The FAN7382MX is a part of the ON Semiconductor product line, designed specifically for Power management applications such as gate drivers in power MOSFETs or IGBTs. The product is commonly used in high-efficiency switching power supplies and other power conversion circuits.
Package Type:
The FAN7382MX comes in a SOIC-8 (Small Outline Integrated Circuit) package, which is a surface-mount device with 8 pins.
Pin Function Specifications (Detailed)
Below is the detailed list of pin functions for the FAN7382MX, assuming it is an 8-pin SOIC package. I'll break down each pin and its function:
Pin Number Pin Name Pin Type Function Description 1 VDD Power Input This is the power supply input pin for the IC. It is typically connected to the positive supply voltage (e.g., +15V). This pin is responsible for supplying power to the gate driver. 2 VSS Ground This is the ground pin. It connects to the negative side of the power supply (e.g., 0V). 3 HO Output This is the high-side driver output. It connects to the gate of a high-side MOSFET/IGBT for switching. It is used to drive the MOSFET or IGBT to turn it on or off in a switching circuit. 4 COM Output This is the common connection for the low-side driver. It serves as the reference for the low-side MOSFET gate drive. 5 NC No Connection This pin is not connected to any internal circuitry. It can be left unconnected or used for grounding purposes in specific applications. 6 LO Output This is the low-side driver output. It connects to the gate of the low-side MOSFET/IGBT for switching. It is responsible for turning the low-side MOSFET/IGBT on or off. 7 VSS Ground Ground pin, the same as Pin 2, ensuring a return path for current to flow back to the negative terminal of the power supply. 8 VS Input/Feedback This pin is used to sense the source voltage of the high-side MOSFET. It provides feedback to ensure the proper operation of the gate driver. It is connected to the source of the high-side MOSFET.Detailed Pin Function List for SOIC-8 Package:
VDD (Pin 1): Power supply input for the IC. This pin is necessary for the proper functioning of the gate driver circuit. VSS (Pin 2): Common ground pin to reference all signals. HO (Pin 3): High-side driver output. Drives the gate of a high-side MOSFET/IGBT. COM (Pin 4): Common reference for the low-side driver, serves as the return path. NC (Pin 5): No Connection. This pin does not have an electrical function in the device but might be used for mechanical stability in some cases. LO (Pin 6): Low-side driver output. Drives the gate of the low-side MOSFET/IGBT. VSS (Pin 7): Ground pin, provides the reference voltage for the low-side driver. VS (Pin 8): This is used for high-side source voltage sensing. Ensures proper high-side driver operation by monitoring the source of the high-side MOSFET.Circuit Principle:
The FAN7382MX is typically used to drive the gates of MOSFETs in power supply circuits. It can control both high-side and low-side MOSFETs with a bootstrap capacitor (connected between VDD and VSS) to provide the necessary gate drive voltage for the high-side MOSFET.
The IC uses a complementary pair of drivers: one for the low-side MOSFET and one for the high-side MOSFET. The VS pin senses the source voltage of the high-side MOSFET to ensure proper driving when the high-side MOSFET needs to be turned on. The high-side driver (HO) can operate above the VDD voltage, making it possible to control the high-side MOSFET in applications where the source is connected to a higher voltage (e.g., in a half-bridge configuration).
20 FAQ about FAN7382MX:
What is the FAN7382MX used for? The FAN7382MX is a gate driver IC designed to control the switching of power MOSFETs or IGBTs in power electronics applications, such as motor drives and power supplies.
What type of package is the FAN7382MX? It comes in an SOIC-8 package, which is a small-outline surface-mount package with 8 pins.
How many pins does the FAN7382MX have? The FAN7382MX has 8 pins in its SOIC-8 package.
What is the function of Pin 1 (VDD)? Pin 1 (VDD) is the power input for the IC. It is where the positive supply voltage is connected.
What does Pin 4 (COM) do? Pin 4 (COM) is the reference for the low-side gate driver. It connects to the source of the low-side MOSFET.
Can I leave Pin 5 (NC) unconnected? Yes, Pin 5 (NC) is not internally connected to any circuitry and can be left unconnected in most applications.
What is the role of Pin 3 (HO)? Pin 3 (HO) is the output for the high-side gate driver, which drives the gate of the high-side MOSFET or IGBT.
Is Pin 7 (VSS) the ground pin? Yes, Pin 7 (VSS) is the ground pin, providing a reference for the low-side driver.
How does the VS pin function? Pin 8 (VS) senses the voltage at the source of the high-side MOSFET, which helps the gate driver operate correctly.
What type of external components are needed for the FAN7382MX? Typically, external capacitors are needed for the VDD pin to ensure stability and proper operation of the gate driver.
Can the FAN7382MX drive both high and low side MOSFETs? Yes, it can drive both high and low-side MOSFETs, making it suitable for half-bridge or full-bridge configurations.
Is the FAN7382MX suitable for motor drive applications? Yes, it is commonly used in motor drives where efficient switching of MOSFETs is required.
What is the input voltage range for the FAN7382MX? The typical input voltage for VDD is +15V, but it may vary depending on the application.
What is the frequency range for the FAN7382MX? The FAN7382MX can operate effectively at high switching frequencies (typically up to hundreds of kHz), making it ideal for high-speed switching applications.
How do I connect the FAN7382MX in a circuit? The VDD and VSS pins should be connected to the power supply, and the HO and LO pins should be connected to the gate of the MOSFETs or IGBTs to control their switching.
What are the typical applications for FAN7382MX? It is used in power supplies, inverters, motor drives, and other power electronic systems that require efficient MOSFET/IGBT gate control.
What is the output voltage of the FAN7382MX? The output voltage for the high-side driver (HO) is above the VDD voltage, typically around VDD + 10V, depending on the supply voltage.
How do I handle the VSS pin in the application? The VSS pin should be connected to the ground of the circuit, ensuring all low-side drivers have a proper reference.
Can I use the FAN7382MX in a high-voltage environment? Yes, but you should ensure that the voltage ratings of the MOSFETs or IGBTs used with the FAN7382MX are compatible with your circuit.
What are the thermal considerations for the FAN7382MX? The FAN7382MX has a low thermal resistance and should be used within the recommended temperature range for reliable performance.
Conclusion:
The FAN7382MX is a versatile and efficient gate driver suitable for driving both high and low-side MOSFETs/IGBTs. It is commonly used in applications requiring high-speed switching and reliable operation in power electronics.
