AS1337A-TD_EK_ST

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The AS1337A-TD_EK_ST is an evaluation kit that allows designers to evaluate the various features of the AS1337A, a single-stage, off-line SMPS, from ST. The kit includes the board itself, necessary external components, and documentation to get the board up and running quickly.

The AS1337A-TD_EK_ST is designed to work with the AS1337A, an integrated HV PWM controller that combines a high voltage PWM controller and a high voltage power MOSFET. The AS1337A is optimized for off-line ac-dc power conversion applications such as wall adapters, USB chargers, AC/DC adapters, and battery chargers. The integrated HV PWM controller offers high efficiency and accuracy, low EMI levels, and minimal external components for fast design cycles.

The AS1337A-TD_EK_ST application field includes single-stage off-line flyback, boost, SEPIC, and buck applications with a wide range of input voltages and load currents. The kit supports low-equivalent-series-resistances, ultra-low quiescent current autonomous actions, and wide Vin-Vout ranges. The board also supports over-voltage protection, over-power protection, and thermal shutdown.

In terms of working principle, the AS1337A-TD_EK_ST comprises three main components: the AS1337A primary side controller, the power MOSFET, and the power stage, all of which work together to transfer power from the AC mains to the output. The AS1337A is responsible for detecting the input voltage, generating the control signal for the switch, and controlling the output voltage. The power MOSFET is an n-channel device that is used to switch the power flow from the AC input to the output. The power stage is comprised of a transformer, inductor, and capacitor, and is responsible for the power conversion.

Overall, the AS1337A-TD_EK_ST is a comprehensive evaluation kit for the single-stage, off-line SMPS AS1337A that enables designers to quickly and easily evaluate the AS1337A’s features and performance. It is well suited for applications such as wall adapters, USB chargers, AC/DC adapters, and battery chargers. It allows for a wide range of applications with support for low-equivalent-series-resistances, ultra-low quiescent current autonomous actions, and wide Vin-Vout ranges, as well as over-voltage protection, over-power protection, and thermal shutdown.

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