NCP1612GEVB

NCP1612GEVB 160-W, Wide Mains, PFC Stage Driven by the NCP1612 Evaluation Board User's Manual http://onsemi.com EVAL BOARD USER’S MANUAL Introduction stage is intended to deliver 160 W under a 390 V output voltage from a wide mains input. This is a PFC boost converter as used in Flat TVs, High Power LED Street Light power supplies, and all-in-one computer supplies. The demo board embeds the NCP1612 B-version which is best appropriate for the self-biased configuration. The board is also configurable to have the NCP1612 powered from an external power source. In this case, apply a VCC voltage that exceeds the NCP1612B start-up level (18.2 V max) to ensure the circuit start of operation or solder the NCP1612A instead. The low VCC start-up level of the A-version (11.25 V max.) allows the circuit powering from a 12-V rail. Both versions feature a large VCC operating range (from 9.5 V up to 35 V). Housed in a SO-10 package, The NCP1612 is designed to drive PFC boost stages in so-called Current Controlled Frequency Fold-back (CCFF). In this mode, the circuit classically operates in Critical conduction Mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1612 linearly decays the frequency down to about 20 kHz when the current is nearly zero. CCFF maximizes the efficiency throughout the load range. Incorporating protection features for rugged operation, it is furthermore ideal in systems where cost-effectiveness, reliability, low stand-by power and high-efficiency are the key requirements. Extremely slim, the NCP1612 evaluation board is designed to be less than 13-mm high. This low-profile PFC Table 1. ELECTRICAL SPECIFICATIONS Description Value Units Input Voltage Range 90-265 Vrms Line Frequency Range 45 to 66 Hz 160 W 0 Adc Output Power Minimum Output Load Current(s) Number of Outputs 1 Nominal Output Voltage 390 Vdc Maximum Startup Time 10 ms Peak To Peak Low Frequency Output Ripple