ACT88320EVK1-101

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The ACT88320EVK1-101 is a power integrated circuit system evaluation board specifically designed for use with the ACT88320 synchronous, step-down, multiphase power module. The ACT88320EVK1-101 is an easy to use evaluation board that allows users to quickly test and evaluate the performance and capabilities of the ACT88320. The evaluation board provides a complete power solution for a range of applications including high-current, non-isolated DC-DC synchronous step-down regulators, high-efficiency offline AC-DC power supplies and lighting applications where rapid power conversion is required. The ACT88320EVK1-101 also provides users with the flexibility to configure and change the power regulation parameters to suit their particular application.

The ACT88320EVK1-101 is an off-line, AC/DC power supply evaluation board rated at 12A that provides a wide output voltage range of 0.7V-18V. The power module is a synchronous, multiphase, step-down regulator designed to offer peak efficiency of greater than 94%. The evaluation board is optimized for a nominal input voltage of 12V, but can be reconfigured for different input voltages by changing the external components. The ACT88320EVK1-101 includes a complete protection suite and the power module includes internal over temperature, over current and over voltage protection.

The power module is a synchronous buck regulator consisting of two power stages. The first stage consists of N-channel MOSFETs connected in parallel, with one MOSFET acting as a synchronous rectifier and the other as a freewheeling diode. The second stage is an emitter-coupled pair of P-channel MOSFETs connected in series. An internal synchronous oscillator controls the gates of both stages to synchronize the switching frequency with the output voltage and current. The internal oscillator can be synchronized externally to reduce output voltage ripple.

The ACT88320EVK1-101 is configured to operate with a 2-phase power supply. Each phase consists of two MOSFETs connected in parallel, driven by a single pulse-width modulator (PWM) controller. The board features an onboard fan to ensure efficient cooling of the components. The evaluation board includes a voltage regulator, oscillator, temperature monitor and indication LEDs. The evaluation board has an adjustable output voltage setting, enabling users to fine-tune the output voltage and current to suit their particular application. This feature allows users to configure the power supply to suit the application without needing to replace external components. The ACT88320EVK1-101 also includes a protection suite that prevents short-circuit, over-current and over-temperature conditions.

The ACT88320EVK1-101 is a high-efficiency, cost-effective way to evaluate the performance of the ACT88320 synchronous, step-down, multiphase power module. The onboard items and flexibility to configure the parameters ensures that users can quickly and easily test and evaluate power solutions for various applications. It is a great evaluation board for the development and testing of high-current, non-isolated DC-DC synchronous step-down regulators, high-efficiency offline AC-DC power supplies and lighting applications.

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