L99ASC03GTR Integrated Circuits (ICs)

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Motor Type - Stepper:	--
Motor Type - AC, DC:	Brushless DC (BLDC)
Function:	Controller - Commutation, Direction Management
Output Configuration:	Pre-Driver - Half Bridge (3)
Interface:	SPI
Technology:	Power MOSFET
Step Resolution:	--
Applications:	Automotive

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PMIC - Motor Drivers, Controllers

The L99ASC03GTR is a PMIC (Power Management Integrated Circuit) designed for motor drivers and controllers. Despite the small size and lightweight CR-HPM package, the device provides a high level of power controlling capabilities. This makes it a leading solution for motor control applications such as stepper and permanent magnet Synchronous Motors (PMSM).

Product Features

The L99ASC03GTR combines several benefits and features to make it an ideal PMIC for different motor control applications:

• Wide supply voltage range (3V to 24V) with high input tolerance up to 38V;
• Integrated Gate-Drive (IGD) with respective MOSFETs and a supporting external power stage;
• Robust protection features such as over-current protection, over-temperature protection, over-voltage protection, and under-voltage protection;
• No external bootstrap capacitor required;
• Integrated Field-Oriented Control (FOC) algorithms.

The L99ASC03GTR offers several features that make it suitable for motor control applications. The wide supply voltage range allows for more flexibility, while the high input tolerance allows for a large input voltage range. Its integrated gate drive (IGD) reduces the need for an external gate driver and the external power stage greatly simplifies board design. In addition, the device offers an advanced protection feature set, eliminating the need for complex external components.

Frequency and Current Limits

The L99ASC03GTR offers a wide frequency range solution, with rated operating frequencies up to 70kHz. It has the capability to control a wide range of motor types, including stepper motors, permanent magnet synchronous motors (PMSMs) and brushless DC motors (BLDCs). The L99ASC03GTR also supports a wide range of current limits, which can be used to protect circuits from short-term overcurrents.

Integrated FOC Algorithms

The L99ASC03GTR offers an integrated FOC algorithm, allowing for precise control of motors with different pole-pair configurations. This advanced feature eliminates the need for complex external code and offers superior performance. Furthermore, the device also supports Differential Velocity Control (DVC), allowing for precise speed control of the motor without the need for additional hardware.

Direction and Soft Ramp Output

The L99ASC03GTR also features direction output, which can be used to provide precise control of the motor direction. This feature also supports soft ramping, allowing for smooth acceleration or deceleration without the need for additional hardware. The device also supports an additional low-side output, allowing for additional control features such as a user interface LED.

Conclusion

The L99ASC03GTR PMIC is a versatile and cost-effective solution for motor control applications, offering a wide range of benefits and features to make it an ideal device. With its integrated IGD, robust protection features, and FOC algorithms, the device offers superior performance and increased ease of implementation.

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