LM5100BMAX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High voltage gate driver, wide input voltage range, adjustable dead-time control, integrated bootstrap diode, thermal shutdown protection.
• Package: 8-pin SOIC package
• Essence: The LM5100BMAX/NOPB is a high-voltage gate driver IC designed for driving both the high-side and low-side N-channel MOSFETs in a half-bridge configuration. It provides robust and efficient switching control for power electronics applications.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Input Voltage Range: -0.3V to 12V
• Output Voltage Range: -0.3V to 12V
• Supply Voltage Range: 9V to 100V
• Operating Temperature Range: -40°C to 125°C
• Switching Frequency: Up to 2MHz
• Peak Output Current: ±4A
• Propagation Delay: 50ns (typical)

Pin Configuration

The LM5100BMAX/NOPB features an 8-pin SOIC package with the following pin configuration:

1. VDD: Supply voltage 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: Dead-time control resistor
7. CT: Bootstrap capacitor connection
8. HB: Half-bridge node connection

Functional Features

• High-Voltage Gate Driver: Capable of driving high-side and low-side N-channel MOSFETs in a half-bridge configuration.
• Wide Input Voltage Range: Supports input voltages from -0.3V to 12V, allowing compatibility with various control signals.
• Adjustable Dead-Time Control: Provides flexibility in adjusting the time interval between high-side and low-side MOSFET switching to prevent shoot-through currents.
• Integrated Bootstrap Diode: Simplifies the bootstrap capacitor connection for driving the high-side MOSFET.
• Thermal Shutdown Protection: Automatically shuts down the device when the junction temperature exceeds the specified limit, protecting it from overheating.

Advantages and Disadvantages

Advantages: - High voltage gate driver suitable for power electronics applications - Wide input voltage range allows compatibility with different control signals - Adjustable dead-time control prevents shoot-through currents - Integrated bootstrap diode simplifies circuit design - Thermal shutdown protection ensures device safety

Disadvantages: - Limited peak output current of ±4A may not be sufficient for certain high-power applications - Propagation delay of 50ns may affect the overall system response time in some cases

Working Principles

The LM5100BMAX/NOPB operates by receiving control signals at the HO and LO inputs, which are then amplified and used to drive the high-side and low-side N-channel MOSFETs. The adjustable dead-time control allows precise timing between the two switches, preventing any overlap that could lead to shoot-through currents. The integrated bootstrap diode simplifies the connection of the high-side MOSFET's gate drive voltage. In case of excessive heat, the thermal shutdown protection feature automatically disables the device to prevent damage.

Application Field Plans

The LM5100BMAX/NOPB is widely used in various power electronics applications, including:

1. Motor Drives: Controlling the speed and direction of motors in industrial automation, electric vehicles, and robotics.
2. Switching Power Supplies: Providing efficient power conversion in AC-DC and DC-DC converters.
3. Solar Inverters: Converting DC power from solar panels into AC power for grid connection.
4. Uninterruptible Power Supplies (UPS): Ensuring continuous power supply during outages or voltage fluctuations.
5. LED Lighting: Driving high-power LEDs in lighting applications.

Alternative Models

1. LM5101BMAX/NOPB: Similar to LM5100BMAX/NOPB with additional features such as adaptive dead-time control and adjustable undervoltage lockout.
2. IRS21844SPBF: High-voltage gate driver IC with integrated protection features and adjustable dead-time control.
3. FAN73832MX: Half-bridge gate driver IC with built-in bootstrap diode and adjustable dead-time control.

These alternative models offer similar functionality and can be considered as substitutes for the LM5100BMAX/NOPB in specific applications.

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