MAX16974EVKIT+

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The MAX16974EVKIT+ evaluation board from Maxim Integrated is a compact, offline flyback power supply solution that provides multiple isolated output voltage configurations. Its primary applications are in distributed power architectures, including 48V DC-DC regulation, isolated AC-DC regulated supplies, and dual-output power supply solutions. This evaluation board helps designers to quickly configure power architectures for their products and to do so without having to invest in additional components.

The MAX16974EVKIT+ is an isolated power supply solution for distributed power architecture applications. This evaluation board is based on a single-chip flyback converter that provides up to two outputs of regulated DC voltage ranging from 3.3V to 48V, with ±1% accuracy over a load range of . The board also provides an integrated power-factor correction (PFC) circuit. It supports power delivery from a source of +95 VAC to +265 VAC or +300 VDC.

The MAX16974EVKIT+ also includes additional features, such as adjustable soft-start, over-current protection, over-voltage protection, and an auto-standby mode. Additionally, it features an integrated secondary PWM controller for controlling the power MOSFET, support for fan speed control, and flexibility for future design changes. The board is also compatible with a wide range of output power loads, ranging from a few watts to more than 200W.

The main components included in the MAX16974EVKIT+ evaluation board include a power supply module, which is based on the MAX16974 IC, and a series of support components. The power supply module features an input of +95V AC to +265Vac or +300Vdc, which can power up to two outputs of +5Vdc to +48Vdc with a high efficiency of up to 90%. The power supply module also utilizes a 1.7µH/100nF LC filter in the input stage, and a 4.7µH/240nF LC filter in the output stage, to ensure high efficiency and high-performance operation.

The MAX16974EVKIT+ supports two on-board power MOSFETs, one for primary switching and the other for auxiliary or standby switching. The MAX16974 IC also includes an integrated IC driver for controlling the power MOSFETs. Additionally, the integrated IC driver supports external sensing of the output voltage and current by providing it with an isolated connection to the output of the power supply module.

The main benefit of the MAX16974EVKIT+ evaluation board is that it enables the user to quickly and convenientlyconfigure a power architecture for the application in question. This is possible due to the integrated features included in the MAX16974 IC and the on board support components provided by the evaluation board. Furthermore, the evaluation board offers flexibility through several parameters, such as the soft start time, the frequency, the maximum peak current limit, the output voltage, the current limit, the maximum duty cycle, and the output power adjustment.

The MAX16974EVKIT+ provides users with high performance and reliability in AC/DC and DC/DC power supplies. Its easy-to-use configuration, coupled with its integrated features and on-board support components enables users to quickly and reliably implement the power architecture for their application. This evaluation board is also highly efficient, with an efficiency rating of up to 90% and a wide range of output power loads.

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