LM5101CMAX

Product Overview

Category: Integrated Circuit (IC)

Use: The LM5101CMAX 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 LM5101CMAX is available in a small outline package (SOIC) 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 LM5101CMAX is typically sold in reels containing 250 units.

Specifications

• Supply Voltage Range: 9V to 100V
• Output Current Capability: ±2A
• Maximum Operating Frequency: 2MHz
• Rise/Fall Time: 10ns
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM5101CMAX has the following pin configuration:

1. VDD: Power supply input for the IC.
2. HO: High-side gate driver output.
3. LO: Low-side gate driver output.
4. VSS: Ground reference for the IC.
5. SD: Shutdown input for disabling the IC.
6. RT: External resistor connected to set the dead time.
7. CT: External capacitor connected to set the oscillator frequency.
8. NC: No connection.

Functional Features

• High-side and low-side gate drivers for N-channel MOSFETs.
• Adaptive shoot-through protection to prevent cross-conduction.
• Under-voltage lockout (UVLO) for reliable operation.
• Adjustable dead time for optimal switching performance.
• Integrated bootstrap diode for simplified circuit design.

Advantages and Disadvantages

Advantages: - Wide voltage range allows versatile applications. - Fast switching speed improves efficiency. - Robust protection features enhance system reliability. - Compact package size saves board space. - Easy to use with integrated bootstrap diode.

Disadvantages: - Limited output current capability may not be suitable for high-power applications. - Requires external components for setting dead time and oscillator frequency.

Working Principles

The LM5101CMAX 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 efficient power transfer and minimizing losses.

Detailed Application Field Plans

The LM5101CMAX finds applications in various fields, including: 1. Motor Control: Enables precise control of motor speed and direction in electric vehicles, robotics, and industrial automation. 2. Power Supplies: Facilitates efficient power conversion in DC-DC converters and switched-mode power supplies. 3. Inverters: Drives MOSFETs in grid-tied solar inverters and uninterruptible power supplies (UPS).

Alternative Models

For alternative options, consider the following ICs: 1. LM5113: Higher output current capability (±4A) and wider operating temperature range (-55°C to +125°C). 2. IRS21844: Integrated high-voltage gate driver with additional protection features. 3. FAN73832: Dual-channel gate driver with built-in dead-time control.

These alternatives provide different specifications and features to suit specific application requirements.

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