Overview
The L6235Q is a DMOS fully integrated 3-phase motor driver designed by STMicroelectronics. It is realized in BCDmultipower technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. This device is specifically tailored to drive 3-phase Brushless DC (BLDC) motors, incorporating all necessary circuitry including a 3-phase DMOS bridge, a constant OFF time PWM current controller, and decoding logic for single-ended Hall sensors. The L6235Q is available in a QFN48 7x7 package and features non-dissipative overcurrent protection, thermal shutdown, and other advanced protection mechanisms.
Key Specifications
| Specification | Value |
|---|---|
| Operating Supply Voltage | 8 to 52 V |
| Output Peak Current | 5.6 A |
| RDS(on) | 0.3 Ω (typ. @ TJ= 25 °C) |
| Operating Frequency | Up to 100 kHz |
| Package Type | VFQFPN 48 7x7x1.0 mm |
| Grade | Industrial |
| RoHS Compliance Grade | Ecopack2 |
| Operating Temperature Range | -40°C to 150°C |
Key Features
- Non-dissipative overcurrent protection on the high-side power MOSFETs
- Thermal shutdown
- Diagnostic output
- Constant OFF time PWM current controller
- Slow decay synchronous rectification
- 60° and 120° Hall effect decoding logic
- Brake function
- Tacho output for speed loop
- Cross conduction protection
- Undervoltage lockout
- Integrated fast freewheeling diodes
Applications
The L6235Q is suitable for various applications, including:
- Industrial automation and control systems
- Personal electronics requiring high-efficiency motor control
- Automotive systems where robust and reliable motor control is essential
- Medical devices that require precise motor control
- Consumer appliances with BLDC motors
Q & A
- What is the operating supply voltage range of the L6235Q?
The operating supply voltage range of the L6235Q is from 8 to 52 V.
- What is the maximum output peak current of the L6235Q?
The maximum output peak current of the L6235Q is 5.6 A.
- What is the typical RDS(on) value of the L6235Q at 25 °C?
The typical RDS(on) value of the L6235Q at 25 °C is 0.3 Ω.
- What is the maximum operating frequency of the L6235Q?
The maximum operating frequency of the L6235Q is up to 100 kHz.
- What type of package is the L6235Q available in?
The L6235Q is available in a VFQFPN 48 7x7x1.0 mm package.
- Does the L6235Q have overcurrent protection?
Yes, the L6235Q features non-dissipative overcurrent protection on the high-side power MOSFETs.
- What are the key protection mechanisms of the L6235Q?
The key protection mechanisms include thermal shutdown, cross conduction protection, undervoltage lockout, and integrated fast freewheeling diodes.
- Is the L6235Q RoHS compliant?
Yes, the L6235Q is RoHS compliant with an Ecopack2 grade.
- What are some common applications of the L6235Q?
The L6235Q is commonly used in industrial automation, personal electronics, automotive systems, medical devices, and consumer appliances.
- Does the L6235Q support Hall effect sensors?
Yes, the L6235Q includes decoding logic for single-ended Hall sensors.
