AS1339-BWLT

AS1339-BWLT Application Field and Working Principle

The AS1339-BWLT Voltage Regulator is a specialized device mainly used for LED lighting and LED display applications. It is a buck-boost regulator that ensures stable voltage and current supply to the LED, regardless of variations of the line voltage. It is specifically designed for LED drivers powered by AC line voltages with a wide range from 85V AC to 265V AC input voltages. The regulator will start operating from a low power level and will increase to the predicted power level when the voltage input reaches the desired level. This device also has the capability to limit current overaccuracies and power loss.

Device operation Overview

The AS1339-BWLT Voltage Regulator operates using the concept of buck-boost. It is designed to collect electrical energy from the AC line voltage and then convert it into the optimal power levels required to power the connected LED lights. This Energy is then directed to the output under constant voltage, constant current, and constant power voltage regulation. The device also is equipped with an integrated overvoltage protection for the output.

Input Stage

The input stage of the AS1339-BWLT Voltage Regulator consists of a bridge rectifier, filter capacitor, and an opto-coupler. The bridge rectifier is used to convert the AC voltage into unregulated DC voltage. Then the filter capacitor acts as a noise filter by absorbing the high frequency noises and ensuring that only the desired direct DC voltage is available as the input to the device. Then the opto-coupler is used to give the device support for AC input power frequency detection and to provide it with a low-voltage bootstroke.

Control PWM Stage

The Control PWM stage consists of the main control IC, which together with the opto-coupler, enables the power factor correction and the constant current ability. This stage includes the pulse-width modulation (PWM) control and the rectification of the input voltage. The PWM control is used for the power factor control and the constant current control, while the rectification function is used to reduce the input voltage ripple.

Power Stage

The power stage of the device includes the power transistors, which are used for power conversion, the power inductors for power stabilization, and the output filter capacitor for noise reduction. The power transistors are used to control the output current, while the power inductors are used to smooth out the pulsating DC output and provide a stable output current. Finally, the output filter capacitor helps to filter any high-frequency noises generated by the power transistors.

Benefits & Applications

The AS1339-BWLT Voltage Regulator boasts a wide range of useful features, including an overload protection, constant current protection, and overvoltage protection. It is capable of controlling the output voltage and output current to ensure the maximum luminous flux of the LEDs. Due to its wide range of applications, the device is suitable for use in a variety of LED lighting and display applications, such as LED spotlights, LED street lights, LED downlights, and LED panels.

Conclusion

The AS1339-BWLT Voltage Regulator is a cost-effective device designed to provide a constant voltage and constant current supply to LED lights and LED displays. Thanks to its specialized features, such as the integrated overvoltage protection, the device is able to guarantee a stable and safe functioning under even the most challenging conditions. An extensive range of applications makes it suitable for a wide range of LED lighting and display designs.