VOF-20B-S24

Power (Watts):	20W
Approvals:	CE, cURus
Load Regulation:	±1%
Line Regulation:	±0.5%
Size / Dimension:	2.33" L x 1.67" W x 0.90" H (59.2mm x 42.3mm x 22.9mm)
Package / Case:	4-DIP Module
Mounting Type:	Through Hole
Efficiency:	86.06%
Operating Temperature:	-25°C ~ 70°C (With Derating)
Features:	DC Input Capable, Universal Input
Applications:	ITE (Commercial)
Series:	VOF-20B
Current - Output (Max):	850mA
Voltage - Output 4:	--
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	24V
Voltage - Input:	85 ~ 264 VAC
Number of Outputs:	1
Type:	Open Frame
Lead Free Status / RoHS Status:	--
Part Status:	Active

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AC DC ConvertersModern electronic systems require a predictable, consistent power supply for reliable operation. For this purpose, AC/DC converters have become increasingly popular solutions to power up electronics from a single AC source. One such AC/DC converter is the VOF-20B-S24. The VOF-20B-S24 is an isolated flyback AC/DC converter designed to provide output of 24V DC from input AC supply. This AC/DC converter is suitable for a wide range of applications such as medical, industrial, and consumer product power supplies. The VOF-20B-S24 is a flyback topology AC/DC converter. It uses a single stage topology, which includes a power switch transistor, a step-down transformer, and diode rectifier. The components used in the VOF-20B-S24 also provide necessary isolation to the load and primary side circuit. The power switch transistor in the VOF-20B-S24 is a MOSFET. The MOSFET is controlled by a control IC that provides switching control signal. When the power switch is in the ON state, the transformer stores energy in its cores and generates a voltage with current flowing in the primary winding. When the switch is OFF, the energy stored in the transformer is transferred to the output as a pulse width modulated (PWM) signal. The PWM signal is fed to the rectifier diode which then rectifies the current and provides a steady DC output signal. The output voltage is regulated by the control IC as it adjusts the width of the PWM signal to keep the output voltage within a pre-defined range. The control IC also monitors the output voltage and limits the operation current to ensure safe operation of the device. The output capability of the VOF-20B-S24 is dependent on the output power rating. With maximum power rating of 20 W, the converter can provide an output voltage of 24Vdc with an efficiency of more than 80%. The converter is also capable of providing a maximum output current of 1.2A and an output voltage ripple of <200mV at an ambient temperature of 40°C. To ensure proper operation, the converter must be supplied with a rated line input voltage of 100-240VAC. The line input voltage must also be rated for a minimum current limit of 1.5A. The EMC of the converter is certified to EN55022 class B. The VOF-20B-S24 also supports low-wake up mode which makes it suitable for power control applications. The converter can also be used in active standby or burst mode operation where high start up current is required for a short duration. The VOF-20B-S24 is a reliable and versatile AC/DC converter with an excellent power efficiency. It is ideal for a wide range of applications including medical, industrial, and consumer product power supplies. With the added advantage of low-wake up mode, the VOF-20B-S24 meets the requirements of many power control applications. The VOF-20B-S24 offers many benefits and is suitable for applications that require a steady DC output from an AC source.

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