TPS92551TZX/NOPB

PMIC - LED Drivers have become an integral part of many electronic devices due to their ability to offer precise control of current and voltage when driving LEDs. Texas Instruments’ TPS92551TZX/NOPB is an example of one of these LED drivers that offers efficient and robust LED control. It is well suited for applications including LED strips, point-of-sale terminals, kiosks, sports lighting, LED signage, and LED stage lighting.

Features

The TPS92551TZX/NOPB LED driver is a buck-boost converter that has specific features for LED applications. To ensure accurate LED current and voltage regulation, it has an integrated current sensing shunt resistor that enables precise voltage accuracy during steady state and transient performances. It also has a wide input voltage range from 7V to 36V, and offers a wide output range of up to 34V with a current of up to 1.8A. It comes in a 10-pin "Green" Thin Shrink Small-Outline package (TSSOP™) that is 2mm tall and 2mm wide.

Working Principle

The TPS92551TZX/NOPB works by using PWM switching to provide constant current or constant voltage drive to the LED. It has an adjustable output voltage and current, allowing users to set their desired output current within the limits of the device\'s specifications. The device consists of two stages, an internal buck stage and an external buck-boost stage. The internal buck stage is used to reduce the frequency of the PWM switching and to reduce input current ripple, as well as to improve the power factor in the AC line. The external buck-boost stage is used to provide the required output voltage and current regulation.

Usage

The TPS92551TZX/NOPB is primarily used to drive high-power LEDs and has been designed to support high input and output voltages. Its integrated cooling system helps to improve efficiency and reduce the overall size and weight of the application, while its built-in fault protection helps to detect over-voltage, over-temperature, short-circuit and LED open-circuit faults.

Conclusion

The TPS92551TZX/NOPB is a versatile LED driver for a wide range of applications. Its high efficiency and robust construction make it an ideal choice for applications such as LED strips, point-of-sale terminals, kiosks, sports lighting, LED signage, and LED stage lighting. This device helps to reduce size and cost while ensuring utmost accuracy in LED current and voltage management.