JAJSJC6A December 2021 – June 2022 TPS92623-Q1
In automotive lighting applications, thermal performance and LED diagnostics are always design challenges for linear LED drivers.
The TPS92623-Q1 device is capable of detecting LED open-circuit and LED short-circuits. To increase current driving capability, the TPS92623-Q1 device supports using an external shunt resistor to help dissipate heat as the following section, Thermal Sharing Resistor (OUTx and RESx), describes. This method provides a low-cost solution of using external resistors to minimize thermal accumulation on the device itself due to large voltage difference between input voltage and LED string forward voltage, while still keeping high accuracy of the total current output.