Rev 1 For further information contact your local STMicroelectronics sales office 1/5 www.st.com 2/5 2 16ohm NTC2 2A F1 1 2 1 1mH L1 C1 220nF-X1 16ohm NTC1 4 3 CM 10mH 1 2 C2 220nF C4 33uF C3 33uF 470uH R4 220k R3 220k R2 220k R1 220k DocID029273 Rev 1 D5 18V R7 47 C9 100pF COMP FB C6 100pF D6 SMA6J100A D2 100 R6 OPTO SFH610A C8 NC LIM D1 GND DRAIN 10 R8 MRA4007 STPS1150M R5 220k CONTROL VDD C7 10uF C5 1nF TF 2.2nF-YCAP C23 R14 22k STPS1H100A D4 STPS2200U D3 VIPER26HD IC1 750314352 rev1 C12 NC Vpre C25 220uF Ref TS432ILT 220k R10 L3 C11 100uF Vdc R13 12k R15 133k GND R11 NC +15V OUT IC2 LDK220M50R 22nF C14 C24 10uF INH IN 4.7uH OPTO SFH610A R9 470 C10 470uF Vdc Vpre R12 NC C13 3.3uF +5V GND C22 1uF +15V 1 AC AC BR DBLS208GRD L2 Schematic diagrams STEVAL-ISA175V1 Schematic diagrams Figure 1: Main PSU circuit schematic GSPG2704161040SG STEVAL-ISA175V1 Schematic diagrams Figure 2: Dedicate DC-DC for 3V3 rail circuit schematic IC3 PM6644 L4 Vdc R16 680k C15 2.2uF VIN SW EN GND TON BPY Vcc C16 2.2uF REF3 REF EP FB C17 100nF 3V3 47uF C18 22pF R17 11.5k C20 22uF C19 10nF C21 1uF R18 4.22k GSPG2704161050SG DocID029273 Rev 1 3/5 Revision history 2 STEVAL-ISA175V1 Revision history Table 1: Document revision history 4/5 Date Version Changes 29-Apr-2016 1 Initial release. DocID029273 Rev 1 STEVAL-ISA175V1 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. © 2016 STMicroelectronics – All rights reserved DocID029273 Rev 1 5/5