L6229PD

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L6229PD Application Field and Working Principle

L6229PD, belonging to STMicroelectronics’ STripFET series is a fully protected high current low-side motor driver that features low on-resistance DMOS power transistors, programmable thermal shutdown and a logic-level shift-lock feature. It is suitable for DC motor, solenoid and lamp applications in automotive and consumer applications, such as car audio and automated windows in cars, office equipment, robotics and toys.

Application Fields

The L6229PD is designed to provide a cost-effective solution for automotive applications including car audio and automated windows, office equipment, robotics, and other toys and appliances. The device can also be used in applications where a motor is used in the control circuit, such as power windows, power seats, and garage door openers. The device supports both 12V and 24V operating voltage ranges and can handle a wide range of operating and ambient temperatures.

The device also includes a logic-level shift-lock feature, which enables the user to rapidly change the output state without reprogramming the processor, thus significantly reducing the amount of microcontroller I/O required. The device also offers excellent EMI performance, high current capability, and low on-resistance DMOS power transistors. It is also capable of operating in noisy environments and has a wide range of operating temperature ranges.

Working Principle

The L6229PD motor driver is designed to provide a low-cost solution for motor control applications. The device incorporates a high-current low-side driver with low on-resistance DMOS power transistors and a logic-level shift-lock feature for rapidly changing the output state. The device also features thermal protection circuitry, which prevents current overload damage by automatically shutting down the output when the temperature exceeds a preset limit. In addition, the device also features a wide range of operating temperatures, from -40°C to +125°C.

The device is capable of delivering currents up to 3A and output voltages up to 25V. The device is also capable of operating at PWM frequencies up to 40kHz. The output can be controlled either by an internal logic circuit or an external microcontroller. The device also features an integrated voltage sense circuit, which allows it to detect overcurrent and over-temperature conditions and take appropriate action.

The device also includes a set of programmable parameters, including shift-lock frequency, delay time, and thermal protection level. These parameters can be configured to optimize the performance of the motor driver for specific applications. The device also offers a wide range of voltage protection levels, ensuring that the motor driver will not be damaged by voltage spikes or transients.

In summary, the L6229PD motor driver is designed to provide a low-cost solution for motor control applications. The device features low on-resistance DMOS power transistors, programmable thermal shutdown, logic-level shift-lock feature, wide range of operating and ambient temperatures, integrated voltage sense circuit, and programmable parameters. The device is an excellent choice for automotive, office equipment, robotics, and other toys and appliance applications.

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