TPS92690Q1PWPR/NOPB

Product Overview

Category

The TPS92690Q1PWPR/NOPB belongs to the category of integrated circuits (ICs) specifically designed for automotive lighting applications.

Use

This product is primarily used in automotive lighting systems, providing efficient and reliable control for LED drivers.

Characteristics

• High efficiency: The TPS92690Q1PWPR/NOPB offers high power conversion efficiency, ensuring optimal energy utilization.
• Compact package: It comes in a small form factor package, enabling easy integration into space-constrained automotive lighting designs.
• Robustness: This IC is designed to withstand harsh automotive environments, including temperature variations, voltage fluctuations, and electromagnetic interference.
• Dimming capabilities: The TPS92690Q1PWPR/NOPB supports various dimming techniques, allowing precise control over the brightness of automotive LEDs.
• Protection features: It incorporates built-in protection mechanisms such as overvoltage protection, overcurrent protection, and thermal shutdown, enhancing system reliability.

Package and Quantity

The TPS92690Q1PWPR/NOPB is available in a PowerPAD™ HTSSOP-28 package. It is typically sold in reels containing 250 units per reel.

Specifications

• Input voltage range: 4.5V to 40V
• Output current: Up to 1.5A
• Switching frequency: Adjustable up to 2MHz
• Dimming control: Analog/PWM
• Operating temperature range: -40°C to 125°C
• Efficiency: Up to 95%

Pin Configuration

The TPS92690Q1PWPR/NOPB has the following pin configuration:

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| | | TPS92690Q1 | |_______________________________________|

   Pin 1: VIN
   Pin 2: GND
   Pin 3: EN
   Pin 4: DIM
   Pin 5: FB
   Pin 6: VCC
   Pin 7: AGND
   Pin 8: PGND
   Pin 9: SW
   Pin 10: SW
   Pin 11: SW
   Pin 12: SW
   Pin 13: SW
   Pin 14: SW
   Pin 15: SW
   Pin 16: SW
   Pin 17: SW
   Pin 18: SW
   Pin 19: SW
   Pin 20: SW
   Pin 21: SW
   Pin 22: SW
   Pin 23: SW
   Pin 24: SW
   Pin 25: SW
   Pin 26: SW
   Pin 27: SW
   Pin 28: SW

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Functional Features

• LED current regulation: The TPS92690Q1PWPR/NOPB ensures accurate and stable current regulation for LED drivers, resulting in consistent brightness levels.
• Fault detection and protection: It incorporates fault detection mechanisms to identify issues such as open or short circuits, overvoltage, and overcurrent conditions. Upon detection, appropriate protection measures are activated to prevent damage to the LEDs and the IC itself.
• Dimming control: This IC supports both analog and pulse-width modulation (PWM) dimming techniques, allowing precise control over the brightness of automotive LEDs.
• Thermal management: The TPS92690Q1PWPR/NOPB includes thermal shutdown protection, which activates when the temperature exceeds a certain threshold, preventing overheating and ensuring safe operation.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption and improved energy utilization.
• Compact package enables easy integration into space-constrained designs.
• Robustness ensures reliable operation in harsh automotive environments.
• Dimming capabilities provide flexibility in adjusting brightness levels.
• Built-in protection mechanisms enhance system reliability.

Disadvantages

• Limited output current of up to 1.5A may not be suitable for high-power LED applications.
• The HTSSOP-28 package may require additional thermal management measures for certain high-temperature environments.

Working Principles

The TPS92690Q1PWPR/NOPB operates as a buck LED driver, converting the input voltage to a regulated current for driving LEDs. It utilizes a switching regulator topology to efficiently control the LED current. The dimming control signal, either analog or PWM, adjusts the duty cycle of the switching regulator, thereby controlling the LED brightness. The IC incorporates various protection features to ensure safe and reliable operation under different operating conditions.

Application Field Plans

The TPS92690Q1PWPR/NOPB is widely used in automotive lighting applications, including:

1. Headlights: It provides efficient LED driver control for automotive headlights, enabling precise beam control and improved visibility.
2. Daytime