Overview
The DRV8860APWR, produced by Texas Instruments, is an 8-channel low-side driver with a serial interface. This device is designed to operate with input voltages ranging from 8 to 38 volts and is suitable for various motor drive and load control applications. It features built-in protection mechanisms such as overcurrent protection, open load detection, thermal shutdown, and undervoltage lockout, ensuring robust and reliable operation. The DRV8860APWR is controlled via a simple serial interface, allowing for the configuration of internal register settings and the reading of fault status for each channel.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 8 V to 38 V |
| Number of Channels | 8 |
| Output Current per Channel | Up to 0.3 A |
| Protection Features | Overcurrent Protection, Open Load Detection, Thermal Shutdown, Undervoltage Lockout |
| Interface | Serial Interface (SPI) |
| Package Type | 16-TSSOP |
| ESD Protection | 500 V CDM, 250 V HBM |
| Operating Temperature Range | -40°C to 150°C |
Key Features
- Eight NMOS FETs with Overcurrent Protection: Each channel has built-in overcurrent protection that automatically turns off the channel if the current exceeds the OCP trigger level.
- Open Load Detection: Detects open load conditions and reports them through the fault register.
- Thermal Shutdown: Disables all outputs if the die temperature exceeds safe limits.
- Undervoltage Lockout: Disables the device if the input voltage falls below the undervoltage lockout threshold.
- Digital Noise Filter: Internal noise filter on all digital inputs to prevent unwanted noise frequencies.
- Configurable Energizing Time and PWM Duty Cycle: Controlled through the serial interface to optimize power efficiency.
- Daisy Chain Capability: Multiple devices can be connected to use a single serial interface.
Applications
The DRV8860APWR is suitable for a variety of applications, including motor drive systems, industrial automation, and any scenario requiring multiple low-side drivers with robust protection features. It is particularly useful in systems where precise control over output channels and protection against various fault conditions are critical.
Q & A
- What is the input voltage range of the DRV8860APWR?
The input voltage range is from 8 V to 38 V. - How many channels does the DRV8860APWR have?
The device has 8 channels. - What type of interface does the DRV8860APWR use?
The device uses a serial interface (SPI). - What protection features does the DRV8860APWR have?
The device features overcurrent protection, open load detection, thermal shutdown, and undervoltage lockout. - Can multiple DRV8860APWR devices be connected together?
Yes, multiple devices can be daisy-chained to use a single serial interface. - How is the device protected against ESD?
The device has 500 V CDM and 250 V HBM ESD protection. - What is the operating temperature range of the DRV8860APWR?
The operating temperature range is from -40°C to 150°C. - How is the output current controlled in the DRV8860APWR?
The output current can be controlled through the serial interface, configuring the energizing time and PWM duty cycle. - What happens when an overcurrent condition is detected?
When an overcurrent condition is detected, the corresponding channel is automatically turned off, and the nFAULT pin is set low. - How is thermal shutdown handled in the DRV8860APWR?
If the die temperature exceeds safe limits, all outputs are disabled until the temperature drops to a safe level.
