Are you looking for an efficient and reliable solution for your 35W AC/DC power conversion needs? Look no further than the EVL6562A-35WFLB evaluation board!

The EVL6562A-35WFLB is a compact and flexible board that features STMicroelectronics' advanced PWM controller for high-performance flyback converters. The board is specifically designed to help developers and designers test and evaluate the EVL6562A chip and its related components, such as MOSFETs, transformers, resistors, and capacitors, in various configurations and operating conditions.

In this blog post, we will provide an overview of the EVL6562A-35WFLB board, its features and benefits, and how it can help you accelerate your power conversion projects. We will also cover some practical tips and tricks for using the board effectively and optimizing its performance.

The EVL6562A-35WFLB Board: Overview and Specifications

The EVL6562A-35WFLB board features a single-layer design with optimized layout and signal routing for maximum performance and reliability. The board measures 42 x 42 mm and can operate at a wide range of input AC voltages (85-265 VAC) and frequencies (45-65 Hz). The board is rated for a maximum output power of 35 W and can deliver up to 2.5A of output current.

The board is equipped with a number of key components that enable it to perform efficient and accurate power conversion. These include:

The EVL6562A integrated PWM controller, which supports primary-side regulation (PSR) for simplified design and reduced BOM costs

A high-voltage gate driver and a bootstrap diode for controlling the MOSFET switch

An auxiliary supply for powering the controller and the driver

A snubber circuit for reducing switching losses and improving EMI performance

A feedback network for regulating the output voltage and compensating for loop stability

The board also includes a number of test points, jumpers, and connectors that allow you to customize the board's configuration and interface it with external equipment. These include:

A variable resistor (potentiometer) for adjusting the output voltage

A capacitor bank for filtering the input and output signals

A current sense resistor for measuring the output current

A thermal pad for dissipating heat from the MOSFET and the transformer

A USB port for connecting the board to a PC and using STMicroelectronics' eDesignSuite software for simulation and analysis

The Benefits of Using the EVL6562A-35WFLB Board

The EVL6562A-35WFLB board offers a number of benefits that make it an ideal tool for power conversion design and development. These include:

Easy evaluation and testing: The board provides a plug-and-play solution that allows you to quickly set up and test various circuit configurations and operating conditions. You can easily modify the board's components and parameters using the jumpers and test points, and observe the results using a multimeter or an oscilloscope. This can save you a significant amount of time and effort compared to designing a custom board from scratch.

High efficiency and reliability: The EVL6562A chip and the related components used in the board are optimized for high efficiency and reliability, thanks to their advanced features such as PSR, low quiescent current, and integrated protections (short-circuit, overvoltage, overcurrent). The board also features a number of safety features such as reinforced insulation and compliance with international standards (EN60950, UL60950).

Versatile and scalable design: The board's design is highly flexible and can be easily customized and scaled up or down to meet different power and voltage requirements. The board can also be used as a reference design or a starting point for developing more complex and sophisticated power converters.

Tips and Tricks for Using the EVL6562A-35WFLB Board

To help you get the most out of the EVL6562A-35WFLB board, here are some practical tips and tricks:

Use the eDesignSuite software: STMicroelectronics' eDesignSuite software is a powerful and user-friendly tool that can help you simulate and optimize your power conversion design. The software allows you to input your board's specifications and constraints and obtain a variety of performance metrics, such as efficiency, power dissipation, and transient response. The software also provides you with a schematic and layout editor that you can use to design your custom board based on the EVL6562A chip.

Pay attention to the thermal performance: The EVL6562A-35WFLB board can get quite hot, especially if you're operating it at high input voltages and currents. To ensure proper thermal management, make sure to use a heat sink or a fan to dissipate the heat from the board. You can also adjust the duty cycle and the switching frequency of the PWM controller to reduce the heat generated by the MOSFET and the transformer.

Optimize the snubber circuit: The snubber circuit is a critical component that helps to reduce the switching losses and improve the EMI performance of the board. To optimize the snubber circuit, you can experiment with different values of the snubber capacitor and the snubber resistor and measure the results using an oscilloscope. You can also add a ferrite bead or a common-mode choke to further suppress the EMI emissions.

Conclusion

In this blog post, we have reviewed the EVL6562A-35WFLB evaluation board and its features and benefits for power conversion design and development. We have also provided some practical tips and tricks for using the board effectively and optimizing its performance. If you're looking for an efficient, reliable, and versatile solution for your 35W AC/DC power needs, the EVL6562A-35WFLB board is definitely worth checking out!