PI3740-00-EVAL1

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The PI3740-00-EVAL1 evaluation board is designed to evaluate the performance of the PI3740-00, a two-stage, 100 kHz, single-channel, isolated DC/DC controller IC from Power Integrations. The board is suitable for a wide range of applications in the field of DC/DC and AC/DC (off-line) switch-mode power supplies (SMPS).

The PI3740-00 is a high-performance current-mode control IC with an integrated power MOSFET for single-channel flyback applications. It incorporates an adjustable gate driver and is suitable for both continuous current mode (CCM) and discontinuous current mode (DCM) operation, allowing for smooth transitions between the two modes. The PI3740-00 also features an adaptive voltage positioning (AVP) loop for improved light load efficiency and an adjustable transition frequency for power-saving control of switched output power.

The PI3740-00-EVAL1 evaluation board is equipped with a variety of features to enable evaluation of the PI3740-00’s performance in various topologies and configurations. These features include an adjustable gate driver that supports both 6V and 12V drive capability, electronic fuses for monitoring output current and measuring power consumption, and a variety of output connectors that allow for connectivity to both AC and DC systems.

The PI3740-00-EVAL1 is designed to be compatible with the PI3740-00 SMPS controller IC, which offers a wide range of adjustable settings for fine-tuning the power supply’s performance. Included in the package is an example circuit which shows the configuration and settings needed for a basic flyback SMPS design. With these settings and the adjustable parameters of the PI3740-00, designers can quickly and easily build and evaluate a highly efficient, cost-effective power supply solution.

The PI3740-00-EVAL1 evaluation board’s operating principle is based on the principle of a switched-mode power supply (SMPS). SMPS is a type of power supply that uses a semiconductor switching device to regulate the voltage of the power supply to the required level. The switching device can be a power transistor, a thyristor, a FET or an IGBT. The output of the switching device is connected to a transformer, which is used to provide electrical isolation between the input and the output of the power supply. The transformer also steps up or steps down the output voltage depending on the requirement.

The PI3740-00-EVAL1 evaluation board uses the PI3740-00 controller IC to control the operation of the switching device. The PI3740-00 controller operates in either the continuous current mode (CCM) or the discontinuous current mode (DCM), depending on the load demand. The PI3740-00 compares a reference voltage with the sensed output voltage to generate a pulse-width modulated (PWM) signal to control the switching device. The IC also incorporates an adaptive voltage positioning (AVP) loop and an adjustable transition frequency for improved light load efficiency and power savings.

The PI3740-00-EVAL1 evaluation board is suitable for a wide range of AC and DC applications such as lighting, computer peripherals, medical equipment, instrumentation, and power control. It is a cost-effective, robust solution for switching mode power supplies that offers high efficiency, low component count and excellent system reliability.

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