HLG-240H-12

Voltage - Isolation:	3.75kV
Approvals:	CB, CCC, CE, cURus, PSE, RCM, TUV
Mounting Type:	Chassis Mount
Size / Dimension:	8.67" L x 2.68" W x 1.53" H (220.2mm x 68.0mm x 38.8mm)
Termination Style:	Wire Leads
Efficiency:	90%
Operating Temperature:	-40°C ~ 90°C
Ratings:	IP67
Features:	OCP, OTP, OVP, SCP
Dimming:	--
Series:	HLG-240H
Power (Watts):	192W
Current - Output (Max):	16A
Voltage - Output:	6 ~ 12 V
Voltage - Input (Max):	305VAC
Voltage - Input (Min):	90VAC
Number of Outputs:	1
Topology:	AC DC Converter
Type:	Constant Current, Voltage
Part Status:	Active

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Introduction

LED Drivers are an important component for many lighting projects, from bulbs to tubes and any applications which use LED lighting. The HLG-240H-12 is an LED driver which allows for adjustable output current and voltage to accommodate many different types of LED lighting. This article will provide a brief overview of the HLG-240H-12 application field and discuss its working principle.

Application Field

LED Drivers of this type are suitable for LED lighting which requires power inputs of 12V to 36V. Of particular use for the HLG-240H-12 is that it has a wide input voltage range for constant current, allowing it to accommodate different types of LED lighting and reduce flicker. So long as the total power of the input doesn’t exceed 80W, then the output current and voltage can be adjusted to maintain the total power from the 12V to 36V input. The HLG-240H-12 is suitable for LED lighting that requires dimming, as it is compatible with DALI and 0~10V dimming protocols. This, combined with the ability to adjust both output current and voltage, makes the HLG-240H-12 highly suitable for dimmable LED lighting.

Working Principle

The HLG-240H-12 works on the princple of a LED driver circuit which combines pulse-width modulation and voltage-regulator techniques. The driver consists of two parts, the input control circuit and the output power circuit. The input control circuit repairs the voltage according to the input voltage range, then the control circuit uses the pulse-width modulation technique. A PWM chip turns the voltage input into a square-wave whose duty cycle is corresponding to the voltage, and the voltage is maintained at the over-voltage protection level. The output power using a switch regulator supplys stable current and helps to reduce noise.

Conclusion

The HLG-240H-12 is an LED driver which can be used in a range of LED lighting applications. It has a wide input voltage range and is compatible with DALI and 0~10V dimming protocols, making it suitable for dimmable LED lighting. The driver offers adjustable output current and voltage which allows it to maintain the total power from an input of 12V to 36V. Its working principle combines both pulse-width modulation and voltage-regulator techniques and it consists of two parts, the input control circuit and the output power circuit. This article has provided an introduction to the HLG-240H-12 application field and discussed its working principle.

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