TPS92518QPWPRQ1 - English Editing Encyclopedia Entry

Product Overview

Category

The TPS92518QPWPRQ1 belongs to the category of integrated circuits (ICs) specifically designed for lighting applications.

Use

This product is primarily used for driving high-power LEDs in various lighting systems, such as automotive headlights, streetlights, and industrial lighting.

Characteristics

• High efficiency: The TPS92518QPWPRQ1 offers excellent power conversion efficiency, resulting in reduced energy consumption and improved overall system performance.
• Wide input voltage range: This IC can operate with a wide input voltage range, making it suitable for different lighting applications.
• Dimming control: It provides flexible dimming control options, allowing users to adjust the brightness of the LEDs according to their requirements.
• Protection features: The TPS92518QPWPRQ1 incorporates various protection mechanisms, including overvoltage protection, overcurrent protection, and thermal shutdown, ensuring safe and reliable operation.

Package and Quantity

The TPS92518QPWPRQ1 is available in a small outline package (SOP) with 20 pins. It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input voltage range: 4.5V to 65V
• Output current: Up to 2A
• Switching frequency: Adjustable from 100kHz to 1MHz
• Dimming control: Analog/PWM dimming
• Operating temperature range: -40°C to 125°C

Detailed Pin Configuration

The TPS92518QPWPRQ1 has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. VCC: Supply voltage for internal circuitry
4. EN: Enable pin
5. DIM: Dimming control input
6. FB: Feedback pin for output voltage regulation
7. CS: Current sense pin
8. VREF: Reference voltage output
9. AGND: Analog ground
10. PGND: Power ground
11. SW: Switch node connection 12-19. NC: No connect
12. VOUT: Output voltage

Functional Features

• High-efficiency buck converter: The TPS92518QPWPRQ1 integrates a high-performance buck converter that efficiently converts the input voltage to the desired output voltage for driving LEDs.
• Flexible dimming control: It supports both analog and pulse-width modulation (PWM) dimming techniques, allowing precise control over the brightness of the LEDs.
• Protection mechanisms: The IC incorporates various protection features, including overvoltage protection, overcurrent protection, and thermal shutdown, ensuring safe operation and preventing damage to the LEDs and the IC itself.
• Wide input voltage range: The TPS92518QPWPRQ1 can operate with a wide input voltage range, making it suitable for different lighting applications with varying power supply conditions.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced energy consumption and improved system performance.
• Wide input voltage range enables compatibility with various power supply sources.
• Flexible dimming control options allow customization of lighting effects.
• Integrated protection mechanisms ensure safe and reliable operation.

Disadvantages

• Limited output current capacity may not be suitable for high-power LED applications requiring higher currents.
• The package size may pose challenges in space-constrained designs.

Working Principles

The TPS92518QPWPRQ1 operates as a buck converter, converting the input voltage to a lower output voltage suitable for driving LEDs. It utilizes a high-frequency switching technique to regulate the output voltage. The dimming control input adjusts the duty cycle of the switching waveform, thereby controlling the average current flowing through the LEDs and adjusting their brightness.

Detailed Application Field Plans

The TPS92518QPWPRQ1 finds applications in various lighting systems, including: - Automotive headlights: It can be used to drive high-power LEDs in automotive headlight assemblies, providing efficient and reliable lighting solutions. - Streetlights: The IC enables energy-efficient street lighting by driving high-power LEDs with precise dimming control. - Industrial lighting: It is suitable for industrial lighting applications where high-power LEDs are used to provide bright and uniform illumination in factories, warehouses, and other industrial settings.

Detailed and Complete Alternative Models

• TPS92515QPWPRQ1: Similar to the TPS92518QPWPRQ1, but with a lower output current capacity of up to 1.5A.
• TPS92520QPWPRQ1: Offers higher output current capability of up to 3A, making it suitable for driving higher-power LEDs.
• TPS92530QPWPRQ1: Provides additional features such as integrated diagnostics and fault protection mechanisms, enhancing system reliability.

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