STEVAL-ISA193V1 STMicroelectronics

S T E VA L - I S A 1 9 3 V 1 15 W, 5 V - 3 A output CC primary sensing USB adapter based on STCH02 Data brief Description The STEVAL-ISA193V1 evaluation board implements a 15 W USB adapter with primary sensing CC feature, based on the STCH02 current mode controller designed for offline quasi-resonant flyback converters, capable of providing constant output current (CC) regulation using primary-sensing feedback. The IC embeds a 650 V, non-dissipative, HV startup cell, which, along with the extremely low quiescent current and burst-mode management, helps minimize residual input consumption, thus achieving less than 10 mW under no-load conditions. The adapter is designed to meet the most stringent energy saving recommendations (EuCoC rev. 5 Tier 2 and EPS of DOE USA) as well as EN55022-Class-B Conducted noise emissions. Features The extremely small form factor and the output Universal AC Main Input voltage range : 90 USB connector makes this reference design V to 264 V AC AC suitable for small USB chargers and adapters for Output range: 5 V - 3 A continuous operation mobile phones, tablets and other hand held Constant voltage (CV) and constant current equipment. (CC) operation with CC primary sensing Input power in standby < 10 mW at 230 V AC Average efficiency: > 81.84%, complies with EuCoC rev. 5 Tier 2 and EPS of DOE USA EMI: According to EN55022-Class-B Small form factor: (44 x 35 x 15 mm) RoHS compliant August 2016 DocID029594 Rev 1 1/6 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagrams STEVAL-ISA193V1 1 Schematic diagrams Figure 1: STEVAL-ISA193V1 circuit schematic main PSU GSPG2507161330SG 2/6 DocID029594 Rev 1 TF L1 7508111123 rev. 6A D3 5V-3A 470 uH FERD30S50DJF F1 BR AC IN C3 R1 C1 C2 1nF 220k C9 C7 C8 2A 12uF 12uF 1uF 560 uF 560 uF NTC AC IN R2 220 20 D1 MRA4007T3G GND D2 R3 BAT41ZFILM 3 C12 C4 R9 100pF 22uF 1k IC1 R4 STCH02 100k Q1 STD7N80K5 VDD HV R8 OPTO R10 2.5V CURRENT SFH610A-2 12k R11 GD CONTROL 130k 10 ZCD C10 SENSE FB GND R13 R5 82k 10nF 24k C6 33nF R7 R15 IC2 C5 0.47 3.3 TS432 R14 2.2nF OPTO1 56k R12 R6 30k 43k SFH610A-2 C11 2.2nF