L9380

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PMIC - Gate Drivers are the components used to drive the semiconductor switch which is typically used to control power in a wide range of applications. The L9380 integrated gate driver is a tight integration of a Driver stage and an LDO regulator that can provide reliable protection, maximum efficiency when operating at gate turn on and turn off and a low footprint.

Introduction

The L9380 is a single-channel MOSFET or IGBT gate driver designed for various power-switching applications, including motor control, LED/solid-state lighting, power supply, heating and cooling systems and smart home appliance applications. Using advanced circuit design and state-of-the-art process technology, the L9380 provides very high levels of accuracy, reliability and peak transient performance.

The L9380 offers a complete gate driver solution, with on-chip control logic, LDO regulator and a wide range of programmable features for various applications, including an adjustable over-temperature protection circuit, UVLO (Under Voltage Lock Out) thresholds, over-current limit and soft start functions. It also includes an integrated bootstrap diode to minimize the condenser size and save board space.

Features

• On-chip 5V switching regulator, LDO regulator and bootstrap diode
• High efficiency, fast transient response and low noise
• High peak drive current, up to 3A
• Thermal alarm function with adjustable threshold voltage
• Programmable under-voltage lockout (UVLO) and over-current limit
• Selectable driver stages for different applications
• Low standby current (Logic input on current: 0.75 μA)
• Small package with 8-pin or 10-pin options

Application Field

The L9380 integrated gate drivers can be used in a wide range of applications, including motor control, LED lighting, power supplies, heating/cooling systems and smart home appliance applications. It is well suited for high-current, high-voltage and high-frequency applications. It also features adjustable output voltage options and adjustable current limit, making it suitable for use in a variety of applications, such as dust collector switch, DCDC converter switch and IGBT inverter switch.

The features offered by the L9380 make it an ideal choice for driving power MOSFETs and IGBTs to obtain the best efficiency and highest reliability. In addition, its small package size also allows for easier board design and assembly process.

Working Principle

The L9380 integrated gate drivers are designed to provide fast and reliable gate drive for various power-switching applications. Its principle of operation involves the L9380 controlling the power MOSFET or IGBT gate switch, based on the logic inputs. The L9380 typically uses a two-stage driver circuit, consisting of pre-driver and driver. The pre-driver stage performs signal level shifting from low voltage level to the driver minimum input level. The signal is then amplified and sent to the driver stage, which then drives the output signal to the gate switch.

The L9380 also features an adjustable output voltage level, allowing the user to select the optimal output level for their particular application. It also features an adjustable over-temperature protection circuit, allowing the user to set and monitor temperature conditions in the application. Furthermore, the L9380 also offers programmable features, such as adjustable under-voltage lockout thresholds and over-current limit, allowing the user to optimize the device performance and reliability.

Conclusion

The L9380 integrated gate driver is a high performance device designed for various power-switching applications, such as motor control and LED lighting. It offers a complete gate drive solution, with on-chip control logic, LDO regulator and a wide range of programmable features. The device is well suited for high-current, high-voltage and high-frequency applications, and its small package size allows for easier board design and assembly process.

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