LM5113SD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM5113SD/NOPB is a high-voltage gate driver IC designed for driving both high-side and low-side N-channel MOSFETs in a synchronous buck or half-bridge configuration. It is commonly used in power electronics applications such as motor drives, solar inverters, and switch-mode power supplies.

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

Package: The LM5113SD/NOPB is available in a small outline package (SOP) with 8 pins.

Essence: The essence of the LM5113SD/NOPB lies in its ability to efficiently drive high-side and low-side MOSFETs, enabling efficient power conversion in various applications.

Packaging/Quantity: The LM5113SD/NOPB is typically sold in reels containing 250 units per reel.

Specifications

• Supply Voltage Range: 4.5V to 15V
• Maximum Operating Frequency: 2 MHz
• Peak Output Current: 2A
• Rise/Fall Time: 10 ns
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LM5113SD/NOPB features the following pin configuration:

1. VDD: Power supply input
2. HO: High-side gate driver output
3. LO: Low-side gate driver output
4. HS: High-side MOSFET source connection
5. HB: Half-bridge bootstrap capacitor connection
6. GND: Ground reference
7. LG: Low-side MOSFET gate connection
8. VS: High-side MOSFET source connection

Functional Features

• High-side and low-side gate driver outputs
• Bootstrap capacitor connection for high-side gate driver
• Integrated protection features (overcurrent, overtemperature)
• Adaptive shoot-through protection
• Undervoltage lockout

Advantages and Disadvantages

Advantages: - High voltage capability allows for use in a wide range of applications - Fast switching speed enables efficient power conversion - Integrated protection features enhance system reliability - Adaptive shoot-through protection prevents MOSFET damage

Disadvantages: - Limited to N-channel MOSFETs only - Requires external bootstrap capacitor for high-side gate driver

Working Principles

The LM5113SD/NOPB operates by receiving control signals from a microcontroller or PWM controller and generating the necessary gate drive voltages for the high-side and low-side MOSFETs. It utilizes a bootstrap capacitor to generate a voltage higher than the supply voltage for driving the high-side MOSFET.

During operation, the LM5113SD/NOPB ensures proper timing and sequencing of the gate drive signals to prevent shoot-through current and maximize efficiency. It also incorporates protection features to safeguard against overcurrent and overtemperature conditions.

Detailed Application Field Plans

The LM5113SD/NOPB is widely used in various power electronics applications, including:

1. Motor Drives: The IC provides efficient and precise control of motor drives, enabling smooth operation and improved energy efficiency.

2. Solar Inverters: By driving the MOSFETs in solar inverters, the LM5113SD/NOPB facilitates the conversion of DC power generated by solar panels into AC power for grid integration.

3. Switch-Mode Power Supplies: The IC plays a crucial role in switch-mode power supplies, ensuring efficient power conversion and regulation.

Detailed and Complete Alternative Models

1. LM5114SD/NOPB: Similar to the LM5113SD/NOPB, but with an additional integrated high-side bootstrap diode.
2. LM5115SD/NOPB: A higher voltage version of the LM5113SD/NOPB, capable of operating up to 100V.

These alternative models offer similar functionality and can be considered as alternatives depending on specific application requirements.

In conclusion, the LM5113SD/NOPB is a high-voltage gate driver IC with fast switching speed and integrated protection features. Its compact package size and wide operating temperature range make it suitable for various power electronics applications. While limited to N-channel MOSFETs and requiring an external bootstrap capacitor, its advantages outweigh the disadvantages, making it a reliable choice for efficient power conversion.