LM5104SD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM5104SD/NOPB is a high-voltage gate driver IC designed for driving N-channel MOSFETs in various power conversion applications.

Characteristics: - High voltage capability - Fast switching speed - Low propagation delay - Wide operating temperature range - Compact package size

Package: The LM5104SD/NOPB is available in a small outline package (SOIC) with 8 pins.

Essence: The LM5104SD/NOPB is an essential component in power electronics systems, providing efficient and reliable gate drive signals to control the switching of power MOSFETs.

Packaging/Quantity: The LM5104SD/NOPB is typically sold in reels or tubes containing a specified quantity of ICs.

Specifications

• Supply Voltage Range: 9V to 100V
• Output Current Capability: 2A
• Operating Temperature Range: -40°C to 125°C
• Input Logic Compatibility: CMOS/TTL
• Maximum Propagation Delay: 50ns
• Maximum Rise/Fall Time: 10ns

Pin Configuration

The LM5104SD/NOPB has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. IN: Logic input for controlling the gate driver
4. SD: Shutdown input for disabling the gate driver
5. HO: High-side gate driver output
6. LO: Low-side gate driver output
7. VCC: Gate drive supply voltage
8. BOOT: Bootstrap capacitor connection for high-side gate driver

Functional Features

• High voltage capability allows driving of power MOSFETs in high-power applications.
• Fast switching speed enables efficient power conversion with minimal losses.
• Low propagation delay ensures precise control of the MOSFET switching timing.
• Wide operating temperature range allows reliable operation in various environmental conditions.

Advantages and Disadvantages

Advantages: - High voltage capability enables use in a wide range of power conversion applications. - Fast switching speed results in efficient power conversion with reduced losses. - Compact package size facilitates integration into space-constrained designs.

Disadvantages: - Limited output current capability may restrict usage in high-power applications. - The shutdown input (SD) may require additional external circuitry for proper functionality.

Working Principles

The LM5104SD/NOPB operates by receiving logic-level input signals at the IN pin, which controls the gate driver's output signals. These output signals are then used to drive the gates of N-channel MOSFETs, enabling their switching on and off during power conversion processes. The bootstrap capacitor connected to the BOOT pin provides the necessary voltage level for driving the high-side gate.

Detailed Application Field Plans

The LM5104SD/NOPB is commonly used in the following application fields:

1. Switching Power Supplies: The IC is utilized in the primary side of isolated and non-isolated DC-DC converters to regulate voltage levels efficiently.
2. Motor Drives: It is employed in motor control circuits to drive MOSFETs that control the speed and direction of motors.
3. Solar Inverters: The LM5104SD/NOPB plays a crucial role in solar inverters, converting DC power from solar panels into AC power for grid connection.

Detailed and Complete Alternative Models

1. LM5101: Similar to LM5104SD/NOPB but with a different pin configuration.
2. IRS21844: A high-voltage gate driver IC with similar characteristics and features.
3. MAX15062: Another alternative offering high-voltage gate driver capabilities.

These alternative models can be considered based on specific design requirements and availability.

In conclusion, the LM5104SD/NOPB is a high-voltage gate driver IC that provides efficient and reliable control of N-channel MOSFETs in power conversion applications. Its fast switching speed, wide operating temperature range, and compact package make it suitable for various designs. However, designers should consider its limited output current capability and the need for additional circuitry for shutdown functionality.