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

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

Author:    Time:2024-06-11    Browse:

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


1,Printer POS scheme

In recent years, with the sustained and rapid growth of China's economy, the continuous promotion of electronic information management such as the "Three Gold Project", and the continuous improvement of the service level of commercial/retail, finance, communication, transportation/transportation industries, the demand for label printers has increased rapidly. At present, the application of thermal label printers in China has entered a period of rapid popularization, and the market scale continues to grow rapidly.

Below is pic of Printer control board


Application field : 

Printing of queuing machines, 

shopping mall POS cash registers,

 instruments and meters, postal and telecommunications fields,

 medical equipment, financial equipment, 

tax control cash registers, 

lottery machines and various self-service terminal equipment


Characteristic :

The rated operating voltage range is 20-24V, and the power input for each printer adapter is 110V-220V. The output is 20V, 3A.


Main parameters:

24V/2A single power supply 

Use special IC to achieve hardware overheating protection 

Perfect automatic paper cutter control, half-cut and full-cut can be controlled by software.

Multi-buffer queue structure to achieve continuous and uninterrupted printing Standard RS232 or standard LPT printer interface can be directly 

connected to PC or single-chip microcomputer. The serial baud rate can be set by the key.


TB67H450FNG/AFNG features


Single-chip integrated circuit with BiCD process It can realize PWM constant current drive and direct PWM drive. Support four working modes: forward/reverse/briking/stopping (OFF) Built-in output MOSFET with low on-conductivity (high-voltage side + low-voltage side = 0.6Ω (typical)) Achieve high voltage and high current drive, absolute maximum rating: 50V/3.5A Multiple built-in error detection functions (heat shutdown (TSD), overcurrent detection (ISD) and undervoltage locking (UVLO)) Built-in VCC voltage regulator for internal circuit work


Electric water valve control scheme

An electric water valve based on TB67H450


Description:

 This power 5W torque 4NM motor driver is a reference design of TB67H450AFNG, which is used to control the forward and reverse rotation and braking of the motor, and realize the automatic switching function of the water valve. This scheme is optimized and equipped with MCU to provide signal feedback function and external control.


Characteristic:

Wide voltage drive 5.5V-24V It supports accurate correction of sampling current, which can achieve high current drive PWM constant current drive and direct PWM drive can be achieved Built-in error detection functions (thermal shutdown (TSD), overcurrent detection (ISD) and undervoltage locking (UVLO)) Supports the forward/reverse/brake/stop (OFF) working modes to achieve accurate position of the motor


Schematic diagram



Applications:

Small equipment for industrial automation and precision fluid control Water saver (college water-saving system) bath card swiping system Environmental protection, water supply and drainage, water treatment engineering, agricultural irrigation Replace solenoid valves, especially in unreliable workplaces Chemical industry, medical treatment, heat meter, central air conditioning fan coil, anti-spray forest, drinking water equipment, regular water cut-off, etc.


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