UCC28950PWR

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High-performance synchronous rectifier controller - Wide input voltage range - Low quiescent current - Adjustable dead-time control - Protection features for overvoltage, undervoltage, and overcurrent

Package: TSSOP-14

Essence: The UCC28950PWR is a high-performance synchronous rectifier controller IC used in power management applications. It offers various protection features and adjustable control options.

Packaging/Quantity: The UCC28950PWR is available in a TSSOP-14 package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 28V
• Quiescent Current: 100µA (typical)
• Operating Temperature Range: -40°C to +125°C
• Switching Frequency: Up to 1MHz
• Dead-Time Control Range: 20ns to 500ns
• Overvoltage Protection Threshold: Adjustable
• Undervoltage Lockout Threshold: Adjustable
• Overcurrent Protection Threshold: Adjustable

Pin Configuration

The UCC28950PWR has the following pin configuration:

```

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| | --| EN/UVLO | --| VDD | --| GND | --| FB | --| COMP | --| SS/TR | --| RT/CT | --| CT/RT | --| CS | --| PGND | --| DRVH | --| DRVL | --| SYNC/GATE | |___________| ```

Functional Features

1. High-performance Synchronous Rectification: The UCC28950PWR provides efficient synchronous rectification control, reducing power losses in power management applications.

2. Wide Input Voltage Range: With an input voltage range of 4.5V to 28V, the IC can be used in a variety of power supply designs.

3. Adjustable Dead-Time Control: The dead-time control feature allows precise timing adjustment for optimal switching performance.

4. Protection Features: The IC incorporates protection features such as overvoltage, undervoltage, and overcurrent protection, ensuring safe operation under various conditions.

Advantages

• High-performance synchronous rectification improves overall power efficiency.
• Wide input voltage range enables versatile application possibilities.
• Adjustable dead-time control allows fine-tuning for optimal performance.
• Protection features enhance system reliability and safety.

Disadvantages

• Limited pin configuration options may restrict certain circuit designs.
• Requires careful consideration of external components for proper functionality.

Working Principles

The UCC28950PWR operates by controlling the synchronous rectification process in power management applications. It utilizes feedback signals from the output voltage and current to adjust the switching behavior of the power MOSFETs. By optimizing the rectification process, it minimizes power losses and improves overall efficiency.

Application Field Plans

The UCC28950PWR is commonly used in various power management applications, including:

1. Switching Power Supplies
2. DC-DC Converters
3. LED Lighting Systems
4. Battery Charging Systems
5. Industrial Automation Equipment

Alternative Models

Here are some alternative models that can be considered as substitutes for the UCC28950PWR:

1. TPS54332PWP
2. LM5117MHX/NOPB
3. MAX5070BENG+
4. LT3845EMSE#PBF
5. FAN6208MY

These alternatives offer similar functionalities and can be suitable replacements depending on specific requirements.

In conclusion, the UCC28950PWR is a high-performance synchronous rectifier controller IC used in power management applications. It offers various features, protection mechanisms, and adjustable control options. With its wide input voltage range and efficient operation, it finds application in diverse fields such as switching power supplies, DC-DC converters, LED lighting systems, battery charging systems, and industrial automation equipment.