LM53635AQEVM

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The LM53635AQEVM is an evaluation board (EVB) for the LM53635 offline switch-mode power supply (SMPS). It supports up to 40 watts in Offline or AC/DC topologies and is designed to provide high-efficiency power conversion from an AC mains input to an adjustable output up to 28V. The LM53635AQEVM integrates a wide range of features that make it suitable for a variety of applications such as lighting, telecom/networking, home/industrial automation, medical, and consumer. It can also be used as a reference design for other offline flyback or forward SMPS designs.

The LM53635AQEVM is built on Texas Instruments’ latest technology, the LM53635. This IC is a highly integrated SMPS controller that integrates a 700V power MOSFET, isolated current sense amplifier, oscillator, pulse width modulation (PWM) controller, voltage regulation loop (VRL) controller and LED driver. The integrated power MOSFET and current sense amplifier allow for efficient and accurate power conversion. Furthermore, the integrated oscillator and PWM controller provide high-precision, highly stable switching frequency.

LM53635AQEVM can operate in offline and AC/DC topologies, allowing flexible design and flexibility when powering a variety of loads. The LM53635AQEVM also features a variable output voltage of 3.3V to 28V, making it ideal for powering multiple non-interchangeable outputs. Additionally, this EVB supports up to 40W output power, further expanding its range of application. Furthermore, the EVB also includes an adjustable precise current limit and temperature protection.

The LM53635AQEVM application field includes lighting, telecom/networking, home/industrial automation, medical, and consumer. LM53635AQEVM\'s features, such as high efficiency, DC/DC & AC/DC topologies, variable output voltage, temperature protection, and large output power capacity, make it an ideal option for these applications. With its low external component count and simple layout, the LM53635AQEVM provides a cost-effective platform for evaluation and design.

The LM53635AQEVM supports a wide range of input voltages from 90VAC to 400VAC. With its wide operating range, the LM53635AQEVM can meet the needs of applications in various power grids, eliminating the need for an extra boost converter. Additionally, the EVB also includes features such as soft-start, scheme protection, LED indicator, and a wide operating frequency range of 50kHz to 600kHz.

The LM53635AQEVM’s working principle is based on its integrated power MOSFET and current sense amplifier. The integrated oscillator generates a fixed switching frequency, which divides the input wave into two phases, conduction and anti-conduction. The integrated power MOSFET conducts for the conduction phase and turns off for the anti-conduction phase to limit the DC current through the power switch. The current sense amplifier monitors the current flowing through the power MOSFET to control the conduction time. The output power is then adjusted accordingly.

In conclusion, the LM53635AQEVM is ideal for DC/DC & AC/DC (Off-Line) SMPS applications. Its integrated components and features make it an efficient and cost-effective solution for high-efficiency power conversion from AC mains input to adjustable output up to 28V. Moreover, the EVB also features temperature protection, adjustable current limit, LED indicator, wide operating frequency, and wide range of input voltage, making it a reliable solution for a variety of applications.

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