STEVAL-ISA178V1 5 V / 200 mA high voltage buck-converter based on VIPer01 Data brief Applications Features Five-star energy efficiency for operation under no load (PIN_no_load < 20 mW @ 230 VAC) Meets ErP Lot 6 Tier 2 requirements for household and office equipment Compliant with the 10% load efficiency and 4-point average active-mode efficiency targets prescribed by the European CoC ver. 5 Tier 2 Meets IEC55022 Class B conducted EMI even with reduced EMI filter, thanks to the frequency jittering feature VIPer01 800V avalanche rugged technology and embedded protections ensure enhanced system reliability RoHS compliant September 2016 Topology: buck Input power consumption: Less than 20 mW @ 230 VAC under noload condition Less than 400 mW @ 230 VAC with 250 mW load Input voltage: 85 - 265 VAC Output voltage: 5 V Output current: 200 mA Switching frequency: 30 kHz with jittering (7%) Max amb. temp: 60 C Automatic restart protections: OLP, short circuit, VCC clamp, max duty cycle counter, thermal shutdown Pulse-skip protection to prevent the fluxrunaway Dimensions: 29 mm x 30 mm Description STEVAL-ISA178V1 is a compact and efficient solution for AC-DC power supplies, and performs voltage conversion from the main line down to 5 V output voltage. The low current consumption of the VIPer01 and its low VCC voltage allows extremely low input power consumption under no load and light load conditions. The pulse skip feature embedded in our IC reduces the peak current typically present during the startup phase of a buck converter. DocID029130 Rev 2 For further information contact your local STMicroelectronics sales office 1/4 www.st.com 2/4 IN MRA4 007 DocID029130 Rev 2 2.2u F 400 V 2.2u F 400 V 2.2u F C3 + + C2 C1 + 1mH L1 FB C6 22 k R4b 1 2 3 4 C7 1n F R4a 56 k no t moun ted R2 2.7k GND Vcc DIS VIPer0 13XS Drain Drain Drain Drain Drain R3 no t moun ted 22 k C5 C4 10 0nF 6 7 8 9 10 VIPer_01 2 1 MRA4 007 D1 COMP 1mH L2 2 D4 STTH1L0 6A D5 C9 Rbl STTH1L0 6A 5.6k 10 0uF 1 6V Ruby con ZHL 1 C8 22 0nF Daux BAT41ZFILM 1 2 OUT 1 22 R1 D0 5 IC1 Schematic diagram STEVAL-ISA178V1 Schematic diagram Figure 1: STEVAL-ISA178V1 circuit schematic GSPG1803161245SG STEVAL-ISA178V1 2 Revision history Revision history Table 1: Document revision history Date Version Changes 24-Mar-2016 1 Initial release. 16-Sep-2016 2 Updated: cover page Title, Features and Description. Added Applications on the cover page. DocID029130 Rev 2 3/4 STEVAL-ISA178V1 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. (c) 2016 STMicroelectronics - All rights reserved 4/4 DocID029130 Rev 2