MIC4100/1/3/4 - Uncategorized Microchip - Free user manual and instructions
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| Product Type | Half-Bridge MOSFET Driver |
| Brand | Microchip Technology |
| Model | MIC4100/1/3/4 |
| Supply Voltage | 8V to 14V DC |
| Peak Output Current | 2A (source and sink) |
| Output Voltage | Up to 14V (bootstrap) |
| Operating Frequency | Up to 1 MHz |
| Dead-Time Control | Adaptive internal dead-time |
| Package Type | 8-pin SOIC |
| Dimensions | 5.0 mm x 4.0 mm x 1.25 mm (approx.) |
| Weight | Less than 1 gram |
| Primary Function | High-speed switching of high-side and low-side N-channel MOSFETs |
| Compatibility | Designed for synchronous buck converters, half-bridge inverters |
| Input Logic | TTL/CMOS compatible input |
| Undervoltage Lockout | Built-in UVLO for both supply and bootstrap |
| Maintenance | No regular maintenance required; keep clean and dry |
| Cleaning | Gently wipe with a dry cloth if needed; avoid liquids |
| Safety Precautions | Handle with ESD precautions; operate within specified voltage limits |
| Repairability | Surface-mount component; replacement requires professional soldering |
| Spare Parts | No user-serviceable parts; order the IC directly from Microchip or authorized distributors |
| General Information | High-performance gate driver for power electronics, enables efficient power conversion |
Frequently Asked Questions - MIC4100/1/3/4 Microchip
What is the MIC4100/1/3/4?
The MIC4100/1/3/4 is a high-speed half-bridge MOSFET driver from Microchip, designed to drive N-channel power MOSFETs in applications such as synchronous buck converters and half-bridge inverters.
What is the supply voltage range of the MIC4100?
The supply voltage (VDD) ranges from 8V to 14V, making it suitable for 12V rail systems. The bootstrap voltage can go up to 14V above ground for the high-side driver.
What is the peak output current?
The MIC4100 can source and sink up to 2A peak current, which is sufficient to charge and discharge the gate capacitance of medium-sized power MOSFETs quickly.
Can the MIC4100 drive both high-side and low-side MOSFETs?
Yes, it is a half-bridge driver that provides complementary outputs for the high-side (HO) and low-side (LO) MOSFETs in a buck converter or similar topology.
Does the MIC4100 have built-in dead-time control?
Yes, it features adaptive dead-time control to prevent shoot-through current, automatically adjusting to the switching speed of the external MOSFETs.
What is the maximum operating frequency?
The MIC4100 can operate at frequencies up to 1 MHz, enabling compact magnetic components and fast transient response in power supplies.
What package is available?
The MIC4100 is offered in an 8-pin SOIC package, which is suitable for automated soldering and compact PCB layouts.
How do I connect the MIC4100 to my MOSFETs?
Connect the HO and LO outputs to the gates of your high-side and low-side N-channel MOSFETs. Use a bootstrap capacitor between VB and VS for the high-side supply, and include proper gate resistors to control switching speed.
Is the MIC4100 compatible with microcontrollers?
Yes, the input (IN) is TTL/CMOS compatible, so it can be driven directly from a microcontroller output, provided the logic level is within the input threshold (typically 1.5V to 3.0V).
What are typical applications for the MIC4100?
Typical applications include synchronous buck converters, half-bridge inverters, push-pull converters, and other power conversion circuits that require efficient high-frequency switching.
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USER MANUAL MIC4100/1/3/4 Microchip
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Product information
Brand : Microchip
Model : MIC4100/1/3/4
Category : Uncategorized