BQ51013ARHLR

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The BQ51013ARHLR, also known as a high voltage color converter (HVCC), is a specialized power management integrated circuit (PMIC) for control of LED backlighting in portable devices. The device integrates high-speed pulse-width modulated (PWM) and analog input control with a high-efficiency buck converter. Typical applications include mobile phones, tablet and notebook PCs, and digital displays, making it the ideal choice for high-performance portable devices.

The BQ51013ARHLR is designed to drive LED backlights in mobile displays while meeting the following requirements:

• It must be efficient: the LED backlight must operate at or near its rated voltage.
• It must be power-efficient: the LED backlight must consume as little power as possible while providing the necessary illumination.
• It must be flexible: the LED backlight should be able to be programmed and adjusted on the fly.
• It must be fast: The LED backlight should be able to switch on/off rapidly and accurately as necessary.

The BQ51013ARHLR is designed to meet these requirements. The device consists of four main blocks: a high voltage regulator, a high voltage PWM generator, a high voltage protection circuit, and a voltage feedback circuit.

The high voltage regulator is a fully integrated buck converter that operates with an input voltage of 6V to 18V. The high voltage generator generates a high voltage signal, which is used to drive the LEDs. The signal is generated using a high-efficiency, low-noise performance PWM generator. In addition, the device includes a voltage feedback circuit, which monitors the output voltage and protects the regulator from over-voltage and under-voltage conditions.

In operation, the current to the LED backlight is adjusted based on the input from the PWM/analog signal chains. When the voltage of the device increases, the output voltage of the high voltage generator is also increased, raising the LEDs to make them brighter. Additionally, the high voltage protection circuit ensures that the device does not become over-stressed by transient voltage spikes or other external over-voltage conditions.

By integrating the necessary components into a single device, the BQ51013ARHLR provides improved efficiency, power savings, flexibility, and speed compared to traditional LED backlight solutions. The device is also designed to adhere to the high voltage requirements of modern portable devices, making it an ideal choice for high-performance portable device applications.

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