DGD2118S8-13

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PMIC - Gate Drivers

Gate drivers are one of the key peripherals of PMICs (power management integrated circuits). They are responsible for controlling the various solid-state switches that are used in switching power circuits. DGD2118S8-13 is a unique gate driver IC widely used for various contemporary applications.

Application Field

The DGD2118S8-13 gate driver is designed to be used in consumer and communications applications. The device is widely used in power supplies, battery chargers, digital power converters, audio amplifiers, vehicle electronics, and industrial and medical equipment. It is especially suitable for use in 12V and 3.3V DC/DC converters, such as buck, boost, and flyback topologies, as well as in full-bridge and half-bridge configurations.

Working Principle

The DGD2118S8-13 gate driver works by providing a high switching current for activating and deactivating power MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) and IGBTs (Insulated Gate Bipolar Transistors). The device provides a voltage supply along with a step-up circuit that amplifies the input pulse and turns it into a high current drive signal. The output waveform has a fast edge speed with a minimal ringing, which reduces the noise emitted by the circuit.

The DGD2118S8-13 gate driver uses a self-adapting protection circuit to sense the combination of power source voltage and load current. This helps to protect the circuit from over-currents and over-temperatures. The device can also detect faults, such as short circuits and open loads, and shut down the circuit in the event of an overload. The device also has an internal logic output that can be used to signal the failure of an external load.

Features and Benefits

DGD2118S8-13 gate driver IC has several beneficial features:

• Wide supply voltage range of 4.5V to 75V.
• Wide temperature range of -20°C to 85°C.
• Programmable peak current up to 1.1A.
• Low supply current of 4mA.
• Flexible I/O voltage control.
• Adjustable time delay in gate turn-on/off process.
• Fault protection to detect open load and short circuit.
• Under voltage lockout (UVLO) on both power and logic supplies.
• Current consumption boost to enable fast warm-up and fast switching turnaround.

Conclusion

The DGD2118S8-13 is a robust and reliable gate driver IC for various modern industrial applications. Its wide supply voltage range, wide temperature range, adjustable peak current, low supply current, fault protection features, and current consumption boost contribute to its superior performance in applications using high switching frequencies and large power loads.

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