SN75478P

Logic Voltage - VIL, VIH:	0.8V, 2V
Base Part Number:	SN75478
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 70°C (TA)
Rise / Fall Time (Typ):	50ns, 90ns
Input Type:	Inverting
Current - Peak Output (Source, Sink):	500mA, 500mA
Series:	--
Voltage - Supply:	4.5 V ~ 5.5 V
Gate Type:	--
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Low-Side
Part Status:	Active
Packaging:	Tube

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Introduction

The SN75478P is a high active low-side driver IC, which belongs to the Gate Drivers category of PMIC products. It has many features, including high switching speed, low RDS(on), and high current carrying capability. This device is designed specifically to drive low-side MOSFETs and IGBTs in various applications, such as motor control, automotive and industrial applications.

Application Field

• Motor control systems: The SN75478P can be used to control the speed of dc motors, such as in automotive or industrial applications. It is also widely used in various types of spindle and axis motors.
• Power supplies and adapter systems: This device can be useful in power supplies, AC/DC and DC/DC convertors, and other adapter systems.
• Industrial applications: The SN75478P is widely used in industrial instrumentation, welding equipment and other process control applications.
• Automotive applications: This device can be used in automotive applications, such as fuel injection systems, ECUs, and ABS systems.

Working Principle

The SN75478P low-side driver IC is an active device that uses a combination of PMOS and NMOS transistors to control the switching of a low-side MOSFET or IGBT. When the input voltage is applied to the gate, the PMOS transistor is turned on and a current starts to flow, turning on the device.At the same time, the NMOS transistor is driven in the opposite direction, turning it off and allowing the gate voltage to drop. This results in a decrease in the gate voltage, which causes the MOSFET or IGBT to turn off. The device is then in a quiescent state, consuming very little power.

Conclusion

The SN75478P IC is a very useful device for applications, such as motor control and power supplies. Its low RDS(on) and high current carrying capability make it a good choice for these types of applications. In addition, it has a high switching speed, which is important in controlling the speed of dc motors and other processes.The specific data is subject to PDF, and the above content is for reference

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