HVLED807PF

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The HVLED807PF is a high voltage LED driver from NXP’s portfolio of LED drivers for automotive lighting, signage, and general lighting applications. It is a four-channel, high-efficiency, high-current LED driver for forward- and reverse-voltage outputs. Its robust design allows for automated and reliable operation, combined with a wide range of protection features, and is available in either a standard or automotive grade to meet the needed environmental requirements.

Generally, the HVLED807PF is used in automotive lighting applications as it provides four channels of up to 400mA per channel in either a forward or reverse direction, giving designers wider selection in conducting designs. It can also be used in signage applications due to its highly efficient operation, allowing it to operate with high-efficiency while providing protection against thermal runaway. For general lighting applications, the HVLED807PF is also exceptionally useful as it has a wide dynamic range, allowing for linear control of LEDs and excellent dimming control.

At a closer look, the HVLED807PF features very flexible control capabilities, allowing for dimming control down to 0.1%, linear current control, and a wide dynamic range. It also features a constant current mode of operation guaranteeing stable brightness of high power LEDs, in additional to high efficiency due to its synchronous rectification and integrated power switches. In addition, the device provides protection against a wide range of different conditions, such as input undervoltage lockouts, thermal shutdowns, and open circuit and short circuit protections.

In terms of its working principle, the HVLED807PF has an integrated half-bridge circuit consisting of two N-channel Metal Oxide Semiconductor Field Effect transistors (MOSFETs). The two transistors are controlled by a PWM signal to regulate the amount of current that is sent through the bridge, enabling dimming operations as desired. The supply current also influences the amount of current sent through the bridge and the dimming set point.

In conclusion, the HVLED807PF is an excellent solution for automotive lighting, signage, and general lighting applications as it features flexible control, high efficiency for low energy losses, and wide range of protections against different conditions. Its half-bridge circuit enables the device to provide dimming control as desired, and provides stability and reliability to ensure that it operates within its given parameters.

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