TPS92640PWP/NOPB

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Power management integrated circuits (PMICs) convert energy from one form to another, providing a highly efficient power supply for various electrical components. One type of PMIC is dedicated to driving LEDs (Light Emitting Diodes), and among these are products like the TPS92640PWP/NOPB, a high power LED driver for automotive lighting applications.

The TPS92640PWP/NOPB from Texas Instruments is a high-efficiency, low-voltage input, automotive grade LED driver solution. It is available in a 4.9 mm x 7.2 mm QFN48 package and is AEC−Q100 compliant. This LED driver operates from a supply voltage of 4.5V to 36V and delivers up to 600mA of LED current.

The TPS92640PWP/NOPB is designed as a dual−channel adjustable power LED driver with an integrated 6−bit digital-to-analog converter (DAC) that enables precise adjustment of LED current between 25mA and 600mA. This open-loop current control allows precise individual LED current control with minimal system resources while eliminating the need for a traditional current sensing resistor outside of the IC itself, reducing system size and cost.

The TPS92640PWP/NOPB has integrated power MOSFETS for high efficiency, allowing motorcycles, cars and small-to-mid-size industrial and commercial building lighting applications to use the least power required to operate. Its simple external components reduce design time and cost, making it suitable for the automotive lighting market.

The TPS92640PWP/NOPB boasts high efficiency, low voltage conversion and fast transient response. It features an internal LED current sense that provides excellent LED current accuracy of ±3%. The LED driver also features inherent short/open LED protection, over-temperature protection, under-voltage lockout and a power good indicator.

The TPS92640PWP/NOPB provides integrated soft dimming using either pulse-width modulation (PWM) or analogue dimming, allowing the user to drive LEDs with minimal power consumption. Independent enable pins on each channel allow the user to enable/disable each LED independently and enable true dynamic brightness control of each LED.

The LED driver’s digital feedback provides high accuracy LED current sensing and control, allowing the user to program LED current with a resolution of 0.4 mA/step. This added flexibility allows users to optimize LED current. The LED driver also includes a built-in clock synchronization feature that is synchronized to the input clock frequency, providing a flexible range of PWM dimming frequencies.

The TPS92640PWP/NOPB is designed for use in automotive applications such as headlights, fog lights, daytime running lights, marker lights and warning lights. It is also suitable for commercial, industrial and residential lighting applications such as spotlights, floodlights, street lighting and architectural lighting, among many others.

In summary, the TPS92640PWP/NOPB is an efficient dual-channel LED driver optimized for automotive lighting applications with features such as high efficiency, low voltage conversion, fast transient response and integrated soft dimming. This LED driver is ideal for a wide range of lighting applications, providing users with a high level of control, flexibility and accuracy.

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