LM5100CMA

Product Overview

Category: Integrated Circuit (IC)

Use: The LM5100CMA is a high-voltage gate driver IC designed for driving both the high-side and low-side N-channel MOSFETs in a synchronous buck or half-bridge configuration. It is commonly used in power electronics applications.

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

Package: The LM5100CMA is available in a small 8-pin SOIC package, which provides ease of integration into various circuit designs.

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

Packaging/Quantity: The LM5100CMA is typically sold in reels containing 250 units per reel.

Specifications

• Supply Voltage Range: 9V to 100V
• Maximum Output Current: ±2A
• Operating Temperature Range: -40°C to +125°C
• Rise/Fall Time: 15ns (typical)
• Input Logic Compatibility: CMOS/TTL

Detailed Pin Configuration

The LM5100CMA features the following pin configuration:

1. VDD: Power supply input
2. HO: High-side gate drive output
3. LO: Low-side gate drive output
4. VSS: Ground reference
5. SD: Shutdown input
6. RT: External timing resistor connection
7. CT: External timing capacitor connection
8. IN: Logic input for controlling the gate drive

Functional Features

• High voltage level shifting
• Adaptive shoot-through protection
• Under-voltage lockout (UVLO) protection
• Thermal shutdown protection
• Adjustable dead-time control
• Gate drive current optimization

Advantages and Disadvantages

Advantages: - High voltage capability allows for use in a wide range of applications - Fast switching speed enables efficient power conversion - Robust protection features enhance system reliability - Adjustable dead-time control improves efficiency and reduces losses

Disadvantages: - Limited output current compared to some other gate driver ICs - Requires external timing components for optimal operation

Working Principles

The LM5100CMA operates by receiving logic input signals through the IN pin, which controls the gate drive outputs (HO and LO). These outputs provide the necessary voltage levels to drive the high-side and low-side MOSFETs. The adaptive shoot-through protection prevents both MOSFETs from conducting simultaneously, reducing power dissipation and improving efficiency.

Detailed Application Field Plans

The LM5100CMA is widely used in various power electronics applications, including: - Switch-mode power supplies - Motor drives - Solar inverters - Uninterruptible power supplies (UPS) - Electric vehicle charging systems

Detailed and Complete Alternative Models

1. LM5113: A higher current version of the LM5100CMA with ±4A maximum output current.
2. IRS21844: A similar high-voltage gate driver IC with integrated protection features.
3. FAN7388: Another alternative offering high voltage capability and adjustable dead-time control.

These alternative models provide similar functionality and can be considered based on specific application requirements.

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