MIC4426YMM-TR Integrated Circuits (ICs)

Logic Voltage - VIL, VIH:	0.8V, 2.4V
Base Part Number:	MIC4426
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Rise / Fall Time (Typ):	20ns, 29ns
Input Type:	Inverting
Current - Peak Output (Source, Sink):	1.5A, 1.5A
Series:	--
Voltage - Supply:	4.5 V ~ 18 V
Gate Type:	N-Channel, P-Channel MOSFET
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Low-Side
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to MIC4426YMM-TR Gate Drivers

The MIC4426YMM-TR gate driver is a type of power management integrated circuit (PMIC). It is a specialized tool designed to bridge the gap between traditional MOSFET or IGBT power switches, and the logic circuits which control them. The driver serves two main functions: isolating the control input from the output voltage to protect the control circuit, and increasing the driving current to drive the power switch.

Applications

The MIC4426YMM-TR gate driver can be used in a variety of applications, including:

• High-speed switching of power MOSFETs used in motor control applications
• High-efficiency power conversion circuits (DC/DC converters, AC/DC converters, AC/DC inverters)
• Battery thumper and reverse charge schemes for solar applications
• Power factor correction (PFC) circuits
• Lighting control systems
• Switching power amplifiers

Features and Benefits

The MIC4426YMM-TR gate driver offers a wide range of features and benefits, including:

• Wide Input/Output Voltage Range: The input to the driver can be between 3V and 18V, while the output can be between 6V and 25V. This makes the driver suitable for a wide variety of applications.
• Low-Current Outputs: The driver outputs feature an ultra-low leakage current, ensuring that no current is wasted when the driver is inactive.
• Enhanced EMC Capabilities: The MIC4426YMM-TR features an improved EMC (electromagnetic compatibility) performance, which helps to reduce spurious emissions and improve robustness in noisy environments.
• Improved Level-Shifting: The driver includes a built-in level-shifting feature, which helps to prevent cross-conduction between the high-side and low-side outputs.
• Small Package: The driver is available in a small 4-lead SOT package, allowing it to be mounted on a variety of PCBs with a minimum of board space.

Working Principle

The MIC4426YMM-TR gate driver is a type of level translator, which allows it to bridge the gap between the logic circuits which control the power switch, and the power switch itself. The driver takes an input signal from the logic circuit and amplifies it to provide a high-current output which can drive the load. The driver typically has two inputs and two outputs, one for the high side of the switch and one for the low side. When the input signal is high, the driver applies a voltage to the high-side output and pulls the low-side output low, allowing current to flow through the switch. When the input signal is low, the driver applies a voltage to the low-side output and pulls the high-side output low, cutting off the switch. In addition to amplifying the signal, the driver also serves to isolate the logic circuits from the high voltage switch circuit. This helps to protect the logic circuits from high voltage surges which can potentially damage them.

Conclusion

The MIC4426YMM-TR gate driver is a PMIC designed to bridge the gap between logic circuits and power switches. It features a wide input voltage range and low-current outputs, allowing it to be used in a variety of applications. Its built-in level shifting feature helps to reduce cross-conduction between the high-side and low-side outputs, while its EMC performance helps to reduce spurious emissions and improve robustness. Finally, the driver also provides a measure of isolation from high voltage surges, helping to protect the control circuit.

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