ISL78236DUALEVAL1Z

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The ISL78236DUALEVAL1Z is a dual-channel, high-performance DC/DC and AC/DC off-line switching mode power supply (SMPS) evaluation board. The board supports high-efficiency designs from 0.5V up to 16V. It offers an adjustable switching frequency and is also capable of parallel operation for high current/power applications. The evaluation board offers a wide range of features such as input and output voltage monitoring with an integrated precision OPAMP, output current monitoring with sense resistor, and fault conditions monitoring.

The ISL78236DUALEVAL1Z offers four key components which provide the basis of the DC/DC and AC/DC off-line switching mode power supply design. The first component is the controller, which controls the operation of the power supply by providing the switching signal for the MOSFET. The second key component is the power MOSFET, which is responsible for switching the voltage through the inductor. The third component is the inductor, which stores energy for a short period of time during the switching cycle. Lastly, the fourth component is a Schottky diode, which forwards current while the MOSFET is disabled.

The DC/DC and AC/DC off-line switching mode power supply design for the ISL78236DUALEVAL1Z typically involves controlling the conduction of a MOSFET using pulse width modulation (PWM) at a specified frequency. When the MOSFET is turned on, it carries current through the inductor, and when it is off, current continues to flow through the Schottky diode. This repeated current flow through the inductor creates a pulsed magnetic field that charges the output capacitor with the required voltage. The inductor then dissipates the energy stored in the current loops when it is released.

The evaluation board effectively allows users to implement power supply designs for a broad range of power requirements. With its adjustable switching frequency, users can optimize the design for noise, efficiency, and power conversion. Furthermore, this evaluation board supports fault detection and fault prevention features such as short circuit, over-temperature and over-current. The board also offers power GND reference pins, 0.1/1.0µF compensation bypass capacitors, phase compensation pins, load compensation on/off, and low output voltage protection.

The ISL78236DUALEVAL1Z evaluation board is designed to provide a comprehensive platform for power supply design and evaluation. It enables users to quickly and easily design and evaluate a wide range of power supply solutions, allowing them to evaluate the performance and characteristics of their designs with minimal effort. Because the board is designed for power supply evaluation, it does not come with the necessary EMI or thermal management enclosures, so users must either build their own EMI enclosures or buy them from a local supplier.

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