Overview
The L6228D device, produced by STMicroelectronics, is a DMOS fully integrated stepper motor driver designed to drive two-phase bipolar stepper motors. It is realized in BCD technology, combining isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. This device includes all the necessary circuitry for stepper motor operation, such as a dual DMOS full bridge, a constant off-time PWM current controller, and a phase sequence generator. The L6228D is available in SO-24 packages and features non-dissipative overcurrent protection and thermal shutdown, making it a robust solution for various industrial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | 8 to 52 | V |
| Output Peak Current | 2.8 A (1.4 A RMS) | A |
| RDS(ON) | 0.73 Ω (typ. at Tj = 25 °C) | Ω |
| Operating Frequency | Up to 100 KHz | KHz |
| Operating Temperature Range | -40 to 150 | °C |
| Package Type | SO-24 | - |
| RoHS Compliance | Ecopack1 | - |
| Grade | Industrial | - |
Key Features
- Non-dissipative overcurrent protection on high-side power MOSFETs
- Dual independent constant tOFF PWM current controllers
- Fast/slow decay mode selection and fast decay quasi-synchronous rectification
- Decoding logic for stepper motor full and half step drive
- Cross conduction protection and thermal shutdown
- Undervoltage lockout and integrated fast freewheeling diodes
Applications
The L6228D is primarily used for driving two-phase bipolar stepper motors in various industrial applications, including but not limited to:
- Industrial automation
- Medical equipment
- Printers and plotters
- Robotics and CNC machines
Q & A
- What is the operating supply voltage range of the L6228D?
The operating supply voltage range is from 8 to 52 V.
- What is the maximum output peak current of the L6228D?
The maximum output peak current is 2.8 A (1.4 A RMS).
- What type of protection does the L6228D offer?
The L6228D offers non-dissipative overcurrent protection and thermal shutdown.
- What is the operating frequency of the L6228D?
The operating frequency can be up to 100 KHz.
- What package types are available for the L6228D?
The L6228D is available in SO-24 packages.
- Is the L6228D RoHS compliant?
- What is the typical RDS(ON) value of the L6228D?
The typical RDS(ON) value is 0.73 Ω at Tj = 25 °C.
- Does the L6228D support fast and slow decay modes?
- What kind of logic does the L6228D use for stepper motor drive?
The L6228D uses decoding logic for stepper motor full and half step drive.
- Does the L6228D have integrated freewheeling diodes?
