MIC4429BMM

Logic Voltage - VIL, VIH:	0.8V, 2.4V
Base Part Number:	MIC4429
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):	12ns, 13ns
Input Type:	Inverting
Current - Peak Output (Source, Sink):	6A, 6A
Series:	--
Voltage - Supply:	4.5 V ~ 18 V
Gate Type:	N-Channel, P-Channel MOSFET
Number of Drivers:	1
Channel Type:	Single
Driven Configuration:	Low-Side
Part Status:	Discontinued at Digi-Key
Packaging:	Tube

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Introduction

The MIC4429BMM is a low-voltage gate driver IC from MICREL Semiconductor. It is an integrated power supply for high-voltage switches, providing precise current sinking and control of output current to optimize the power efficiency. This device is used in a variety of applications such as solar inverters, AC/DC power conversion, and power management systems. The MIC4429BMM can operate over a wide range of voltages and frequencies and is compatible with most logic levels, making it ideal for a variety of applications.

Application Field

The MIC4429BMM is designed to be used in applications that require accurate current control in a wide operating range of voltages and frequencies. These include:

• AC/DC power conversion
• Solar inverters and motors
• High-current DC-DC converters and transformers
• Industrial motor controls and drives
• Power management systems

The device has an impressive level of protection and allows for the integration of various safety features. It also allows for the monitoring of temperature and current levels via over and under-voltage protection.

Working Principle

The MIC4429BMM is based on a Buck and Boost topography that gate drivers a low gate voltage switch with a high voltage load. It offers precise current control to maintain the voltage, current, and frequency within specified limits. It includes a high current feedback (HCFB) loop that allows for the optimization of the output current and power efficiency. This loop works by sensing the output current and adjusting the switching parameters to maximize the power efficiency.The MIC4429BMM also has a temperature protection feature that allows the device to shutdown if the temperature exceeds a certain threshold. This prevents the device from overheating and helps to protect the system.The device also includes a slew rate control feature that allows the user to control the switching time of the device. This feature is useful for applications where switching time needs to be controlled to reduce noise or interference.

Conclusion

The MIC4429BMM is a versatile and reliable gate driver IC from MICREL Semiconductor primarily designed for AC/DC power conversion and solar inverters. It offers precise current control and allows for integration of safety features and protection against over temperature and current levels. The slew rate control feature also allows the user to adjust the switching time as per the requirement. These features make the device ideal for a wide range of demanding applications.

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