HLG-185H-20B

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LED Drivers, commonly referred to as LED Power Supplies, are devices that regulate electricity through a specified range, resulting in its conversion into a constant voltage or current suitable for powering LEDs. LED Drivers for general illumination usually employ a switching regulator to provide DC voltage and current to light-emitting diodes or LED arrays. The HLG-185H-20B is designed for higher power LED lighting applications using a constant current operating regime.

The HLG-185H-20B can provide up to 18.5V and 20A well-regulated low-rippled output current when driven from industry standard input voltage levels (180-277 Vac, 50/60Hz). It is 95% power efficient, with a power factor of greater than 0.9, providing efficient and reliable control to drive LED applications. It features a wide operating temperature range of -40°C to +105°C, a high EMI absorption rating, and short-circuit detection/protection, making it a well-rounded device for powering LEDs.

The HLG-185H-20B is most suitable for applications in projectors, LED lighting, backlighting, power supplies, LED signage, and outdoor lighting. Its wide range make it particularly useful for low voltage fluorescent, LED, street-lighting, and other high-power installations. In addition, the device offers constant power control to provide continuous, smooth dimming and brightness control compatible with standard 0-10V, 10V PWM, and DALI protocols. It also provides quick dimming response, making it suitable for fast interconnects.

The working principle of the HLG-185H-20B revolves around the concept of an isolated form factor switching converter, referred to as an "off-line Switcher". An off-line Switcher operates on the premise of a dedicated high-frequency power source that contains the regulated power components and a control circuitry. The control circuitry is responsible for controlling the voltage and current of the output power, and is configured by the user via the provided dimming protocol. During operation, the input voltage and line frequency is compared against the adjustable output voltage and current limits. Once these values are matched, an output voltage and current is created with the help of the advanced power switching circuitry. Depending on the dimming protocol, the switching cycles are adjusted to obtain the desired result.

The Efficiency of the HLG-185H-20B is increased by its constant voltage/constant current design, allowing users to achieve and maintain a higher level of efficiency. Constant voltage / constant current switching results in ideal power delivery. This is ideal for light-emitting diodes and other applications requiring higher power levels as it increases the rate of energy conversion and ensures a smooth, consistent output. Furthermore, over-temperature protection, no-load protection, and under-voltage protection enhance the efficiency and reliability of the device.

The HLG-185H-20B is a reliable device capable of operating through extreme temperatures and offering stable operation up to 18.5V and 20A. Its advanced control circuitry, efficient power control systems, and wide temperature range makes it a great choice for various high-power LED applications, such as projectors, outdoor lighting, and street lighting. Its compatibility with several dimming protocols also makes it a good choice for those who require constant power control for various devices.

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