TB67H450FNG/AFNG POS machine scheme and electric water valve control scheme

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Author：netwing Time：2024-04-28 Number Of Views：

Printer POS machine solution
In recent years, with the sustained high-speed growth of China's economy, the continuous promotion of electronic information management such as the "Three Gold Project", and the continuous improvement of service levels in industries such as commerce/retail, finance, communication, and transportation, the demand for label printers has rapidly increased. At present, the application of thermal label printers in China has entered a period of rapid popularization, and the market size continues to grow rapidly.
Evaluation Board
application area
Printing of queuing machines, shopping mall POS cash registers, instruments and meters, postal and telecommunications fields, medical equipment, financial equipment, tax control cash machines, lottery machines, and various self-service terminal devices
characteristic
The rated working voltage range is 20-24V, suitable for various printer adapters. The power input is 110V-220V. The output is 20V, 3A.
main parameter
24V/2A single power supply
Using dedicated ICs to achieve hardware overheating protection
Perfect automatic paper cutter control, can be controlled by software for half cutting and full cutting
Multi buffer queue structure for continuous and uninterrupted printing
Standard RS232 or LPT printer interface, can be directly connected to PC or microcontroller
The serial baud rate can be set by pressing the button.
TB67H450FNG/AFNG characteristics
Single chip integrated circuit using BiCD technology
Can achieve PWM constant current drive and direct PWM drive
Supports four working modes: forward/reverse/brake/stop (OFF)
Built in output MOSFET with low conductivity resistance (high voltage side+low voltage side=0.6 Ω (typical value))
Realize high voltage and high current drive, absolute maximum rated value: 50V/3.5A
Built in multiple error detection functions (TSD, ISD, and UVLO)
Built in VCC voltage regulator for internal circuit operation
Electric water valve control scheme
An electric water valve designed based on TB67H450
describe
This 5W torque 4NM motor driver is a reference design for TB67H450AFNG, used to control the forward and reverse rotation and brake braking of the motor, and achieve automatic water valve opening and closing function. This solution has been optimized and equipped with MCU to provide signal feedback function and external control.
characteristic
Evaluation Board
Wide voltage drive 5.5V-24V
Supports precise calibration of sampling current, enabling high current drive
Can achieve PWM constant current drive and direct PWM drive
Built in multiple error detection functions (TSD, ISD, and UVLO)
Supports four working modes: forward/reverse/brake/stop (OFF), achieving precise motor position
application
Industrial automation, small equipment for precision fluid control
Water saving device (university water-saving system) bathtub card swiping system
Environmental protection, water supply and drainage, water treatment engineering, agricultural irrigation
Replacing solenoid valves, especially in unreliable working environments
Chemical, medical, heat metering, central air conditioning fan coil units, anti spray forests, drinking water equipment, timed water on/off, etc

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