Current - Output (Max):	62.5A
Approvals:	CE
Minimum Load Required:	Yes
Mounting Type:	Chassis Mount
Features:	Adjustable Output, DC Input Capable, PFC, Remote On/Off, Remote Sense, Standby Output, Universal Input
Operating Temperature:	0°C ~ 70°C (With Derating)
Efficiency:	83%
Voltage - Isolation:	3000V
Applications:	ITE (Commercial)
Power (Watts):	750W
Series:	SMR
Voltage - Output 4:	--
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	12V
Voltage - Input:	90 ~ 264 VAC
Number of Outputs:	1
Type:	Enclosed
Part Status:	Active

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SMR800PS12 application field and working principle

Introduction

Power supplies are used everywhere to regulate the input voltage in order to provide precise and stable voltage output. To fulfill the need of voltage adjustment, a wide range of AC-DC and DC-DC converters are developed for different levels of power-management requirement. Among them, the SMR800PS12 belongs to the AC DC Converters and was developed particularly for powering very low power lights, such as LED’s, as well as other low power devices. This article provides an overview of the application field and working principle of the SMR800PS12.

Application Fields of SMR800PS12

The SMR800PS12 is a high efficiency (up to 98%) and low ripple/noise (<50mV) AC/DC converter module, designed to generate adjustable or fixed outputs from a wide AC input range of 85~264VAC. It offers overload, over voltage, and short circuit protection; as well as output adjustment in 1V increments from 4.2V to 29V through an external potentiometer and soft start feature. Its low cost, small size and high efficiency make it ideal for designs requiring reliable, inexpensive and secure power supply for low power lighting applications such as LED’s or other low power consuming devices.The SMR800PS12 is also suitable for a wide range of other applications, including high-end audio streaming equipment, heating systems, water filtration systems, HVAC (Heating, Ventilation, and Air Conditioning) and AV (audio and video) equipment, just to name a few.

Working Principle of SMR800PS12

The SMR800PS12 employs a flyback topology, in which the primary side generates a sinusoidal waveform and the secondary side converts the energy into different voltage outputs. The primary and secondary side consists of inductors, transformers, capacitors, regulating coils, and switching elements. The converter is controlled by an IC which monitors the output of the power and makes sure that the input and output voltages remain within a certain range.When a loading is connected to the output of the unit, the IC monitors the output voltage and alters the switching frequency of the primary side of the converter accordingly. When the load connected to the power supply is too low the switch is closed for a longer period of time to avoid overloading, while if the load is too high then the switch is closed only for a short period of time.The input voltage to the SMR800PS12 is stepped down by the transformer, and the rectifier bridge further transforms the voltage to DC voltage. The filter capacitor at the output of the rectifier bridge smoothens the waveform and produces a ripple free DC output, while the output regulator regulates the voltage so that it can be used as desired.

Conclusion

The SMR800PS12 is a power supply module that belongs to the AC DC Converters family and was designed particularly for providing very low power lighting, such as LED’s, as well as other low power consuming devices. It has a wide range of applications, including audio and video equipment, HVAC systems, water filtration systems, lighting systems and more. The basic working principle of this unit is Flyback topology, which involves a primary side generating a sinusoidal waveform and the secondary side converting the energy into different voltage outputs. The input voltage is stepped down by the transformer and the rectifier bridge further transforms it to DC voltage. The filter capacitor smoothens the waveform and the output regulator regulates the voltage.

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