EVLVIP27L-12WS

Series:	VIPer™ plus
Part Status:	Obsolete
Main Purpose:	AC/DC, Primary Side
Outputs and Type:	--
Power - Output:	12W
Voltage - Output:	5V
Current - Output:	--
Voltage - Input:	85 ~ 265 VAC
Regulator Topology:	Flyback
Frequency - Switching:	--
Board Type:	Fully Populated
Supplied Contents:	Board(s)
Utilized IC / Part:	VIPer27

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IntroductionEVLVIP27L-12WS is a low-voltage, high-current, wide input voltage range, adjustable output voltage application evaluation board tailored to the development and evaluation of a wide range of applications such as laptop power systems. The boards have a wide input voltage range ranging from 8 to 20V and can supply up to 4.7A at high efficiency. Application FieldThis family of boards can be used in a variety of applications, with its main use in the laptop power systems. It has a wide input voltage range from 8V to 20V and is capable of supplying up to 4.7A at high efficiency levels. Applications requiring power output ranging from 5V to 19V are also suitable for this board. The board can also be used as a reference design for users to develop and evaluatine critical regulator functions, including protection circuitry, output voltage and current programming and loop optimization. The EVLVIP27L-12WS is also an ideal candidate for a wide range of medical applications. Its wide input voltage allows the board to be used in a variety of environments, including applications in which the input voltage may fluctuate due to a mains supply that is only slightly regulated.Working PrincipleThe EVLVIPS27L-12WS application evaluation board uses a synchronous rectifier converter topology, similar to that used in the laptop power systems, to achieve high efficiency levels at the outputs. The switching elements are implemented in the form of MOSFETs and a current mode controller for the switching instead of a voltage mode controller, allowing for accurate control of the output over wide input and load range. The evaluation board utilizes dual loop control circuitry, with a voltage loop and a current loop, which along with the current mode controller, ensure a smooth and efficient output voltage.The output voltage is adjustable via the current programmed into the reference pin of the current mode controller. The thermal protection circuit ensures maximum safety of the load and components in the event of an overload, while the synchronous rectifier converter topology minimizes conduction losses, allowing for high efficiency levels. ConclusionThe EVLVIP27L-12WS application evaluation board is an ideal candidate for a wide range of applications including laptop power systems, medical applications, and other applications requiring high efficiency, stability, and accurate output voltage control. It utilizes a synchronous rectifier converter topology to achieve high efficiency levels or require maximum power savings in the most portable and energy efficient applications. It is also designed to allow ease of customization and modification to suit user\'s needs and intended application. The board is suitable for a wide range of input voltages and can achieve an output voltage range of 5V to 19V, allowing for application flexibility and scalability.

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