Overview
The L6205D, produced by STMicroelectronics, is a DMOS Dual Full Bridge driver designed for motor control applications. It is realized in MultiPower-BCD technology, which integrates isolated DMOS Power Transistors with CMOS and bipolar circuits on the same chip. This device is available in various packages, including PowerDIP20, PowerSO20, and SO20 (16+2+2). The L6205D features non-dissipative protection of the high side PowerMOSFETs and thermal shutdown, making it a robust solution for motor control systems.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VS) | VSA = VSB = VS | 8 | - | 52 | V |
| Output Peak Current | - | - | 5.6 A | - | A |
| Output DC Current | - | - | 2.8 A | - | A |
| RDS(ON) High-Side Switch | Tj = 25 °C | 0.34 | 0.4 | 0.53 | Ω |
| RDS(ON) Low-Side Switch | Tj = 25 °C | 0.28 | 0.34 | 0.47 | Ω |
| Operating Frequency | - | - | 100 kHz | - | Hz |
| Operating Junction Temperature | - | -25 | - | 125 | °C |
| Thermal Shutdown Temperature | - | - | 165 | - | °C |
Key Features
- Integrated fast free wheeling diodes
- Under voltage lockout (UVLO)
- Cross conduction protection
- Paralleled operation
- Non-dissipative overcurrent protection
- Thermal shutdown
- Operating supply voltage from 8 to 52V
- Low RDS(ON) of 0.3 Ω (typical value @ Tj = 25 °C)
Applications
The L6205D is designed for a wide range of motor control applications, including:
- Bipolar stepper motors
- Dual or quad DC motors
- Multiple DC motors
- A wide range of inductive loads
Q & A
- What is the operating supply voltage range of the L6205D?
The operating supply voltage range is from 8 to 52V.
- What is the maximum output peak current of the L6205D?
The maximum output peak current is 5.6A, with a DC current of 2.8A.
- What protection features does the L6205D include?
The L6205D includes non-dissipative overcurrent protection, thermal shutdown, under voltage lockout, and cross conduction protection.
- Can the outputs of the L6205D be paralleled?
- What is the typical RDS(ON) value of the high-side switch at 25 °C?
The typical RDS(ON) value of the high-side switch at 25 °C is 0.4 Ω.
- What is the maximum operating frequency of the L6205D?
The maximum operating frequency is up to 100 kHz.
- What is the thermal shutdown temperature of the L6205D?
The thermal shutdown temperature is typically 165 °C.
- Does the L6205D have integrated fast free wheeling diodes?
- What is the purpose of the under voltage lockout (UVLO) feature?
The UVLO feature shuts down the device when the supply voltage falls below 6V to prevent operation at undesirable low supply voltage levels.
- How does the overcurrent detection work in the L6205D?
The overcurrent detection circuit compares a small fraction of the output current with an internal reference current. When the output current exceeds the detection threshold, the device is protected against short circuits.
