TPS92551TZX/NOPB

Product Overview

Category

The TPS92551TZX/NOPB belongs to the category of integrated circuits (ICs) specifically designed for LED lighting applications.

Use

This product is primarily used for driving high-power LEDs in various lighting systems, including automotive, industrial, and general lighting applications.

Characteristics

• High efficiency: The TPS92551TZX/NOPB offers excellent power conversion efficiency, ensuring minimal energy loss during operation.
• Dimming capabilities: It supports various dimming techniques such as analog, PWM, and hybrid dimming, allowing precise control over the LED brightness.
• Thermal management: The IC incorporates thermal protection features to prevent overheating, ensuring reliable operation even in demanding environments.
• Wide input voltage range: It can operate with a wide input voltage range, making it suitable for different power supply configurations.
• Compact package: The TPS92551TZX/NOPB is available in a small form factor package, enabling space-efficient designs.

Package and Quantity

The TPS92551TZX/NOPB is packaged in a compact 20-pin WQFN (Wafer-Level Chip Scale Package) format. It is typically supplied in reels containing a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 65V
• Output Current: Up to 1.5A
• Switching Frequency: Adjustable up to 2MHz
• Dimming Control: Analog, PWM, Hybrid
• Operating Temperature Range: -40°C to +125°C
• Efficiency: Up to 95%

Pin Configuration

The TPS92551TZX/NOPB features a 20-pin WQFN package with the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. VCC: Supply voltage for internal circuitry
4. VSENSE: Current sense input
5. FB: Feedback voltage input
6. DIM: Dimming control input
7. EN: Enable pin
8. AGND: Analog ground
9. PWM: PWM dimming input
10. ISET: Output current set pin
11. BST: Bootstrap capacitor connection
12. SW: Switch node connection
13. LX: Inductor connection
14. PGND: Power ground
15. PGND: Power ground
16. PGND: Power ground
17. PGND: Power ground
18. PGND: Power ground
19. PGND: Power ground
20. PGND: Power ground

Functional Features

• Integrated MOSFET: The TPS92551TZX/NOPB incorporates a high-efficiency power MOSFET, eliminating the need for an external transistor.
• Protection Features: It includes various protection mechanisms such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown to ensure safe operation.
• Fault Detection: The IC provides fault detection capabilities, allowing the system to identify and respond to abnormal operating conditions.

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption and improved energy savings.
• Wide input voltage range enables compatibility with different power supply configurations.
• Compact package facilitates space-efficient designs.
• Dimming capabilities allow precise control over LED brightness.
• Integrated MOSFET simplifies the overall circuit design.

Disadvantages

• Limited output current capacity may not be suitable for high-power LED applications requiring higher currents.
• The 20-pin package may require additional board space compared to smaller packages.

Working Principles

The TPS92551TZX/NOPB operates as a constant current LED driver. It regulates the LED current by adjusting the duty cycle of the internal power MOSFET. The feedback voltage from the LED string is compared with a reference voltage, and the control circuitry adjusts the duty cycle accordingly to maintain a constant current.

Application Field Plans

The TPS92551TZX/NOPB finds extensive application in various lighting systems, including: - Automotive lighting: Headlights, taillights, and interior lighting. - Industrial lighting: High-bay lighting, street lighting, and warehouse lighting. - General lighting: Residential and commercial lighting applications.

Alternative Models

For those seeking alternative options, the following models can be considered: - TPS92550TZX/NOPB - TPS92552TZX/NOPB - TPS92553TZX/NOPB

These models offer similar functionality and characteristics, providing flexibility in design choices.

In conclusion, the TPS92551TZX/NOPB is a highly efficient LED driver IC suitable for various lighting applications. Its compact package, dimming capabilities, and integrated features make it an excellent choice for designers looking to achieve optimal performance and energy efficiency in their LED lighting systems.