STMicroelectronics 12 V - 210 W Adapter Based on STCMB1, Combo TM PFC & HB LLC AC-DC Converter for EVLCMB1-AIO210W for

The STMicroelectronics EVLCMB1-AIO210W demonstration board is a 12V - 210W converter, tailored for the typical specification of an AC/DC adapter for all-in-one systems with a wide input mains range very low power consumption at light load and good average efficiency. The architecture is based on a two-stage approach: a front-end transition mode PFC pre-regulator and a downstream LLC resonant half-bridge converter, the PFC and LLC controllers are both integrated into the STCMB1 combo IC. At the secondary side, synchronous rectification is implemented using SRK2001. The PFC section uses a proprietary constant-on time control methodology that does not require a sinusoidal input reference. The LLC section is based on a proprietary time shift control method that improves dynamic behaviour and input ripple rejection resulting in a cleaner output voltage.

• Average efficiency is > 90%, according to European CoC ver. 5 Tier 2 for external power supplies
• Efficiency at 250mW is > 60%, well above EuP lot 6 Tier 2 limit
• Mains supply voltage frequency ranges between 45Hz and 65Hz
• No load mains consumption is < 90mW, well below European CoC ver. 5 Tier 2 limit
• Output voltage is 12V at 17.5A continuous operation
• Overall efficiency at full load is above 90%, well above ENERGY STAR® 6.1 limit
• Universal input mains voltage ranges between 90Vac and 264Vac

• EN55022 Class-B
• EN60950 standards
• EN61000-3-2 Class-D
• JEITA-MITI Class-D