ISL6522EVAL1

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ISL6522EVAL1 is an evaluation board intended for evaluation and demonstration of Isoloop digital isolated DC/DC point-of-load power converter. ISL6522EVAL1 consists of an ISL6522POWR dual phase synchronous buck controller with a 2A/22V direct input, and a synchronous rectified 6.7V, 2A output, making it ideal for high-power, high voltage applications in industrial, automotive, and telecom applications. The board also includes on-board precision load regulation, over-current and over-voltage protection, and adjustable gate drive voltage.

DC/DC & AC/DC (Off-Line) SMPS are switching mode power supplies (SMPS) that convert direct current (DC) or single-phase alternating current (AC) power to multiple phases of alternating current (AC) power. The conversion is done through a series of switching elements which when switched control the phases of the DC or AC power. This produces a multi-phase supply with a reduced ripple noise which is suitably filtered to create a stable output voltage.

The ISL6522EVAL1 application field is wide and varied, and is suitable for applications that require robust, high power, and efficient isolated DC/DC power conversion. This board is particularly well-suited for industrial, automotive, and telecom applications due to its high-voltage, high-power capabilities.

The working principle of the ISL6522EVAL1 is based on the Isoloop power regulator circuit. This concept uses two high speed N-channel MOSFETs that are alternately turned on and off to transfer energy from the input side to the output side. In between these two MOSFETs is an isolation transformer which ensures that no direct connection is made between the input and output side. This isolation helps to protect against short-circuits, reverse voltages, and miswiring, among other hazards.

The two MOSFETs are controlled by two Pulse Width Modulation (PWM) pulse trains that are generated by the onboard Isoloop controller. This controller modulates the current in the primary and secondary windings of the transformer, ensuring that the output voltage is regulated to the required setpoint. The ISL6522POWR controller ensures that current is efficiently transferred from the input side to the output side and that the current consumption is minimized on both sides.

The key benefit of the Isoloop power regulator design is its efficient power conversion, enabled by its integrated primary side regulation, secondary side synchronization, and primary side current regulation ability. It also features output side hysteresis loop control and protection (including under-voltage, over-current, and over-voltage protection), variable on-time pulse width modulation, adjustable switching/gate drive frequencies, and adjustable gain/slew rate for maximum design flexibility.

The ISL6522EVAL1 is an ideal solution for industrial, automotive, and telecom applications that require high-power and high-voltage isolated DC/DC power conversion. Its efficient Isoloop power regulator design ensures power is delivered with minimal current consumption for maximum efficiency. Its robust protection mechanisms protect against short-circuits, reverse voltages, and miswiring, among other hazards. All these features make the ISL6522EVAL1 an excellent choice for designers in these application fields.

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