E-L4978D

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	L4978
Supplier Device Package:	16-SO
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	100kHz ~ 300kHz
Current - Output:	2A
Voltage - Output (Max):	50V
Series:	--
Voltage - Input (Max):	55V
Voltage - Input (Min):	8V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tube

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Introduction of E-L4978DE-L4978D is a core product of ST Microelectronics. It is a high-performance integrated dual full-bridge motor driver with over current protection, load current, motor temperature, and motor stall protection. It is designed for the automotive industry and is ideal for driving brushed type or brushless type motors. The E-L4978D offers a wide range of features, including four programmable PWM outputs with adjustable frequency, symmetry, and duty cycle; current sensing for load current measurement; automatic over current protection and stall detection; output short-circuit protection; and adjustable over temperature protection.Application Field and Working Principle of E-L4978DE-L4978D is a DC DC switching regulator designed for the automotive industry. It integrates two full-bridge drivers, enabling the generation of high-voltage, high-power pulses. It is suitable for driving brushed and brushless motors. The E-L4978D offers four programmable PWM outputs, which can be adjusted to control the speed and torque of the motor while ensuring protection against over current, load current, and motor temperature. The working principle of the E-L4978D is based on the Pulse-Width Modulation (PWM) technique. A PWM signal controls the switching of a powerMOSFET. The duty cycle determines the speed and torque of the motor. The PWM frequency is adjustable within a certain range, which allows for an increase in the resolution of the motor control. A high-frequency PWM signal is capable of accurately controlling the motor speed and torque. The E-L4978D also provides current sensing for load current measurement. This allows the motor driver to detect any overload or overcurrent conditions, and it can adjust the PWM frequency accordingly. The E-L4978D also features an adjustable over-temperature protection and output short-circuit protection, ensuring reliable and safe operation of the motor. In conclusion, E-L4978D is a high-performance, integrated dual full-bridge motor driver with over current protection, load current, motor temperature, and motor stall protection. It is designed for the automotive industry and is suitable for driving brushed and brushless type motors. It integrates two full-bridge drivers and employs a PWM technique to control the motor speed and torque. It also provides current sensing for load current measurement, automatic over current protection, stall detection, output short-circuit protection, and adjustable over-temperature protection.

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