A Complete Guide to the TB6600HG
26 March 2024
Ⅲ. Operating conditions of TB6600HG
Ⅳ. How to connect TB6600HG to the control system?
Ⅵ. Pin configuration of TB6600HG
Ⅶ. Function description of TB6600HG
Ⅸ. Common faults and solutions of TB6600HG
TB6600HG is a PWM chopper type single-chip bipolar sinusoidal microstepping motor driver. It can achieve forward and reverse rotation control through 2-phase, 1-2-phase, W1-2-phase, 2W1-2-phase, and 4W1-2-phase excitation modes. 2-phase bipolar stepper motors are driven solely by a low-vibration, high-efficiency clock signal.
Alternatives and equivalents:
• TB6600FG
• TB67S128FTG
• L6258EX
• Part Status: Active
• Packaging: Tray
• Package / Case: HZIP-25
• Manufacturer: Toshiba
• Operating Supply Current: 4.2 mA
• Operating Supply Voltage: 2 V to 5.5 V
• Load Voltage Rating: 8 V to 42 V
• Number of Outputs: 2 Outputs
• Pd - Power Dissipation: 40 W
• Mounting Style: Through Hole
• Package Length/Width/Height: 29.3mm(Max)/4.5mm/15.7mm
• Product Category: Motor / Motion / Ignition Controllers & Drivers
(TA = -30°C to 85°C)
Note: Two Vcc terminals should be programmed the same voltage. The maximum current of the operating range can not be necessarily conducted depending on various conditions because output current is limited by the power dissipation PD. Make sure to avoid using the IC in the condition that would cause the temperature to exceed Tj (avg.) =107°C.
The power supply voltage of 42 V and the output current of 4.5 A are the maximum values of operating range. Please design the circuit with enough derating within this range by considering the power supply variation, the external resistance, and the electrical characteristics of the IC. In case of exceeding the power supply voltage of 42 V and the output current of 4.5 A, the IC will not operate normally.
1. Power connection: First, make sure to provide appropriate power supply to TB6600HG. When powering TB6600HG, you usually need to connect two pins: VCC (positive power supply) and GND (ground wire). The VCC pin is responsible for providing the voltage required to drive the chip, while the GND pin serves as the reference ground level. We need to ensure that the power supply is stable and meets the specifications of the TB6600HG.
2. Signal connection: According to the specific needs of the control system, we need to connect the control signal to the corresponding pin of the TB6600HG driver chip. These control signals usually include direction control signals and step pulse signals, etc., which are responsible for instructing how the motor acts, including the direction of rotation and the speed of rotation.
3. Motor connection: We need to be particularly careful when connecting the motor to the TB6600HG driver chip. The two wires of the motor, usually red and black, represent the positive and negative poles of the motor respectively. The red wire usually connects to the positive terminal of the motor, while the black wire connects to the negative terminal.
4. Feedback connection (optional): If an encoder is used for feedback control, we also need to connect the output signal of the encoder to the control system. This typically includes the outputs of Phase A, Phase B, and Phase Z (if available).
5. Grounding: We need to ensure that the common ground wire of all equipment is connected correctly to avoid interference and damage.
6. Initialization settings: After the connection is complete, we need to initialize the settings of the TB6600HG to ensure that it works correctly. This may include setting current limits, stepping modes, etc.
• Adopt an enlarged radiator for good heat dissipation
• Subdivision setup instructions are printed on the back of the board
• With output short circuit protection function, worry-free use
• Adopt 6N137 high-speed optical coupling to ensure high speed without loss of synchronization
• Output current is steplessly adjustable to meet your various application needs
• Using common anode input mode, there are two input terminals, making wiring more convenient
1. Excitation settings
The excitation mode can be selected from the following eight modes using the M1, M2 and M3 inputs. When M1, M2, or M3 inputs are shifted during motor operation, a new excitation mode initiates from the initial mode, potentially disrupting the continuity of the output current waveform.
Note: To change the exciting mode by changing M1, M2, and M3, make sure not to set M1 = M2 = M3 = L or M1 = M2 = M3 = H.
Standby mode
The operation mode moves to the standby mode under the condition M1 = M2 = M3 = L or M1 = M2 = M3 = H. The power consumption is minimized by turning off all the operations except protecting operation. In standby mode, output terminal MO is HZ. Standby mode is released by changing the state of M1=M2=M3=L and M1=M2=M3=H to other state. Input signal is not accepted for about 200 μs after releasing the standby mode.
2. Decay mode
Charging and discharging a current in PWM mode typically require about five cycles in OSCM. The 40 percent fast decay mode is initiated by inducing decay within the final two cycles of fast decay mode, with the ratio of 40 percent remaining consistently fixed. The relation between the master clock frequency (fMCLK), the OSCM frequency (fOSCM) and the PWM frequency (fchop) is shown as follows:
fOSCM = 1/20×fMCLK
fchop = 1/100×fMCLK
When Rosc=51kΩ, the master clock=4MHz, OSCM=200kHz, the frequency of PWM(fchop)=40kHz.
3. Initial mode
When RESET is used, the phase currents are as follows.
Current direction is defined as follows.
OUT1A → OUT2A: Forward direction
OUT1B → OUT2B: Forward direction
Listed below are some applications of TB6600HG.
• Tail lights
• Hospitality buildings
• Large outdoor LED display
• Alternative to HID lights
• Industrial high-bay lights
• Large format LED backlighting
• Display LED backlighting
• Camera-enabled smartphones
• Step-up or step-down driver topologies
The following lists some common faults about TB6600HG and their solutions to help you take quick action when encountering faults and safeguard the normal operation of the device.
Failure one: Driver chip overheating
The TB6600HG chip itself is too hot, probably due to excessive load or poor heat dissipation conditions.
Solution: Enhance heat dissipation
We need to add heat sinks or fans on the driver chip and motor to ensure that they can fully dissipate heat while working. At the same time, we need to keep the environment around the driver chip and motor well ventilated to avoid overheating.
Failure two: Motor rotates in the wrong direction
After the motor receives the drive signal, the direction of rotation is not in line with the expected, it may be the control signal is wrong or the drive chip is not properly configured.
Solution: Check the control signal
We need to carefully check the control signals sent to the TB6600HG to ensure that the direction control signal and pulse signal are correct. If a microcontroller is used to send the signals, please check the program code and pin configuration.
Failure three: Motor fails to rotate
The motor does not respond after receiving the drive signal, it may be that the driver chip is not working properly or there is a problem with the connection between the motor and the driver chip.
Solution: Check the power supply and connection
We need to make sure that the power supply of the TB6600HG is normal and the connection between the motor and the driver chip is solid. We check the voltage and current in the circuit by using a multimeter to make sure they are in the normal range.
Failure four: Serious motor heating
The motor generates excessive heat during operation, which may be caused by excessive current or poor heat dissipation.
Solution: Adjust the current setting
If the motor is generating serious heat, we can try to reduce the output current of the driver chip. By adjusting the current setting pin of TB6600HG, we can effectively limit the size of the output current, which in turn reduces the burden on the motor and ensures stable and safe operation of the motor.
Frequently Asked Questions
1. What is the operating temperature range of TB6600HG?
The operating temperature of TB6600HG ranges from -30°C to 85°C.
2. What is TB6600HG?
TB6600HG is a type of stepper motor driver, designed to control stepper motors in various applications such as CNC machines, 3D printers, robotics, and automation systems.
3. What are the key features of TB6600HG?
TB6600HG features include adjustable motor current, step resolution settings, built-in overheating protection, and opto-isolated inputs for signal control.
