L6384E

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The L6384E is a multifunction monolithic integrated high and low side power switching device from STMicroelectronics, which integrates a high-side P and N-channel driver and low side N-channel driver, optimized for switching applications. This power device is ideal for driving inductive or resistive loads thanks to its low operating currents and wide range of operating temperature, making it suitable for a wide range of applications in the motor control, power management, and industrial automation industries.

The L6384E operates with a wide input voltage range of up to 12V, enabling it to drive a variety of different loads. The device has a low slew rate of 0.6V/ns and a 200mΩ Ron (output on resistance), which makes it suitable for high switching frequency applications. Other features include a wide operating temperature range of -40°C to +125°C, thermal protection, kill mode, enable input option, and adjustable current limit.

The L6384E also features an adjustable undervoltage lockout and an inverse protection mechanism, which prevents cross-conduction when the high side switch is on and the low side switch is off. The device also has a strong crossover protection capability, which blocks the high side switch until the low side is fully off, ensuring the reliability and longevity of the power device.

In terms of the application field of the power device, the L6384E is suitable for any application that requires pulsed current and voltage regulation. This includes applications such as inductive chargers, switched-mode power supplies, automotive power systems, brushless DC motor controls, low voltage circuits, and more. The device’s wide operating temperature range makes it suitable for use in automotive applications in particular.

The working principle of the L6384E is based on the classic H-bridge motor control scheme, which is an electronic circuit that enables switching between two voltage supplies. The device has an integrated high side P-channel and N-channel driver and a low-side N-channel driver circuit, which enables it to control the current through an inductive or resistive load. The high side drivers use PWM signals to set the desired voltage level, while the low side drivers regulate the current level by varying the duty cycle of the PWM signals. Furthermore, the device’s current limit feature ensures that the current through the load does not surpass the set limit, providing further protection for the load.

The L6384E is classified as a PMIC (Power Management IC) device and it is categorized as a gate driver. Gate drivers are PMICs specially designed to drive Gates signals. They convert a logic signal into a higher voltage signal which can be used to drive the gate of a power transistor, enabling it to switch on and off as necessary. They also provide protection against over-voltage, under-voltage, inrush current, and more, making them essential components in power systems.

In conclusion, the L6384E is a multifunction monolithic power switching device from STMicroelectronics, which integrates a high-side P and N-channel driver and low side N-channel driver, optimized for switching applications. It supports wide operating temperature range, low operating currents, low slew rate, inverse protection, and adjustable current limit. As such, it is excellent for use in motor control, power management, and industrial automation applications. Finally, the L6384E is classified as a PMIC - Gate Driver.

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