Overview
The STDRIVE101 is a low-voltage gate driver designed by STMicroelectronics, specifically tailored for driving three-phase brushless motors. This single-chip device integrates three half-bridge gate drivers for N-channel power MOSFETs, each capable of sinking and sourcing 600 mA of current. It features a low drop linear regulator that generates the supply voltage for both low-side and high-side gate drivers through a bootstrap circuitry. The device includes Under Voltage Lock Out (UVLO) protection on both low-side and high-side sections to prevent the power switches from operating under inefficient or dangerous conditions.
Key Specifications
| Parameter | Specification |
|---|---|
| Operating Voltage | 5.5 V to 75 V |
| Current Capability | 600 mA (sink/source) |
| Control Logic Voltage | 3.3 V and 5 V |
| Input Strategies | ENx/INx with adjustable deadtime generation, INHx/INLx with interlocking |
| Propagation Delay | 40 ns |
| LDO Linear Regulator | 12 V, 50 mA max. |
| Package | VFQFPN 4x4 24 leads |
| UVLO and Thermal Shutdown | Yes |
| Standby Mode | Yes, for low current consumption |
Key Features
- Integrated bootstrap diodes
- Embedded VDS monitoring for each external MOSFET
- Overcurrent comparator
- UVLO and thermal shutdown protection
- Standby mode for low current consumption operation
- Matched propagation delay for all channels
- Very short propagation delay: 40 ns
- Two input strategies: ENx/INx with adjustable deadtime generation, INHx/INLx with interlocking
Applications
The STDRIVE101 is suitable for various applications, including:
- Industrial motor control systems
- Personal electronics such as power tools and appliances
- Battery-operated BLDC/PMSM power tools
Q & A
- What is the primary function of the STDRIVE101?
The STDRIVE101 is a low-voltage gate driver designed to drive three-phase brushless motors.
- What is the current capability of each half-bridge gate driver in the STDRIVE101?
Each half-bridge gate driver can sink and source up to 600 mA of current.
- What are the input strategies supported by the STDRIVE101?
The device supports two input strategies: ENx/INx with adjustable deadtime generation and INHx/INLx with interlocking.
- Does the STDRIVE101 have built-in protection features?
Yes, it includes UVLO protection, thermal shutdown, and overcurrent protection.
- What is the operating voltage range of the STDRIVE101?
The operating voltage range is from 5.5 V to 75 V.
- What type of package is the STDRIVE101 available in?
The device is available in a VFQFPN 4x4 24 leads package.
- Can the STDRIVE101 be put into a standby mode?
Yes, the device can be put into a standby mode to reduce power consumption.
- What is the purpose of the integrated bootstrap diodes in the STDRIVE101?
The integrated bootstrap diodes are used to generate the supply voltage for both low-side and high-side gate drivers through a bootstrap circuitry.
- Does the STDRIVE101 support sensorless and sensor-based motor control algorithms?
Yes, it supports both sensorless and sensor-based (using Hall sensors) motor control algorithms.
- What are some common applications of the STDRIVE101?
Common applications include industrial motor control systems, personal electronics like power tools, and battery-operated BLDC/PMSM power tools.
