STEVAL-ISA178V1 STMicroelectronics

S T E VA L - I S A 1 7 8 V 1 5 V / 200 mA high voltage buck-converter based on VIPer01 Data brief Applications Topology: buck Input power consumption: Less than 20 mW 230 VAC under no- load condition Less than 400 mW 230 V with 250 AC mW load Input voltage: 85 - 265 V AC 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 flux- runaway Dimensions: 29 mm x 30 mm Features Description Five-star energy efficiency for operation under no load (P < 20 mW 230 IN no load STEVAL-ISA178V1 is a compact and efficient VAC) solution for AC-DC power supplies, and performs Meets ErP Lot 6 Tier 2 requirements for voltage conversion from the main line down to 5 household and office equipment V output voltage. Compliant with the 10% load efficiency and The low current consumption of the VIPer01 and 4-point average active-mode efficiency its low VCC voltage allows extremely low input targets prescribed by the European CoC ver. power consumption under no load and light load 5 Tier 2 conditions. Meets IEC55022 Class B conducted EMI The pulse skip feature embedded in our IC even with reduced EMI filter, thanks to the reduces the peak current typically present during frequency jittering feature the startup phase of a buck converter. VIPer01 800V avalanche rugged technology and embedded protections ensure enhanced system reliability RoHS compliant September 2016 DocID029130 Rev 2 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagram STEVAL-ISA178V1 1 Schematic diagram Figure 1: STEVAL-ISA178V1 circuit schematic VIPer 01 GSPG1803161245SG 2/4 DocID029130 Rev 2 IC1 Daux BAT41ZFILM 5 4 COMP FB 3 DIS 6 2 Drain Vcc 7 Drain D0 D1 L1 8 R1 Drain C8 9 1 D4 Drain GND 220nF 1mH 10 STTH1L06A 22 Drain OUT MRA4007 MRA4007 L2 VIPer013XS 1 2 2 IN 1mH 1 C1 C2 1 + + D5 C9 Rbl 2 STTH1L06A 5.6k 2.2uF 400V 2.2uF 400V 100uF 16V Rubycon ZHL C3 + R4a 2.2uF 56k C4 100nF R4b 22k C5 R3 C7 R2 22k not mounted 2.7k 1nF C6 not mounted