Overview
The LM5045SQX/NOPB is a high-performance full-bridge PWM controller manufactured by Texas Instruments. Designed for power management applications, this integrated circuit (IC) is part of the LM5045 series and is widely used in isolated DC-DC converters. Its advanced features and robust design make it suitable for industrial, automotive, and consumer electronics applications. The LM5045SQX/NOPB is particularly valued for its ability to handle input voltages up to 100 V and its integrated MOSFET drivers, which simplify circuit design and enhance efficiency.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Function | Full-Bridge PWM Controller | - | - |
| Manufacturer | Texas Instruments | - | - |
| Topology | Full-Bridge, Half-Bridge, Push-Pull | - | - |
| Switching Frequency | 100 kHz to 2000 kHz | kHz | - |
| Output Current | 2 | A | - |
| Operating Temperature | -40 to +125 | °C | - |
| Package | WQFN-28 | - | - |
| RoHS Compliance | Yes | - | - |
| Factory Pack Quantity | 4500 | - | - |
| Weight | 40 | mg | - |
Key Features
- Integrated MOSFET drivers for high-side and low-side gates.
- Supports input voltages up to 100 V.
- Programmable dead-time control for primary and secondary rectifiers.
- Cycle-by-cycle current limiting and hiccup mode restart.
- Programmable soft-start and thermal shutdown protection.
Applications
The LM5045SQX/NOPB is ideal for use in isolated DC-DC converters, particularly in applications requiring high efficiency and reliability. It is commonly employed in industrial automation, automotive electronics, and power supply systems. Its ability to handle high input voltages and provide precise control makes it suitable for advanced power management solutions.
Q & A
1. What is the maximum switching frequency of the LM5045SQX/NOPB?
The maximum switching frequency is 2000 kHz.
2. What is the operating temperature range of this IC?
It operates from -40°C to +125°C.
3. Does the LM5045SQX/NOPB support RoHS compliance?
Yes, it is RoHS compliant.
4. What is the output current capability of this controller?
The output current is 2 A.
5. What package does the LM5045SQX/NOPB come in?
It is available in a WQFN-28 package.
6. Can this IC be used in automotive applications?
Yes, it is suitable for automotive electronics.
7. Does it include thermal shutdown protection?
Yes, it features thermal shutdown protection.
8. What is the input voltage range for this controller?
The input voltage range is 14 V to 100 V.
9. Is the LM5045SQX/NOPB suitable for isolated DC-DC converters?
Yes, it is specifically designed for such applications.
10. How many MOSFET drivers are integrated into this IC?
It includes four integrated MOSFET drivers.
