L6392DTR Integrated Circuits (ICs)

PMIC (Power Management Integrated Circuits) are specialized devices that are used to control and manage the flow of current and voltage in a system. PMICs perform various power management functions including power switching, voltage regulation and power control, and are designed to provide efficient, accurate and reliable power management. Gate drivers are a type of PMIC that provide gate drive signals to switching elements used in a power switching system. The L6392DTR is a specific type of gate driver that is integrated into the system for providing driving force to the switching elements in the power switching stage.

Application Field

The L6392DTR gate driver is mainly used in DC motor drives and in motor control applications. It is also used in high voltage power supplies, such as switched-mode power supplies (SMPS). The L6392DTR gate driver is a specialized device designed to provide precise gate voltage signals to switching elements like IGBTs and MOSFETs. It is capable of delivering pulse-width modulation (PWM) signals to control power switching devices.

The L6392DTR gate driver is designed to provide precise and reliable pulse-width modulation signals, allowing for precise speed and torque control of DC motors. The dependent bootstrap circuit provided in the L6392DTR makes it suitable for high-voltage, high-current applications with ultra-low jitter. The floating channel capability of the L6392DTR gate driver allows for the application of the power switching devices without adding additional input protection components.

Working Principle

The L6392DTR gate driver is a four-stage CMOS device that uses a dual-source configuration for the gate drive capability. The dual-source configuration enables one channel of the L6392DTR to sink current while the other channel can source current. The L6392DTR is designed to be low-jitter, with an adjustable pulse width up to 80 us and an adjustable dead time up to 20 us.

The L6392DTR includes two built-in current limiters, one for the high-side driver and one for the low-side driver. This allows the L6392DTR to protect the power switching devices from over-current surges and currents exceeding the rated limit. The L6392DTR also includes a bootstrap circuit to ensure high voltage operation from up to 24 volts on the high-side gate, and the gate resistor is built in for faster turn-off times.

The L6392DTR also includes a voltage-control circuit for low-side gate control, allowing for fast and accurate current control. The built-in Self-Protection Circuit (SPC) feature also allows the L6392DTR to protect the device from high voltage spikes, short turns, and other self-loop or unbalanced conditions.

The L6392DTR is designed with thermal protection features that can be used to shut down the device in case of over-temperature. The device also includes a power monitoring circuit with a PWM signal output that allows the device to detect and detect when the power is out of range or the device is overloaded.

In summary, the L6392DTR gate driver is a specialized device designed for high voltage, high current applications with ultra-low jitter. It provides a dual-source gate drive capability, voltage-control circuit for low-side gate control, two built-in current limiters for high-side and low-side drivers, and a built-in Self-Protection Circuit (SPC). The L6392DTR is used in a variety of motor drives and motor control applications, as well as in high voltage power supplies.