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PMIC - LED Drivers: TPS92660PWPR/NOPB Application Field and Working Principle

LED Drivers are an essential part of electronic devices and are used for a plethora of applications such as TV, Mobile phones, Smartphones, Auto headlamps, and more. Specifically, TPS92660PWPR/NOPB is a type of LED driver that is tailored to provide high efficiency, accurate brightness control, and reliable performance. This article will discuss the features and advantages of TPS92660PWPR/NOPB, its application field, and its working principle.

Features and Advantages of TPS92660PWPR/NOPB

TPS92660PWPR/NOPB is a high-performance regulating LED driver integrated circuit (IC). It is the perfect solution for a wide range of applications requiring the precise control of LED brightness levels. The TPS92660PWPR/NOPB provides several advantages compared to other LED Drivers:

• High-efficiency linear current regulator.
• Ultra-wide, adjustable output current range of as low as 5 mA to as high as 1020 mA.
• Wide, adjustable input voltage range from 2.85 V to 16 V.
• PWM dimming control option.
• On-chip open LED and thermal protections.
• Low quiescent current consumption in shutdown mode.
• Soft start function.
• Low output noise.

Application Field

TPS92660PWPR/NOPB is ideal for applications such as industrial, automotive, consumer, and consumer electronics. It finds applications in displays, light emitting diodes (LEDs), digital projection systems, and more. It is an ideal choice for complex electrical systems and solutions such as displays,keypad lighting, vehicle displays, and other applications that require precise control of LED brightness.

Working Principle

This LED Driver is based on a proprietary digital current steering technology with a single-stage regulator architecture. It provides the ideal voltage to an LED with the efficient use of current and a very low typical quiescent power consumption of 80 μA. To maintain proper output current and uniform lighting, the IC monitors LED sense voltage during LED operations. The LED current is sensed using a precision resistor, then compared to a reference voltage, and the result is used to adjust the LED current to the set point. This ensures the LED current is accurately maintained at the designed value.

The device also has on-chip protection circuits to protect the LED from overload conditions such as open-LED and thermal protection. In the event of an overload, the LED current is shut off and the LED voltage is monitored for any overvoltage spikes. If the detected voltage exceeds the specified threshold, the LED current is quickly reduced to a safe level.

In addition, the TPS92660PWPR/NOPB allow for the addition of PWM dimming controllers as an optional feature. This allows the device to directly support pulse-width-modulated (PWM) dimming control, which provides precise low-level dimming of LEDs with minimal power consumption.

TPS92660PWPR/NOPB is a high-performance LED driver that provides the best solutions for applications requiring precise control of LED brightness levels. It offers ultra-wide, adjustable output current range, wide, adjustable input voltage range, on-chip open LED and thermal protection, low quiescent current consumption in shutdown mode, and soft start function. Its application field includes industrial, automotive, consumer, and consumer electronics. The chip is based on a proprietary digital current steering technology and a single-stage regulator architecture, which provides the ideal voltage to an LED with the efficient use of current and a low quiescent power consumption.

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