Overview
The L6227PDTR, produced by STMicroelectronics, is a DMOS dual full bridge driver designed for motor control applications. This device is realized in BCD (Bipolar, CMOS, DMOS) technology, combining isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. It is particularly suited for controlling bipolar stepper motors and dual DC motors. The L6227 features advanced functionalities such as non-dissipative overcurrent protection, slow decay synchronous rectification, and thermal shutdown, making it a robust and efficient solution for various motor control needs.
Key Specifications
| Parameter | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Operating Supply Voltage | VSA = VSB = VS | 8 | - | 52 | V |
| Output Peak Current | - | - | 2.8 A | - | A |
| RDS(ON) | Tj = 25 °C | - | 0.73 Ω | - | Ω |
| Operating Frequency | - | - | - | 100 KHz | Hz |
| Quiescent Supply Current | All bridges OFF; Tj = -25 °C to 125 °C | - | 5 mA | 10 mA | mA |
| Thermal Shutdown Temperature | - | - | - | 165 °C | °C |
Key Features
- Operating supply voltage from 8 to 52 V
- 2.8 A output peak current (1.4 A DC)
- Non-dissipative overcurrent protection
- Dual independent constant tOFF PWM current controllers
- Slow decay synchronous rectification
- Cross conduction protection
- Thermal shutdown and 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 L6227PDTR?
The operating supply voltage range is from 8 to 52 V.
- What is the maximum output peak current of the L6227PDTR?
The maximum output peak current is 2.8 A.
- Does the L6227PDTR have overcurrent protection?
Yes, it features non-dissipative overcurrent protection.
- What type of PWM current controllers does the L6227PDTR include?
The device includes dual independent constant tOFF PWM current controllers.
- What is the thermal shutdown temperature of the L6227PDTR?
The thermal shutdown temperature is 165 °C.
- What types of motors can the L6227PDTR control?
The L6227PDTR can control bipolar stepper motors and dual DC motors.
- Does the L6227PDTR have integrated freewheeling diodes?
Yes, it has integrated fast freewheeling diodes.
- What is the typical RDS(ON) value of the L6227PDTR at 25 °C?
The typical RDS(ON) value is 0.73 Ω.
- What is the maximum operating frequency of the L6227PDTR?
The maximum operating frequency is up to 100 KHz.
- How does the L6227PDTR protect against cross conduction?
The device protects against cross conduction using a deadtime between the switch off and switch on of the power MOS in one leg of a bridge.
