LM5101M

Product Overview

Category: Integrated Circuit (IC)

Use: The LM5101M is a high-voltage gate driver IC designed for driving both high-side and low-side N-channel MOSFETs in various applications, such as motor control, power supplies, and inverters.

Characteristics: - High voltage capability - Fast switching speed - Low propagation delay - Wide operating temperature range - Robust protection features

Package: The LM5101M is available in a small outline package (SOP) with 8 pins.

Essence: This IC serves as a crucial component in power electronics systems, enabling efficient and reliable switching of MOSFETs.

Packaging/Quantity: The LM5101M is typically sold in reels containing 250 units.

Specifications

• Supply Voltage Range: 9V to 100V
• Output Current Capability: ±2A
• Operating Temperature Range: -40°C to +125°C
• Rise/Fall Time: 10ns (typical)
• Maximum Duty Cycle: 50%
• Undervoltage Lockout Threshold: 7.5V (typical)

Pin Configuration

The LM5101M has the following pin configuration:

1. VDD: Power supply input
2. HO: High-side gate driver output
3. LO: Low-side gate driver output
4. VSS: Ground reference
5. SD: Shutdown input
6. RT: External resistor connected to set dead time
7. CT: External capacitor connected to set oscillator frequency
8. VB: Bootstrap supply input for high-side gate driver

Functional Features

• High voltage level shifting
• Adaptive shoot-through protection
• Adjustable dead time control
• Integrated bootstrap diode
• Thermal shutdown protection
• Under-voltage lockout

Advantages

• Enables efficient and reliable switching of high-side and low-side MOSFETs
• Fast switching speed reduces power losses
• Wide operating temperature range allows for versatile applications
• Robust protection features enhance system reliability

Disadvantages

• Limited maximum duty cycle of 50%
• Requires external components for setting dead time and oscillator frequency

Working Principles

The LM5101M operates by receiving control signals from a microcontroller or PWM controller. It generates the necessary gate drive voltages to switch the high-side and low-side MOSFETs in a half-bridge configuration. The adaptive shoot-through protection prevents both MOSFETs from conducting simultaneously, ensuring safe operation.

Application Field Plans

The LM5101M finds extensive use in various applications, including: - Motor control systems - Power supplies - Inverters - Solar energy systems - Electric vehicle charging stations

Alternative Models

• LM5102: Dual high-voltage gate driver with independent inputs
• LM5113: High-voltage half-bridge gate driver with integrated boost diode
• IRS2186: High-voltage half-bridge gate driver with programmable dead time

These alternative models offer similar functionality and can be considered as substitutes for the LM5101M in specific applications.

In conclusion, the LM5101M is a high-voltage gate driver IC that provides efficient and reliable switching of MOSFETs in various power electronics applications. Its fast switching speed, wide operating temperature range, and robust protection features make it a popular choice among designers.