The TET3200-12-069NA from Bel Fuse is a Front-End AC-DC Power Supply that converts an AC input voltage of 90-300 V to a DC output voltage of 12 V. It also accepts a DC input voltage of 180-410 V. This converter delivers an output power of 3200 W and has an efficiency of up to 95.41%. It is fully controlled by a digital signal processing (DSP) unit and incorporates a resonant soft switching mechanism and interleaved power trains to reduce component stress. This ensures improved system reliability and very high efficiency. This power supply also provides minimal linear derating with respect to the ambient temperature, which results in maximum power availability for use in demanding server, switch, and router applications. It also incorporates a power factor correction (PFC) stage that is controlled by a DSP algorithm to provide a unity power factor for high power efficiency.

This AC-DC power supply’s DC-DC stage uses soft switching resonant mechanisms in conjunction with synchronous rectification. This converter integrates an active OR-ing device on the output side to ensure no reverse load current and renders the supply useful for operation in redundant power systems. It is equipped with an I2C interface for full monitoring of the supply, such as voltage, current, power, and temperature. This interface can also be used for bootloading to update the firmware in DSP controllers. This RoHS-compliant converter is available in an enclosure that measures 555 x 69 x 40.5 mm.