![\"\"](\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2020\/09\/6612.jpg\")
Pin function of TB6612FNG <\/h2>\n\n\n\n![\"\"](\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2020\/09\/6612\u5f15\u811a\u56fe-1030x728.png\")
Ref: Pin function <\/a><\/figcaption><\/figure>\n\n\n\n- AIN1 \/ AIN2, BIN1 \/ BIN2, PWMA \/ PWMB are the input terminals of the\ncontrol signal, that is, the control signal is input from here. .<\/li>
- AO1\/A02, B01\/B02 are 2 motor control output terminals, that is,\noutput signals to control the motor.<\/li>
- The function of STBY is to control the chip in normal working or\nstandby state.<\/li>
- VM (4.5\uff5e15 V) and VCC (2.7\uff5e5.5 V) are motor drive voltage input and logic level input terminals\nrespectively.<\/li><\/ul>\n\n\n\n
Working mode of TB6612FNG<\/h2>\n\n\n\n![\"\"](\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2020\/09\/\u7535\u673a\u6a21\u5757.png\")
Ref: TB6612FNG Motor Control Unit <\/a><\/figcaption><\/figure><\/div>\n\n\n\nThe figure shows the motor control unit\ncomposed of TB6612FNG and AVR microcontroller.<\/p>\n\n\n\n
The single-chip timer generates 4 PWM outputs as AIN1\/AIN2 and BIN1\/BIN2 control signals. As shown in the figure, OCxA and 0CxB control the motors M1 and M2. Using the timer to output hardware PWM pulses allows the MCU CPU to participate in calculations only when changing the PWM duty cycle, which greatly reduces the burden of system calculations and the overhead of PWM software programming. Input pin PWMA, PWMB and STBY control the motor running or braking status and the device working status by I\/0 level. The circuit uses a 10\u00b5F electrolytic capacitor with a withstand voltage of 25 V and a 0.1\u00b5F capacitor for power supply filtering, and uses a power MOSFET to provide reverse connection protection for VM and VCC.<\/p>\n\n\n\n
Motor work module<\/h2>\n\n\n\n
TB6612FNG is a MOSFET-based H-bridge\nintegrated circuit, which is more efficient than a transistor H-bridge driver\nand has a stronger load output capability.<\/p>\n\n\n\n
<\/p>\n\n\n\n
The pulse width modulation method generates a PWM signal with a varying duty cycle, and realizes the speed control of the motor by quickly switching the output state of the driver. The size of the PWM duty cycle determines the average value of the output voltage, which in turn determines the speed of the motor. In this article, the unipolar, fixed frequency and wide PWM modulation method is adopted to ensure the stability of motor speed control. The logical truth table of TB6612FNG is shown in Table 1. When the device is working, the STBY pin is set to high level; IN1 and IN2 remain unchanged, the input signal of the PWM pin can be adjusted to control the unidirectional speed of the motor; the PWM pin is set to high level, and the input of IN1 and IN2 is adjusted The signal can be used for bidirectional speed control of the motor. The control logic of the A and B channels is the same.<\/p>\n\n\n\n![\"\"](\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2020\/09\/\u7535\u673a1-3.png\")
Ref: The pulse width modulation <\/a><\/figcaption><\/figure>\n\n\n\nThe 5 pins in the red part of the picture\ncontrol one motor, and the pins in the blue part control the other motor. Here,\nonly the A channel is analyzed. AO1 and AO2 are connected to the + and-of the\nmotor respectively. Then control the motor through PWMAA, IN2, AIN1. Among\nthem, PWM connects A to the PWM pin of the microcontroller, usually 10Khz PWM,\nand adjusts the speed of the motor by changing the duty cycle (the duty cycle\nis the ratio of the positive voltage time to the cycle in a cycle).<\/p>\n\n\n\n
The type of work can be divided into three situations:<\/p>\n\n\n\n
- AIN1=0, AIN2=1: The motor rotates in the reverse direction.<\/li>
- AIN1=1, AIN2=0: The motor rotates in the forward direction.<\/li>
- AIN1=0, AIN2=0: the motor stops.<\/li><\/ul>\n\n\n\n
In\naddition:<\/strong><\/p>\n\n\n\nConnect AIN1 to 3.3~5V, AIN2 to GND, and\nPWM to A 3.3~5V. This is equivalent to controlling the full duty cycle of the\nmotor to rotate forward.<\/p>\n\n\n\n
Connect AIN1 to GND, AIN2 to 3.3~5V, and PWM to A 3.3~5V. This is equivalent to controlling the reverse rotation of the motor at full duty cycle.<\/p>\n\n\n\n
Advantages of TB6612FNG<\/h2>\n\n\n\n
Independent\ntwo-way control of 2 DC motors<\/strong>: At the same time,\nit can provide sufficient output capacity, and it has advantages in operating\nperformance and energy consumption.<\/p>\n\n\n\nVery\nhigh integration:<\/strong> Therefore, it can be used as an\nideal motor drive device in an integrated and miniaturized motor control\nsystem.<\/p>\n\n\n\nHigh\nstarting current: <\/strong>Each channel outputs a continuous\ndrive current of up to 1.2 A, and the starting peak current is 2A\/3.2 A\n(continuous pulse\/single pulse).<\/p>\n\n\n\n
![\"\"](\"https:\/\/image.baidu.com\/search\/detail?ct=503316480&z=0&ipn=d&word=TB6612FNG&step_word=&hs=0&pn=6&spn=0&di=11770&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=1429505335%2C1064145925&os=2027510115%2C796306834&simid=0%2C0&adpicid=0&lpn=0&ln=151&fr=&fmq=1601212648725_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined©right=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimg3.tbcdn.cn%2Ftfscom%2Fi3%2F143813255%2FTB28dWep9BjpuFjy1XdXXaooVXa_!!143813255.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bcswo_z%26e3BvgAzdH3Fy57i7tAzdH3Fn0cm8c8AzdH3Fcc8dacnamd89_z%26e3Bip4s&gsm=7&rpstart=0&rpnum=0&islist=&querylist=&force=undefined\")
- AIN1 \/ AIN2, BIN1 \/ BIN2, PWMA \/ PWMB are the input terminals of the\ncontrol signal, that is, the control signal is input from here. .<\/li>
- AO1\/A02, B01\/B02 are 2 motor control output terminals, that is,\noutput signals to control the motor.<\/li>
- The function of STBY is to control the chip in normal working or\nstandby state.<\/li>
- VM (4.5\uff5e15 V) and VCC (2.7\uff5e5.5 V) are motor drive voltage input and logic level input terminals\nrespectively.<\/li><\/ul>\n\n\n\n
Working mode of TB6612FNG<\/h2>\n\n\n\n
Ref: TB6612FNG Motor Control Unit <\/a><\/figcaption><\/figure><\/div>\n\n\n\n The figure shows the motor control unit\ncomposed of TB6612FNG and AVR microcontroller.<\/p>\n\n\n\n
The single-chip timer generates 4 PWM outputs as AIN1\/AIN2 and BIN1\/BIN2 control signals. As shown in the figure, OCxA and 0CxB control the motors M1 and M2. Using the timer to output hardware PWM pulses allows the MCU CPU to participate in calculations only when changing the PWM duty cycle, which greatly reduces the burden of system calculations and the overhead of PWM software programming. Input pin PWMA, PWMB and STBY control the motor running or braking status and the device working status by I\/0 level. The circuit uses a 10\u00b5F electrolytic capacitor with a withstand voltage of 25 V and a 0.1\u00b5F capacitor for power supply filtering, and uses a power MOSFET to provide reverse connection protection for VM and VCC.<\/p>\n\n\n\n
Motor work module<\/h2>\n\n\n\n
TB6612FNG is a MOSFET-based H-bridge\nintegrated circuit, which is more efficient than a transistor H-bridge driver\nand has a stronger load output capability.<\/p>\n\n\n\n
<\/p>\n\n\n\n
The pulse width modulation method generates a PWM signal with a varying duty cycle, and realizes the speed control of the motor by quickly switching the output state of the driver. The size of the PWM duty cycle determines the average value of the output voltage, which in turn determines the speed of the motor. In this article, the unipolar, fixed frequency and wide PWM modulation method is adopted to ensure the stability of motor speed control. The logical truth table of TB6612FNG is shown in Table 1. When the device is working, the STBY pin is set to high level; IN1 and IN2 remain unchanged, the input signal of the PWM pin can be adjusted to control the unidirectional speed of the motor; the PWM pin is set to high level, and the input of IN1 and IN2 is adjusted The signal can be used for bidirectional speed control of the motor. The control logic of the A and B channels is the same.<\/p>\n\n\n\n
Ref: The pulse width modulation <\/a><\/figcaption><\/figure>\n\n\n\n The 5 pins in the red part of the picture\ncontrol one motor, and the pins in the blue part control the other motor. Here,\nonly the A channel is analyzed. AO1 and AO2 are connected to the + and-of the\nmotor respectively. Then control the motor through PWMAA, IN2, AIN1. Among\nthem, PWM connects A to the PWM pin of the microcontroller, usually 10Khz PWM,\nand adjusts the speed of the motor by changing the duty cycle (the duty cycle\nis the ratio of the positive voltage time to the cycle in a cycle).<\/p>\n\n\n\n
The type of work can be divided into three situations:<\/p>\n\n\n\n
- AIN1=0, AIN2=1: The motor rotates in the reverse direction.<\/li>
- AIN1=1, AIN2=0: The motor rotates in the forward direction.<\/li>
- AIN1=0, AIN2=0: the motor stops.<\/li><\/ul>\n\n\n\n
In\naddition:<\/strong><\/p>\n\n\n\n
Connect AIN1 to 3.3~5V, AIN2 to GND, and\nPWM to A 3.3~5V. This is equivalent to controlling the full duty cycle of the\nmotor to rotate forward.<\/p>\n\n\n\n
Connect AIN1 to GND, AIN2 to 3.3~5V, and PWM to A 3.3~5V. This is equivalent to controlling the reverse rotation of the motor at full duty cycle.<\/p>\n\n\n\n
Advantages of TB6612FNG<\/h2>\n\n\n\n
Independent\ntwo-way control of 2 DC motors<\/strong>: At the same time,\nit can provide sufficient output capacity, and it has advantages in operating\nperformance and energy consumption.<\/p>\n\n\n\n
Very\nhigh integration:<\/strong> Therefore, it can be used as an\nideal motor drive device in an integrated and miniaturized motor control\nsystem.<\/p>\n\n\n\n
High\nstarting current: <\/strong>Each channel outputs a continuous\ndrive current of up to 1.2 A, and the starting peak current is 2A\/3.2 A\n(continuous pulse\/single pulse).<\/p>\n\n\n\n
![The pulse width modulation <\/a><\/figcaption><\/figure>\n\n\n\nThe 5 pins in the red part of the picture\ncontrol one motor, and the pins in the blue part control the other motor. Here,\nonly the A channel is analyzed. AO1 and AO2 are connected to the + and-of the\nmotor respectively. Then control the motor through PWMAA, IN2, AIN1. Among\nthem, PWM connects A to the PWM pin of the microcontroller, usually 10Khz PWM,\nand adjusts the speed of the motor by changing the duty cycle (the duty cycle\nis the ratio of the positive voltage time to the cycle in a cycle).<\/p>\n\n\n\nThe type of work can be divided into three situations:<\/p>\n\n\n\nAIN1=0, AIN2=1: The motor rotates in the reverse direction.<\/li>AIN1=1, AIN2=0: The motor rotates in the forward direction.<\/li>AIN1=0, AIN2=0: the motor stops.<\/li><\/ul>\n\n\n\nIn\naddition:<\/strong><\/p>\n\n\n\nConnect AIN1 to 3.3~5V, AIN2 to GND, and\nPWM to A 3.3~5V. This is equivalent to controlling the full duty cycle of the\nmotor to rotate forward.<\/p>\n\n\n\nConnect AIN1 to GND, AIN2 to 3.3~5V, and PWM to A 3.3~5V. This is equivalent to controlling the reverse rotation of the motor at full duty cycle.<\/p>\n\n\n\nAdvantages of TB6612FNG<\/h2>\n\n\n\nIndependent\ntwo-way control of 2 DC motors<\/strong>: At the same time,\nit can provide sufficient output capacity, and it has advantages in operating\nperformance and energy consumption.<\/p>\n\n\n\nVery\nhigh integration:<\/strong> Therefore, it can be used as an\nideal motor drive device in an integrated and miniaturized motor control\nsystem.<\/p>\n\n\n\nHigh\nstarting current: <\/strong>Each channel outputs a continuous\ndrive current of up to 1.2 A, and the starting peak current is 2A\/3.2 A\n(continuous pulse\/single pulse).<\/p>\n\n\n\nHigh\nsupport frequency:<\/strong> Its PWM support frequency is up\nto 100 kHz.<\/p>\n\n\n\nWide operating temperature range: <\/strong>on-chip low-voltage detection circuit and thermal shutdown protection circuit; operating temperature: -20\uff5e85\u2103;<\/p>\n\n\n\nSome suggestions about TB6612FNG<\/h2>\n\n\n\n1. When the output state of the device is\nswitched between driving\/braking, a good linear relationship can be maintained\nbetween the motor speed and the PWM duty cycle, and its operation control\neffect is better than that of the device switching between driving\/stopping.<\/p>\n\n\n\n2. When fPWM is high, the motor runs\ncontinuously and smoothly with low noise, but the power consumption of the\ndevice will increase with increasing frequency; when fPWM is low, it will help\nreduce power consumption and improve the speed regulation linearity, but it is too\nlow The frequency may cause a decrease in the continuity of the motor rotation.\nUsually when fPWM>1 kHz, the device can control the motor stably.<\/p>\n\n\n\n3. Excessive PWM duty cycle will affect the\nstability of the motor drive current and the output load capacity of the\ndevice. The duty cycle range should be set reasonably according to different\nspeed requirements.<\/p>\n\n\n\n4. If the operating temperature of the device is too high, it will result in a decrease in its output power. In the circuit PCB design, sufficient copper area should be ensured, which helps to dissipate heat and facilitate the stable operation of the device for a long time.<\/p>\n\n\n\nBy the way, Seeed Fusion has a rich component library including TB6612FNG<\/a>.<\/p>\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"TB6612FNG, produced by Toshiba Semiconductor, is a DC motor drive device. It has a high-current<\/p>\n","protected":false},"author":40,"featured_media":36439,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"iawp_total_views":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-36438","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"\nBrief introduction of tb6612fng and its design of DC motor control system with single chip microcomputer - Latest News from Seeed Studio<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.seeedstudio.com\/blog\/2020\/09\/30\/brief-introduction-of-tb6612fng-and-its-design-of-dc-motor-control-system-with-single-chip-microcomputer\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Brief introduction of tb6612fng and its design of DC motor control system with single chip microcomputer - Latest News from Seeed Studio\" \/>\n<meta property=\"og:description\" content=\"TB6612FNG, produced by Toshiba Semiconductor, is a DC motor drive device. 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