STEVAL-SMACH15V1 STMicroelectronics

STEVAL-SMACH15V1 Data brief 15 W 5 V output USB adapter evaluation board with STCH03 CC-mode primary sensing switching controller Features Universal AC Main Input voltage range: 90 V to 264 V AC AC Output range: 5 V-3 A continuous operation Constant voltage (CV) and constant current (CC) operation with CC primary sensing Output overvoltage and short-circuit protection Input power in standby <15 mW at 230 V AC Intelligent power management to maximize efficiency over entire output power range Compliant with stringent energy regulations EMI: According to EN55022-Class-B Small form factor: 44x35x15 mm Description The STEVAL-SMACH15V1 USB adapter evaluation board is based on the STCH03 offline PWM controller for low standby adapters. The controller can provide constant output current (CC) regulation using primary sensing feedback. The device combines a high-performance low-voltage PWM controller chip and a 650 V HV start-up cell in the same package. It also features extremely low quiescent current and burst-mode management. These features help minimize residual input consumption to less than 15 mW under no-load conditions. The device offers output overvoltage protection (OVP) and over-temperature Product summary protection (OTP). It also offers Hiccup-mode protection for when the transformer USB adapter saturates or the secondary diode fails short, and an output UVP protection that limits evaluation board STEVAL- the average output current when an output short circuit occurs. based on STCH03 SMACH15V1 offline PWM controller The adapter satisfies energy saving recommendations (EuCoC rev. 5 Tier 2 and EPS of DOE USA) and EN55022-Class-B Conducted noise emissions. Offline PWM controller for low standby STCH03 The small form factor and the output USB connector renders the design suitable for adapters small USB chargers and adapters for mobile phones, tablets and other handheld equipment. Power Application category management DB3654 - Rev 1 - June 2018 www.st.com For further information contact your local STMicroelectronics sales office.STEVAL-SMACH15V1 Schematic diagram 1 Schematic diagram Figure 2. STEVAL-SMACH15V1 evaluation board schematic TF L1 7508111123 rev. 6B D3 5V-3A 470uH FERD20U50DJF F1 BR AC IN C3 R15 R1 1nF C1 C2 24k 220k C9 C7 C8 2A 12F 12F 1F 560F 560F NTC AC IN R2 R16 220 24k 20 D1 MRA4007T3G GND D2 R3 R17 33 BAT41ZFILM 3 C12 C4 R9 VDD 100pF 22F 100 VDD IC1 C13 R4 C14 STCH03 100pF 100nF Q1 130k VDD STD7N80K5 HV R8 OPTO R10 2.5V + CURRENT SFH610A-2 12k R11 GD CONTROL 130k - 10 ZCD R18 NC FB GND SENSE C10 R13 R5 27k 1M 12nF C6 330nF R7 R14 C5 0.47 3.3 IC2 220pF OPTO R6 TS432 R12 3.3k 43k SFH610A-2 C11 2.2nF DB3654 - Rev 1 page 2/5