TPS61165DRVT

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The TPS61165DRVT is a high-efficiency and high-precision power supply current mode DC/DC controller with integrated high-side MOSFET from Texas Instruments. This controller is optimized for driving high-power high-brightness LED (HB LED) applications and features a wide operating voltage range of up to 50V, 2.5A maximum peak output current, an adjustable frequency of up to 1MHz, and PFC control. It also supports wide range of external components with an adjustable external current sense resistor and an external voltage reference.

Application Field

The TPS61165DRVT has a wide operating temperature range of -40°C to +125°C and is specifically designed for automotive applications, especially those that require high efficiency, high accuracy power supply and LED drivers. It is suitable for automotive interior and exterior lighting system, such as headlamps, DRL, LED tail lamps, LED fog lamps, LED strip lights and LED display. It also integrates PFC control which is ideal for automotive interior and exterior lighting systems.

Working Principle

The TPS61165DRVT works using a current-mode control technique. The controller has an external current sense resistor which is connected to an external voltage reference and its duty cycle is determined by the current flowing through the resistor. This current is then compared to the reference voltage to adjust the duty cycle. As current is sourced from the MOSFET, the LED current is then regulated to maintain the LED current at the current limit set by the reference voltage.

The high-side MOSFET is fully integrated and provides supply current up to 2.5A. It has a frequency control mode switch which can be adjusted to adjust the switching frequency of the power supply. It also has a wide operating voltage range of up to 50V and utilizes a step-down converter topology. This enables the TPS61165DRVT to provide high efficiency, long system standby time, and high accuracy current regulation.

The TPS61165DRVT also features PFC control for automotive interior and exterior lighting systems. It utilizes a simple peak current control loop which can maintain the power factor of the power supply within the desired range. This eliminates the need for a bulky external PFC controller and reduces the overall system cost.

In addition, the TPS61165DRVT features over-temperature protection, overload protection, open-loop protection, and short-circuit protection. These features protect the power supply and LED from potential damage due to operating temperature and hazardous overloads.

Overall, the TPS61165DRVT is an ideal solution for automotive interior and exterior lighting systems and is optimized for driving high power and high brightness LED applications.

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