Overview
The L6201 is a monolithic full bridge switching motor driver produced by STMicroelectronics. It is realized in Multipower-BCD technology, which integrates isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. This technology allows for optimized logic circuitry and power stages, achieving high performance and efficiency. The device is designed for motor control applications, particularly for DC motors, and is compatible with TTL, CMOS, and microcontroller inputs. It eliminates the need for external MOS drive components and ensures the absence of cross-conduction, making it ideal for speed and direction control of DC motors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Vs) | 12 - 48 | V |
| Maximum Peak Current (L6201) | 5 A | A |
| Total RMS Current (L6201) | 1 A | A |
| RDS (ON) Resistance | 0.3 Ω (typical at 25 °C) | Ω |
| Commutation Frequency | Up to 100 KHz | KHz |
| Thermal Shutdown Temperature | 150 °C | °C |
| Input or Enable Voltage | -0.3 to +7 V | V |
| Input Low Voltage | -0.3 to 0.8 V | V |
| Input High Voltage | 2 to 7 V | V |
Key Features
- TTL, CMOS, and microcontroller compatible inputs.
- Full bridge configuration with isolated DMOS power transistors.
- High efficiency and high switching speeds.
- Internal logic supply and thermal shutdown protection.
- Cross-conduction protection and dead time protection.
- Bootstrap capacitors for efficient driving of upper power DMOS transistors.
- Internal voltage reference with a maximum output current of 2 mA.
Applications
The L6201 is primarily used for controlling DC motors, including speed and direction control. It can be combined with a current regulator like the L6506 to implement a transconductance amplifier for precise speed control. Additionally, it is suitable for driving bipolar stepper motors when used with other control chips like the L6506 or L297.
Other applications include:
- Motor control in industrial automation.
- Robotics and mechatronics.
- Automotive systems requiring motor control.
Q & A
- What is the maximum supply voltage for the L6201?
The maximum supply voltage for the L6201 is 48 V.
- What is the maximum peak current for the L6201?
The maximum peak current for the L6201 is 5 A.
- What is the typical RDS (ON) resistance of the L6201?
The typical RDS (ON) resistance of the L6201 is 0.3 Ω at 25 °C.
- What is the commutation frequency range of the L6201?
The commutation frequency range of the L6201 is up to 100 KHz.
- What is the thermal shutdown temperature of the L6201?
The thermal shutdown temperature of the L6201 is 150 °C.
- Is the L6201 compatible with TTL, CMOS, and microcontroller inputs?
Yes, the L6201 is compatible with TTL, CMOS, and microcontroller inputs.
- What protection features does the L6201 have?
The L6201 has cross-conduction protection and thermal shutdown protection.
- How is the upper power DMOS transistor driven efficiently in the L6201?
The upper power DMOS transistor is driven efficiently using a bootstrap capacitor connected to the BOOT1 and BOOT2 pins.
- What is the purpose of the internal voltage reference in the L6201?
The internal voltage reference provides a stable voltage and can source up to 2 mA of current.
- Can the L6201 be used for bipolar stepper motor control?
Yes, the L6201 can be used for bipolar stepper motor control when combined with other control chips like the L6506 or L297.
