Overview
The L6207D, produced by STMicroelectronics, is a DMOS dual full bridge driver designed specifically for motor control applications. It is realized in BCD (Bipolar, CMOS, DMOS) technology, which integrates 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. It features advanced PWM current controllers, non-dissipative overcurrent protection, and thermal shutdown, making it a robust and reliable choice for various motor control scenarios.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Supply Voltage | 8 | - | 52 | V |
| Output Peak Current | - | 5.6 A | - | A |
| Output DC Current | - | 2.8 A | - | A |
| RDS(ON) High-Side Switch | - | 0.34 Ω | 0.4 Ω | Ω |
| RDS(ON) Low-Side Switch | - | 0.28 Ω | 0.34 Ω | Ω |
| Operating Frequency | - | - | 100 KHz | Hz |
| Thermal Shutdown Temperature | - | - | 165 °C | °C |
Key Features
- Operating supply voltage from 8 to 52 V
- 5.6 A output peak current (2.8 A DC)
- RDS(ON) of 0.3 Ω typical value at Tj = 25 °C
- Operating frequency up to 100 KHz
- Non-dissipative overcurrent protection
- Dual independent constant tOFF 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 L6207D?
The operating supply voltage range is from 8 to 52 V. - What is the peak output current of the L6207D?
The peak output current is 5.6 A, with a DC current of 2.8 A. - What is the typical RDS(ON) of the high-side switch?
The typical RDS(ON) of the high-side switch is 0.34 Ω at Tj = 25 °C. - What is the maximum operating frequency of the L6207D?
The maximum operating frequency is up to 100 KHz. - Does the L6207D have thermal protection?
Yes, the L6207D integrates thermal shutdown protection that activates at a junction temperature of 165 °C. - How does the overcurrent protection work in the L6207D?
The overcurrent protection is non-dissipative and uses an internal sensing element to detect high currents, triggering a fault condition when the current exceeds the detection threshold. - What type of PWM current control does the L6207D use?
The L6207D uses dual independent constant tOFF PWM current controllers. - What are the logic input compatibility and voltage levels for the L6207D?
The logic inputs are TTL/CMOS compatible, with low level logic input voltage ranging from -0.3 to 0.8 V and high level logic input voltage ranging from 2 to 7 V. - How should the power and signal grounds be handled in the PCB layout?
It is recommended to keep the power ground and signal ground separated on the PCB. - What is the purpose of the internal blanking time in the L6207D?
The internal blanking time inhibits the comparator output to prevent premature retriggering of the monostable due to current spikes from the freewheeling diodes.
