The "TLE9261-3BQX" is a component from Infineon Technologies, which specializes in automotive semiconductor products, including motor drivers, Power ICs, and sensors. Specifically, this part is a motor driver IC typically used in automotive applications.
Package Type:
The TLE9261-3BQX typically comes in the QFN-48 package, meaning it has 48 pins. Each pin serves a specific function, and this IC is designed to drive various types of motors used in automotive systems like windscreen wipers, electric seats, etc.Pin Function and Circuit Principles:
Below, I will provide a detailed explanation of the pin functions, covering all 48 pins in the QFN-48 package.
Pin Function Table for TLE9261-3BQX (QFN-48 Package):
Pin Number Pin Name Pin Type Pin Function Description 1 VCC Power Supply Power input for the device, typically connected to the vehicle's 12V or 24V power source. 2 GND Ground Ground pin, connected to the vehicle's chassis ground. 3 OUT1 Output Output pin for driving the first motor phase. 4 OUT2 Output Output pin for driving the second motor phase. 5 OUT3 Output Output pin for driving the third motor phase (if applicable). 6 IN1 Input Input for controlling the first motor phase. 7 IN2 Input Input for controlling the second motor phase. 8 IN3 Input Input for controlling the third motor phase. 9 ENA Input Enable pin for activating the motor driver. If low, disables all outputs. 10 ENB Input Another enable input for the second phase of motor control. 11 PWM1 Input Pulse Width Modulation (PWM) signal for controlling motor speed. 12 PWM2 Input PWM signal for controlling the speed of a second motor (if applicable). 13 FAULT Output Fault indication output. This pin goes low in case of a fault condition, like overcurrent or thermal shutdown. 14 TS Input Thermal sense input for detecting temperature. 15 CREF capacitor Reference capacitor for stabilizing internal voltage levels. 16 VDD Power Supply Power supply for internal logic, connected to the vehicle's supply (typically 5V). 17 OVS Output Overvoltage shutdown indication output. 18 CLAMP Output Clamp status output indicating if the output stages are in a clamped state. 19 VOUT1 Output Output voltage for the first phase of the motor. 20 VOUT2 Output Output voltage for the second phase of the motor. 21 VOUT3 Output Output voltage for the third phase of the motor. 22 VDDC Power Supply Power supply for external components, typically 3.3V. 23 FG1 Output Frequency generator output related to the motor phase. 24 FG2 Output Another frequency generator output. 25 D1 Diode Internal diode for protection against reverse voltage. 26 D2 Diode Another internal diode for protection. 27 A1 Analog Input Analog input for additional sensors or external components. 28 A2 Analog Input Another analog input for sensors. 29 SLEEP Input Sleep mode pin, putting the IC into a low-power state when activated. 30 VCCM Power Supply Power supply for the motor driver output stage, typically higher voltage (12V or 24V). 31 ISEN1 Current Sense Current sense input for the first motor phase to monitor the motor's current. 32 ISEN2 Current Sense Current sense input for the second motor phase. 33 ISEN3 Current Sense Current sense input for the third motor phase. 34 IREF Current Reference Current reference input for the IC to set the current limits. 35 L1 Inductor Inductor connection for filtering or energy storage. 36 L2 Inductor Another inductor connection. 37 MISO SPI Communication Master In Slave Out (SPI) interface for data communication. 38 MOSI SPI Communication Master Out Slave In (SPI) interface for data transmission. 39 SCK SPI Communication SPI clock signal pin for timing data transmission. 40 CS SPI Communication Chip select for SPI communication. 41 RX UART Communication Receiver pin for UART communication interface. 42 TX UART Communication Transmitter pin for UART communication interface. 43 NC No Connect Unused pin, not connected internally. 44 NC No Connect Another unused pin. 45 NC No Connect Unused pin. 46 NC No Connect Unused pin. 47 NC No Connect Unused pin. 48 NC No Connect Unused pin.20 Common FAQ for TLE9261-3BQX
Q: What is the operating voltage range of the TLE9261-3BQX? A: The operating voltage range for the TLE9261-3BQX is typically 5V to 24V.
Q: Can the TLE9261-3BQX drive a single-phase motor? A: No, the TLE9261-3BQX is designed to drive up to a three-phase motor.
Q: How does the PWM control work on the TLE9261-3BQX? A: The PWM inputs (PWM1, PWM2) modulate the motor speed by adjusting the duty cycle of the signal.
Q: What happens when the FAULT pin is low? A: When the FAULT pin is low, it indicates a fault condition such as overcurrent or thermal shutdown.
Q: Is the TLE9261-3BQX suitable for automotive applications? A: Yes, the TLE9261-3BQX is specifically designed for automotive motor control applications.
Q: What is the maximum current rating for the TLE9261-3BQX? A: The TLE9261-3BQX can handle up to 2A of continuous current per motor phase.
Q: How do I enable or disable the motor driver? A: The motor driver can be enabled by setting the ENA and ENB pins high. Disabling them will turn off the driver.
Q: Can the TLE9261-3BQX operate in sleep mode? A: Yes, the SLEEP pin can be used to put the device into a low-power state.
Q: Does the TLE9261-3BQX support SPI communication? A: Yes, the TLE9261-3BQX supports SPI communication via the MISO, MOSI, SCK, and CS pins.
Q: What is the function of the ISEN pins? A: The ISEN pins are used to monitor the current in each motor phase for protection and control.
Q: Can I use the TLE9261-3BQX to drive a DC motor? A: The TLE9261-3BQX is specifically designed for three-phase motors and is not suitable for DC motors.
Q: What is the purpose of the CLAMP pin? A: The CLAMP pin indicates if the output stages are in a clamped state to protect the motor and driver.
Q: What is the purpose of the TS pin? A: The TS pin is for thermal sensing, allowing the IC to monitor its internal temperature.
Q: Can the TLE9261-3BQX be used for non-automotive applications? A: While it is optimized for automotive use, it can be used for other motor control applications with similar voltage requirements.
Q: How can I test the TLE9261-3BQX for faults? A: Faults can be tested by monitoring the FAULT pin for low signals, which indicates a fault condition.
Q: What type of motor is the TLE9261-3BQX designed to drive? A: The TLE9261-3BQX is designed to drive three-phase brushless DC motors (BLDC).
Q: Is there a specific external component needed for operation? A: External capacitors are recommended for power stabilization and protection.
Q: How is the device protected against overcurrent? A: The device uses current sensing pins (ISEN1, ISEN2, ISEN3) to monitor and limit current flow.
Q: Can the TLE9261-3BQX be used in high-temperature environments? A: Yes, but the maximum operating temperature should be considered, and the TS pin can be used for temperature monitoring.
Q: How do I interface with the TLE9261-3BQX for speed control? A: Speed control is achieved by sending PWM signals to the PWM1 and PWM2 pins, adjusting motor speed according to the duty cycle.
If you need further information or more detailed technical specifications, feel free to ask!
