MIC4126BME

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The MIC4126BME is a low on-resistance, high current gate driver that is ideal for high power and high frequency applications such as motor drive, power converter, and industrial control systems. It is designed to ensure the fast and efficient control of higher voltage FETs with lower operating gate resistance. It also features a Rapid Micropower startup circuit to provide fast, low power transitions.

Features

• High input voltage range: 12V to 18V
• Low on-resistance: 200mΩ
• High output current capability: 4.0A
• Efficient, low power startup: 150µA typical
• Integrated bootstrap gate driver for high voltage FETs
• Flexible soft-start for advanced power supply designs
• Reverse blocking to prevent negative rail spikes
• Under-voltage lockout protection
• Internal pull-up/pull-down FETs for simplified circuit design

Applications

• Motor drive applications
• Voltage regulator modules
• Power over Ethernet (PoE)
• AC/DC converters
• DC/DC converters
• LED drivers
• Plasma display panels (PDP)
• Industrial control systems

Working Principle

The MIC4126BME is designed to operate with a wide range of high voltage FETs, including MOSFETs, IGBTs, and SiC FETs. The device is powered by the input voltage and provides an integrated gate driver stage that can provide up to 4.0A of current drive to control the FET gate. The MIC4126BME also features a Rapid Micropower startup circuit which allows the gate driver to transition quickly and efficiently while consuming only a fraction of the current of a standard MOSFET gate driver.

Additionally, the MIC4126BME has several safety and protection features that help ensure reliable operation. These include reverse blocking, under-voltage lockout, and adjustable soft-start. The MIC4126BME also includes internal pull-up, pull-down and Miller clamp FETs which helps to eliminate the need for external components, resulting in a simplified and cost-effective circuit design.

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