STMicroelectronics recommends a 4-layer PCB with a solid ground plane, and to keep the high-voltage traces as short as possible. Additionally, a shielded cable or a twisted pair should be used for the LED connection to reduce EMI.
To ensure reliability, it's essential to follow the recommended operating conditions, including the maximum junction temperature (Tj) of 150°C. Additionally, a thermal management system, such as a heat sink or a thermal pad, should be implemented to keep the device temperature within the recommended range.
While the datasheet doesn't specify a maximum dimming frequency, STMicroelectronics recommends limiting the dimming frequency to 1 kHz or lower to avoid potential issues with the device's internal oscillator and to ensure reliable operation.
To protect the device from overvoltage and overcurrent conditions, it's recommended to use a voltage regulator or a voltage limiter, as well as a current limiter or a fuse, in the circuit design. Additionally, a TVS (Transient Voltage Suppressor) diode can be used to protect the device from voltage spikes and transients.
The HVLED815PF is designed to work with LED strips that do not have built-in resistors. If the LED strip has a built-in resistor, it may affect the device's performance and reliability. It's recommended to use an LED strip without a built-in resistor or to add an external resistor to the circuit to ensure proper operation.
HVLED815PF datasheet
by STMicroelectronics
