Overview
The L6235PD, produced by STMicroelectronics, is a highly integrated DMOS fully integrated 3-phase motor driver designed for driving 3-phase brushless DC (BLDC) motors. This device is realized in BCD technology, combining isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. It includes all the necessary circuitry for BLDC motor control, such as a 3-phase DMOS bridge, a constant off-time PWM current controller, and decoding logic for single-ended Hall sensors. The L6235PD is available in PowerSO36 and SO24 packages, making it versatile for various applications requiring efficient and reliable motor control.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Supply Voltage | 8 V to 52 V |
| Output Peak Current | Up to 5.6 A (2.8 A RMS) |
| RDS(ON) | 0.3 Ω (typical at 25 °C) |
| Operating Frequency | Up to 100 kHz |
| Package | PowerSO36, SO24 |
| Operating Temperature Range | -25 °C to +125 °C |
| Logic Input Voltage Range | 0 to +5 V |
Key Features
- Non-dissipative overcurrent detection and protection
- Constant off-time PWM current controller
- Slow decay synchronous rectification
- 60° and 120° Hall effect decoding logic
- Brake function
- Tachometer output for speed loop
- Cross conduction protection
- Thermal shutdown and undervoltage lockout
- Integrated fast freewheeling diodes
- Diagnostic output
Applications
The L6235PD is suitable for a wide range of applications that require efficient and reliable control of 3-phase BLDC motors. These include:
- Small motor applications in appliances and consumer electronics
- Industrial automation and robotics
- Aerospace and automotive systems
- Medical devices and equipment
- Any application requiring high-efficiency motor control with advanced protection features
Q & A
- What is the operating supply voltage range of the L6235PD?
The operating supply voltage range is from 8 V to 52 V. - What is the maximum output peak current of the L6235PD?
The maximum output peak current is up to 5.6 A (2.8 A RMS). - What is the typical RDS(ON) value of the L6235PD at 25 °C?
The typical RDS(ON) value is 0.3 Ω. - What is the maximum operating frequency of the L6235PD?
The maximum operating frequency is up to 100 kHz. - Does the L6235PD have overcurrent protection?
Yes, it features non-dissipative overcurrent detection and protection. - What types of Hall effect decoding logic does the L6235PD support?
The device supports 60° and 120° Hall effect decoding logic. - Does the L6235PD have a brake function?
Yes, it includes a brake function. - What is the purpose of the TACHO output in the L6235PD?
The TACHO output is used for speed loop control. - Does the L6235PD have thermal shutdown and undervoltage lockout features?
Yes, it includes both thermal shutdown and undervoltage lockout features. - What type of packages is the L6235PD available in?
The device is available in PowerSO36 and SO24 packages.
