Overview
The L9907TR, produced by STMicroelectronics, is a highly integrated gate driver unit designed for controlling 6 N-channel FETs in brushless DC (BLDC) motor applications, particularly in the automotive sector. This device supports both 6-step and Field-Oriented Control (FOC) motor control strategies. Each pre-driver channel can be controlled independently, allowing for the implementation of various electric motor control strategies. The L9907TR features a boost regulator to ensure full operation down to 6 V battery voltage and includes two programmable differential current sense amplifiers for maximum flexibility in phase or ground current sensing.
Key Specifications
| Parameter | Specification |
|---|---|
| Supply Voltage | 4.2 V to 54 V |
| FET High-Side Driver Pins Voltage Range | -7 V to 90 V |
| Logic Level Compatibility | 3.3 V and 5 V |
| Logic Pins Voltage Withstand | 35 V |
| Gate Drivers | 3 low-side + 3 high-side independent gate drivers |
| PWM Operation Frequency | Up to 20 kHz |
| Gate Driver Controlled Current | Adjustable up to 600 mA |
| Current Sense Amplifiers | 2 programmable differential current sense amplifiers |
| SPI Interface | 8 MHz, 16-bit |
| Package | TQFP 64 (10x10x1.0 mm) |
| Operating Temperature Range | -40°C to 150°C |
Key Features
- AEC-Q100 qualified for automotive applications
- Low standby current consumption
- Boost regulator for full Rdson down to 6 V battery voltage
- Programmable parameters via SPI: cross conduction dead time, external MOSFET gate current level, current sense amplifier mode, offset, and gain
- Protection and diagnostic features: gate to source output voltage limit, gate to source passive switch off, FET driver supply UV diagnostic, OV/UV diagnostic and protection on VB and VCC, external MOSFET overcurrent protection, over-temperature diagnostic and shutdown
- Compatible with 3.3 V and 5 V logic levels
- All logic pins withstand 35 V
Applications
- Electric power steering
- Electric brake booster
- Generic brushless DC motor driving
Q & A
- What is the primary function of the L9907TR? The L9907TR is a gate driver unit designed to control 6 N-channel FETs for brushless DC motors in automotive applications.
- What are the supported motor control strategies? The L9907TR supports both 6-step and Field-Oriented Control (FOC) motor control strategies.
- What is the supply voltage range of the L9907TR? The supply voltage range is from 4.2 V to 54 V.
- How many gate drivers does the L9907TR have? The L9907TR has 3 low-side and 3 high-side independent gate drivers.
- What is the maximum PWM operation frequency? The maximum PWM operation frequency is up to 20 kHz.
- What type of interface does the L9907TR use for configuration? The L9907TR uses an 8 MHz, 16-bit SPI interface for configuration.
- What kind of protection and diagnostic features does the L9907TR offer? The L9907TR offers various protection and diagnostic features including gate to source output voltage limit, gate to source passive switch off, FET driver supply UV diagnostic, OV/UV diagnostic and protection on VB and VCC, external MOSFET overcurrent protection, and over-temperature diagnostic and shutdown.
- What are the typical applications of the L9907TR? Typical applications include electric power steering, electric brake booster, and generic brushless DC motor driving.
- Is the L9907TR AEC-Q100 qualified? Yes, the L9907TR is AEC-Q100 qualified for automotive applications.
- What is the package type of the L9907TR? The package type is TQFP 64 (10x10x1.0 mm).
