EVL6699-150W-SR

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The EVL6699-150W-SR is an evaluation board for studying DC/DC & AC/DC (Off-Line) switching mode power supplies (SMPS) with a rated output power of 150W and ±15V with a full input range from 90V to 264V. This board offers proven circuit and design techniques for efficient power conversion while meeting both the European Union (EU) directives for harmonic current distribution over a wide range of input voltage and frequency. The EVL6699-150W-SR evaluation board can be used to study and evaluate the performance of the key components in a switching mode power supply including the power switch (MOSFET), inductor, and capacitors.

The design of the EVL6699-150W-SR board includes components that make it easy to operate and provide a high level of protection. It is rated for Class I/II operation with built-in thermal protection, over-current protection, short-circuit protection, and over-voltage protection. This board also includes an adjustable switching frequency and adjustable output voltage and current limit.

The working principle of the EVL6699-150W-SR evaluation board is based on the basic operation of a switching mode power supply. When the power switch (MOSFET) is turned on, current flow is allowed from the negative terminal of the input voltage (Vin) to the positive, forming an inductor-capacitor (L/C) energy storage network. The MOSFET is then turned off and the energy stored in the L/C network is released to the output via the diode rectifier, maintaining the output voltage at the programmed value while dissipating the surplus energy as heat.

The power density of the EVL6699-150W-SR evaluation board is further increased by the use of high efficiency synchronous rectification and primary side controls, such as eGaN FETS, to reduce power switching losses. The switching frequency has also been optimized to improve dynamic response and reduce electromagnetic interference (EMI) emissions.

In addition to its high power density, the EVL6699-150W-SR evaluation board also offers high power quality and low ripple/noise voltage. The input and output capacitors, together with the inductors, act as an active filter to reduce noise and provide good input/output signal integrity. The board is also designed to meet the harmonics current requirements of the European Union (EU) with high power factor and low total harmonic distortion (THD).

Overall, the EVL6699-150W-SR evaluation board is an ideal tool for studying and evaluating the performance of DC/DC & AC/DC (off-line) switching mode power supplies. It offers easy to use design features, high power density, high power quality, and a range of safety features to protect against over-voltage and over-current conditions. With its proven circuit and design techniques, this board can be used to develop reliable and efficient power conversion solutions.

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