DC1367A

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The DC1367A evaluation board from Texas Instruments is a compact, isolated AC/DC module designed to provide a power supply solution for evaluating isolated DC/DC and AC/DC (off-line) SMPS circuits. The DC1367A incorporates a two-channel architecture, with each channel including an off-line PWM (pulse width modulation) controller, making it ideally suited for single-stage transformer based AC/DC (off-line) SMPS applications.

In AC/DC (off-line) SMPS applications, the AC source is rectified and filtered to provide a high-voltage DC bus. This DC bus is then supplied to an isolated PWM converter which provides regulated DC output(s). This type of circuit is widely used in consumer, industrial, and automotive electronics, for applications such as laptop adapters and lighting ballasts. The DC1367A incorporates best-in-class performance features, such as integration of rectified components into the evaluation board, and an optimized power stage, with realistic component parameters to enable the evaluation of unique designs and features.

Depending on the application, the DC1367A can be configured for unregulated, fixed-voltage (5V, 12V, or other), or adjustable-voltage (Vc-variable) operation. In all configurations, the evaluation board provides excellent efficiency, low AC current ripple, and good line and load regulation, across the full input voltage range. The DC1367A also features a wide range of protection functions, such as over-voltage, over-load, short-circuit, input over-voltage, and output over-temperature.

The DC1367A evaluation board is designed to be easy to use, with the connectors and components labeled clearly and located in a logical manner. The board is also well-documented, with a comprehensive user’s guide that provides an overview of the board’s architecture, assembly and setup instructions, as well as an explanation of the operating modes and protection features.

The working principle of the DC1367A is based on a two-channel architecture, where each channel is driven by a Pulse Width Modulation (PWM) controller. The first channel is an off-line converter, which converts an AC source voltage to a DC voltage. The second channel is a buck-type DC/DC converter, which uses the DC voltage from the first channel as its input voltage, and regulates it to a specified DC output voltage. The output of the second channel is supplied to the load.

The DC1367A evaluation board is mainly intended for applications in the AC/DC (off-line) SMPS product space, where it can be used to evaluate designs and features, simulate and troubleshoot individual components and subcircuits, and generate reference designs. The evaluation board is also suitable for use in a wide range of other applications, including power supplies for telecom systems, notebook adapters, and back-up systems.

In summary, the DC1367A evaluation board from Texas Instruments is a compact, isolated AC/DC module designed to provide a power supply solution for evaluating isolated DC/DC and AC/DC (off-line) SMPS circuits. The evaluation board incorporates best-in-class performance features, such as integrated components and optimized power stage, allowing for the evaluation of unique designs and features. Furthermore, the board is easy to use, thanks to clear labeling and comprehensive user’s guide. The DC1367A is ideal for applications in the AC/DC (off-line) SMPS product space, as well as in a wide range of other applications.

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