Overview
The L6227D, produced by STMicroelectronics, is a DMOS dual full bridge driver designed for motor control applications. It is realized in BCD technology, combining isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. This device is particularly suited for controlling bipolar stepper motors and dual DC motors. The L6227D features two independent constant off-time PWM current controllers, which perform the chopping regulation necessary for efficient motor control.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Supply Voltage | 8 | - | 52 | V |
| Output Peak Current | - | 2.8 | - | A |
| Output DC Current | - | 1.4 | - | A |
| RDS(ON) | - | 0.73 | - | Ω |
| Operating Frequency | - | - | 100 KHz | - |
| Operating Temperature Range | -40 | - | 150 | °C |
| Package | - | - | SO-24 | - |
Key Features
- Operating supply voltage from 8 to 52 V
- 2.8 A output peak current (1.4 A DC)
- RDS(ON) 0.73 Ω typical value at Tj = 25 °C
- Operating frequency up to 100 KHz
- Non-dissipative overcurrent protection
- Dual independent constant off-time PWM current controllers
- Slow decay synchronous rectification
- Cross conduction protection
- Thermal shutdown
- Undervoltage lockout
- Integrated fast freewheeling diodes
Applications
- Bipolar stepper motor control
- Dual DC motor control
Q & A
- What is the operating supply voltage range of the L6227D?
The operating supply voltage range is from 8 to 52 V.
- What is the maximum output peak current of the L6227D?
The maximum output peak current is 2.8 A, with a DC current of 1.4 A.
- What is the typical RDS(ON) value of the L6227D at 25 °C?
The typical RDS(ON) value is 0.73 Ω at 25 °C.
- What is the maximum operating frequency of the L6227D?
The maximum operating frequency is up to 100 KHz.
- Does the L6227D have overcurrent protection?
Yes, it features non-dissipative overcurrent protection.
- What type of PWM current controllers does the L6227D include?
The L6227D includes dual independent constant off-time PWM current controllers.
- What kind of rectification does the L6227D support?
The L6227D supports slow decay synchronous rectification.
- Does the L6227D have thermal shutdown protection?
Yes, it includes thermal shutdown protection.
- What type of diodes are integrated into the L6227D?
The L6227D includes integrated fast freewheeling diodes.
- In what packages is the L6227D available?
The L6227D is available in SO-24 and PowerSO36 packages.
