L9907

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L9907 is a power management integrated circuit (PMIC) for gate drivers that provides integrated and reliable control of N-Channel MOSFETs and IGBTs used in low power isolated and non-isolated DC-DC applications. It is a three terminal MOSFET and IGBT gate driver, integrated with a wide range of power devices such as NMOS, discrete and integrated IGBT, as well as other devices. L9907 is designed to provide fast, reliable and efficient control of power components in a wide variety of settings.

Application Field of L9907

The L9907 gate driver can be widely applied in many kinds of electronics and automation products, such as DC-DC full bridge converters, inverter, circuit protection and so on. With its high frequency performance, low voltage, and high efficiency, the L9907 is ideal for applications in the automotive, industrial and lighting sectors.

Specifically, this PMIC can be used in DC-DC full bridge convertors, which include many different general DC to DC applications such as AC-DC adapters for appliances, computer standby power supply, battery chargers, and DC-DC converters in automotive. Regarding to the inverter application, popular inverters such as the inverters for photovoltaic array systems, smart grid inverters, home appliance inverters, or solar adjustable frequency drives can take advantage of this IC.

L9907 also has a very wide range of applications in circuit protection, especially in the harsh environment of an automotive system, where the IC can provide low input voltage, and low power dissipation to withstand the temperature variations. It can be used in line and load protections, such as voltage transducers, overvoltage protection circuits, and reverse current protection circuits. In addition, it can also be used in lighting applications, including automotive lighting, street lighting, and interior lighting.

Working Principle of L9907

The working principle behind the L9907 power management integrated circuit is that it uses voltage-mode control to accurately control the high side and low side of two external N-Channel MOSFETs or IGBTs. The L9907 has an advanced charge pump circuit which can reduce the operating voltage from 5V to as low as 3V, enabling its use in applications that need to be powered from a battery or low voltage source. With the built-in Proportional Integral Circuit (PIC) and dynamic output switch technology, the L9907 can provide excellent gate-source current to produce a large gate voltage for maximum switching frequency performance. This also provides a low-ramp gate drive to reduce gate capacitance needed for fast MOSFET and IGBT switching.

The L9907 also has an integrated overvoltage/overcurrent protection circuit, which can detect any potential overloads of the gate-source voltage, and ensure that it remains within the specified operating range. The IC also provides an integrated shutdown pin, which can be used to quickly turn off both switches in order to protect the IC from any accidental damage. In addition, the L9907 also has an adjustable gate drive configuration, allowing for optimal performance based on different switching frequencies.

In summary, the L9907 gate driver is a reliable, efficient and flexible integrated circuit for gate drivers. With its wide application field and advanced features, it is the perfect choice for any DC-DC, inverter, circuit protection and lighting applications. By using the L9907, designers can easily achieve a fast, reliable and efficient control of power components.

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