LM5112SD/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-Speed Gate Driver
• Package: LLP (Leadless Package)
• Essence: Efficient and reliable gate driver for power electronics applications
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Input Voltage Range: -0.3V to 7V
• Output Voltage Range: -0.3V to 14V
• Supply Voltage Range: 4.5V to 14V
• Operating Temperature Range: -40°C to 125°C
• Switching Frequency: Up to 100 MHz
• Output Current: ±2A peak source/sink
• Propagation Delay: 20ns (typical)

Pin Configuration

The LM5112SD/NOPB has the following pin configuration:

1. VDD: Supply voltage input
2. GND: Ground reference
3. IN: Input control signal
4. SD: Shutdown control input
5. HO: High-side gate driver output
6. LO: Low-side gate driver output
7. VBST: Bootstrap supply voltage input
8. PGND: Power ground reference

Functional Features

• High-speed switching capability
• Wide input and output voltage range
• Integrated bootstrap diode
• Adaptive shoot-through protection
• Under-voltage lockout (UVLO) protection
• Thermal shutdown protection
• Low propagation delay

Advantages

• Efficient and reliable gate driver for power electronics applications
• High-speed switching capability allows for faster operation
• Wide input and output voltage range provides flexibility in various applications
• Integrated bootstrap diode simplifies circuit design
• Adaptive shoot-through protection enhances system safety
• Under-voltage lockout and thermal shutdown protection ensure device longevity

Disadvantages

• Limited output current compared to some other gate drivers
• Higher cost compared to basic gate driver ICs

Working Principles

The LM5112SD/NOPB is a high-speed gate driver designed for power electronics applications. It provides efficient and reliable switching of power devices such as MOSFETs and IGBTs. The device operates by receiving input control signals and generating high and low-side gate drive voltages to control the power switch.

The integrated bootstrap diode simplifies the circuit design by eliminating the need for an external diode. Adaptive shoot-through protection prevents both high and low-side MOSFETs from conducting simultaneously, enhancing system safety. Under-voltage lockout and thermal shutdown protection features ensure the longevity of the device.

Application Field Plans

The LM5112SD/NOPB is widely used in various power electronics applications, including:

1. Motor drives
2. Solar inverters
3. Uninterruptible Power Supplies (UPS)
4. Switched-mode power supplies
5. Electric vehicle charging systems
6. Industrial automation

Alternative Models

• LM5109: High-Voltage Gate Driver with Integrated Bootstrap Diode
• IRS21844: Half-Bridge Gate Driver IC
• MAX4427: Dual High-Speed MOSFET Driver

These alternative models offer similar functionality and can be considered as alternatives to the LM5112SD/NOPB based on specific application requirements.

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