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Reference Designs

1-kW High Efficiency Digital Power Factor Converter (PFC) for Telecom/Server Power & Motor Drives

Texas Instruments

The TIDA-00477 reference design is a continuous conduction mode boost converter implemented using TI digital power supply controller UCD3138A and with all the necessary protections built-in. TIDA-00477 PFC is designed to improve overall system performance with lower bus ripple: lower bus capacitance: and lower RMS currents than traditional PFC power supplies. In addition: the design provides precise information of the input energy consumption of the unit. Hardware is designed and tested to pass conducted emissions: surge: and EFT as per EN55014 – requirements.

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Features

Wide operating input range 195-VAC to 270-VACDesigned to drive wide range of downstream DC/DC converters and inverter fed motors up to 1kWHigh power factor > 0.99 and less than 5% THD from medium-to-full load (50-100%). Meets Current THD regulations as per IEC 61000-3-2High efficiency of > 97% at full load over entire operating voltage range. It eliminates need for external cooling up to 55oC ambient operation for loads ≤ 850WCommunicates the input power consumption information of the unit precisely for all load conditions.Built-in 12V/3W supply for house-keeping power needsPMBUS & Isolated UART for communicationMeets the requirements of Conducted Emissions standard – EN55011 class A: EFT norm IEC6000-4-4: and Surge norm IEC61000-4-5Power supply designed with a simple: small PCB form factor (165 x 95mm)