TPS92638QPWPRQ1 - English Editing Encyclopedia Entry

Product Overview

Category

The TPS92638QPWPRQ1 belongs to the category of integrated circuits (ICs) specifically designed for automotive lighting applications.

Use

This product is primarily used for controlling and driving high-power LEDs in automotive lighting systems. It provides efficient and reliable power management, ensuring optimal performance and longevity of the LEDs.

Characteristics

• High efficiency: The TPS92638QPWPRQ1 offers excellent power conversion efficiency, minimizing energy losses during operation.
• Robust design: It is built to withstand harsh automotive environments, including temperature variations, voltage transients, and electromagnetic interference.
• Dimming capabilities: This IC supports various dimming techniques, allowing precise control over the brightness of the LEDs.
• Protection features: The TPS92638QPWPRQ1 incorporates several protection mechanisms, such as overvoltage and overtemperature protection, ensuring the safety and reliability of the lighting system.

Package and Quantity

The TPS92638QPWPRQ1 is available in a small-sized, surface-mount package (PW-QFN) with 24 pins. It is typically sold in reels or tubes containing multiple units, depending on the supplier's packaging specifications.

Specifications

• Input voltage range: 4.5V to 40V
• Output current capability: Up to 1.5A
• Operating temperature range: -40°C to 125°C
• Dimming control interface: PWM, analog, or I2C
• Fault detection and reporting: Yes
• EMI/EMC compliance: Meets automotive industry standards

Pin Configuration

The TPS92638QPWPRQ1 features a 24-pin PW-QFN package with the following pin configuration:

Pin Number | Pin Name | Function -----------|----------|--------- 1 | VIN | Input voltage 2 | GND | Ground 3 | VCC | Power supply for internal circuitry 4 | EN | Enable pin (active high) 5 | PWM | Dimming control input (PWM signal) 6-9 | NC | No connection 10 | FAULT | Fault detection output 11-14 | NC | No connection 15 | ISET | Current setting pin 16-19 | NC | No connection 20 | SDA | I2C data line 21 | SCL | I2C clock line 22-24 | NC | No connection

Functional Features

• High-efficiency LED driver: The TPS92638QPWPRQ1 efficiently regulates the current flowing through the LEDs, ensuring optimal brightness and minimizing power losses.
• Flexible dimming control: It supports various dimming techniques, allowing precise adjustment of the LED brightness according to the application requirements.
• Fault detection and reporting: The IC monitors critical parameters and provides a fault detection output, enabling timely diagnosis and troubleshooting of potential issues in the lighting system.
• Thermal protection: The TPS92638QPWPRQ1 incorporates thermal shutdown mechanisms to prevent overheating, enhancing the overall reliability and lifespan of the LEDs.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption and improved energy efficiency.
• Robust design ensures reliable operation in demanding automotive environments.
• Flexible dimming options enable customization of lighting effects.
• Comprehensive protection features enhance system safety and longevity.

Disadvantages

• Limited output current capability may not be suitable for high-power LED applications requiring higher currents.
• Complex pin configuration may require careful attention during installation and PCB layout.

Working Principles

The TPS92638QPWPRQ1 operates as a constant current LED driver. It regulates the current flowing through the LEDs by adjusting the duty cycle of the PWM signal or the analog control voltage. The IC continuously monitors the LED current, providing feedback to maintain a stable and accurate output.

Detailed Application Field Plans

The TPS92638QPWPRQ1 is widely used in various automotive lighting applications, including:

1. Headlights: It can drive high-power LEDs used for low beam, high beam, or adaptive headlights.
2. Daytime running lights (DRL): The IC ensures efficient and reliable operation of DRL systems, enhancing vehicle visibility during daylight hours.
3. Tail lights: It provides precise control over the brightness of tail lights, improving safety and visibility for following vehicles.
4. Interior lighting: The TPS92638QPWPRQ1 can be utilized for ambient lighting, instrument panel illumination, and other interior lighting applications.

Detailed Alternative Models

1. TPS92630QPWPRQ1: This IC offers similar functionality but with a lower output current capability of up to 1A.
2. TPS92640