TPS92511DDA

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LED driving is a special field of power management integrated circuit (PMIC) where the PMIC consists of a set of components in order to control the current and voltage of the LEDs. TPS92511DDA is a PMIC - LED driver that helps in controlling the current and voltage in the LED lightings. This application provides higher efficiency, better brightness, and longer lifetime to the lighting system.

The TPS92511DDA is a segmented boost converter, which can drive up to 14 white LEDs in series without any external resistor. The device features a constant on-time control architecture, with input voltage range from 2.5V to 5.5V. It consists of a master current control loop and an output voltage loop to ensure accurate current control.

The TPS92511DDA operates in two mode - Normal Mode and Boost Mode. In Normal Mode, the output voltage of the converter is kept constant and the output current increases subject to the current sensing reference voltage. In Boost Mode, the output voltage of the converter is constantly boosted, depending on the system voltages and the reference current.

The TPS92511DDA also has a Dynamic Adaptive Boost (DAB) feature which provides the capability to boost the output voltage to an even higher level if needed, in order to maintain the accuracy of the output current.

The device is also integrated with a number of protection features. Over load protection (OLP) protects the device against currents that are higher than the specification. Over-temperature protection (OTP) protects the device during high temperature conditions.

In addition, the device features a shutdown pin (SHD) which controls the output of the converter. When the SHD is pulled low, the device can be placed into a low current mode, where the total power consumption of the device is minimized.

In summary, the TPS92511DDA is a PMIC - LED driver that provides higher efficiency, better brightness, and longer lifetime to the lighting system. It offers a wide input voltage range and the capability to drive up to 14 LEDs in series without any external resistor. The device also features a current control loop and a Dynamic Adaptive Boost (DAB) feature as well as a number of protection features.

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