LM5104M

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Introduction

The LM5104M PMIC-Gate Drivers（Power Management Integrated Circuit - Gate Drivers) is the latest offering from Texas Instruments (TI). This device is a high speed, high efficiency power management integrated circuit (PMIC). It incorporates MOSFET drivers and DMOSFET transistors to provide an array of gate and phase drive signals for various applications.

Core Components

The LM5104M is comprised of a 4-Wire Control Interface, a 4-Port Gate Driver and a 4-Phase DMOSFET Transistor Network. Here’s how these three core components work together to provide the desired output:

• The 4-Wire Control Interface consists of signal pins and power feedback pins. The signal pins provide programming input to the device, and the power feedback pins monitor the voltages on the control circuit for over voltage protection features.
• The 4-Port Gate Driver is a component that receives gate signals from the control interface and drives the gates of the cascaded MOSFET devices. It can drive up to 4 devices in parallel, enabling it to switch 12A in a short time frame of 100ns.
• The 4-Phase DMOSFET Transistor Network is composed of 4 DMOSFET transistors that are connected in parallel to increase current capacity and reduce turn-on times.

Application fields

The LM5104M is designed to be used in a variety of applications where high speed and high efficiency are required. Some of these include:

• Automotive Electronics – The LM5104M is designed to be compliant with AEC-Q100 standards, making it suitable for use in automotive safety critical systems.
• Adaptive Lighting & Imaging – The LM5104M can be used in systems that require adaptation of backlighting or imaging systems in response to changing environmental conditions.
• Industrial & Home Appliances – The device can be used in a variety of appliances, from motor control systems to lighting control and more.
• Smart Grids & Control Solutions – This device is also suited for use in smart grids and control solutions, where it can power digital logic gates, dimmers and more.

Working principle

The LM5104M PMIC-Gate Drivers works by controlling the turn-on and turn-off of MOSFETs via the 4-wire control interface. It consists of a control module, which is responsible for interpreting programming commands. This control module is connected to an output driver, which is responsible for switching the MOSFET channel on and off. The output driver utilizes an array of four DMOSFET transistors that are connected in parallel in order to increase current capacity and reduce turn-on times.

The LM5104M PMIC-Gate Drivers contains a wide range of features to ensure reliable operation, including over-temperature protection, over-voltage protection, current limit protection, and output control circuits. It also features a power shutdown pin to completely turn off the device and a gate driver enable pin that is used to enable or disable the gate driver circuit.

Conclusion

The LM5104M PMIC-Gate Drivers is an innovative high speed, high efficiency power management integrated circuit from Texas Instruments. Its features include a 4-wire control interface, a 4-port gate driver and a 4-phase DMOSFET transistor network. It is designed to be compliant with AEC-Q100 standards, making it suitable for use in automotive safety critical systems, as well as in appliances, adaptive lighting & imaging, smart grids & control solutions, and more. The LM5104M is the perfect choice for applications that require high speed and high efficiency.

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