TPS61150ADRCRG4

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LED drivers are used to control and regulate the current and voltage being provided to LEDs for digital communication and illumination purposes. The TPS61150ADRCRG4 is an LED driver specifically designed for driving high-power LEDs in automotive, general-lighting and architecture applications, with the potential to deliver high efficiency and reliability.

The TPS61150ADRCRG4 is a step-down converter controller with a guaranteed efficiency of 96% and an operating range of 4V to 55V. It is suited to both low-voltage and high-voltage DC inputs, as well as PWM dimming. The device also integrates an over-temperature protection (OTP) to guard against overload-related heat issues.

The TPS61150ADRCRG4 incorporates a feedback system to regulate the input voltage and output current with the aim of providing a constant output current to the LEDs. Depending on the input voltage and output current requirements, the device has programmable current and voltage settings that can be tuned using external resistors.

Internally, the regulator consists of a digital power controller, an internal error amplifier, a PWM comparator, an adjustable clock generator and a voltage regulator for the loop control. The PWM clock generator is programmable, allowing for adjustment of the frequency between 10kHz and 250kHz.

The TPS61150ADRCRG4 includes a pulse-frequency modulation (PFM) mode for increased efficiency at low line. This mode is activated only for light loads, making it suitable for applications where low quiescent dissipation is required. This reduces the total input power consumption and allows the LED driver to operate in parallel with other DC power supplies.

The device is designed with a high switching frequency of up to 2MHz, reducing the size and cost of external components. The high frequency and low operating voltage combination allows the use of small PCBs and small external components, eliminating the need for clunky heat-sinks.

The TPS61150ADRCRG4 can be used to power high-power LEDs in various fields, such as interior lighting in vehicles, intelligent lighting systems, industrial motor drives, consumer electronics and signage applications. Its features provide high efficiency, programming flexibility, reliable over-temperature protection, and superior electrical performance, making it an ideal choice for automotive, general-lighting and architecture applications.

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