TA8435H is a single-chip chord subdivided two-phase stepping motor driver special chip TA8435H produced by Toshiba. It can drive two-phase stepping motor. The chip has the following features: wide operating voltage range (10V40V); output current up to 1.5A, with Step, half step, 1/4 subdivision, 1/8 subdivision mode is available; pulse width modulation chopper drive mode; positive/reverse control function; reset and enable pin. Pin Functions The following table shows the pin functions of the TA8435H. Brief description of the design The following figure shows the application circuit diagram of the TA8435H. The enable control, the positive and negative control, the clock input and the subdivision control in the circuit are all driven by the bidirectional data driver chip 74245 and then applied to the TA8435H, thus electrically isolating the driver chip TA8435H from the input stage to function as a logic Flat isolation and protection: R18 and C16 form a reset circuit, and D1~D4 fast recovery diodes can be used to bleed the stepper motor winding current. Since the REFIN pin is connected to a high level, the VNF is 0.8V, and the output stage chopping current is VNF/R19=0.8/0.8=1A. When using a different two-phase stepping motor, select the appropriate R19 according to the current. And R20. This paper introduces three stepping motor driver chips. The working principle of stepping motor driver chip is basically similar. When we select the chip, we select the subdivision number according to the need, select the output current, and then according to the characteristics of the chip itself. The peripheral circuit is designed. Generally, there are typical circuits for our reference. Combined with our control, we need to add a microprocessor to design a smart stepper motor driver.
ZGAR bar 4000 Puffs
ZGAR electronic cigarette uses high-tech R&D, food grade disposable pod device and high-quality raw material. All package designs are Original IP. Our designer team is from Hong Kong. We have very high requirements for product quality, flavors taste and packaging design. The E-liquid is imported, materials are food grade, and assembly plant is medical-grade dust-free workshops.
Our products include disposable e-cigarettes, rechargeable e-cigarettes, rechargreable disposable vape pen, and various of flavors of cigarette cartridges. From 600puffs to 5000puffs, ZGAR bar Disposable offer high-tech R&D, E-cigarette improves battery capacity, We offer various of flavors and support customization. And printing designs can be customized. We have our own professional team and competitive quotations for any OEM or ODM works.
We supply OEM rechargeable disposable vape pen,OEM disposable electronic cigarette,ODM disposable vape pen,ODM disposable electronic cigarette,OEM/ODM vape pen e-cigarette,OEM/ODM atomizer device.
Disposable Vape, bar 4000puffs, ZGAR bar disposable, Disposable E-cigarette, OEM/ODM disposable vape pen atomizer Device E-cig ZGAR INTERNATIONAL(HK)CO., LIMITED , https://www.zgarpods.com Pin number Pin symbol Pin description 1 S-GND Signal ground 2 RESET The reset terminal is active low. When the terminal is valid, the circuit is reset to the initial state. In all incentives, the output phases are placed at their origin 3 ENABLE Enable, active low: When the terminal is high, the circuit is in the maintenance state, and the output of each phase is forcibly turned off. 4 OSC The typical value of the external capacitor of this pin can determine the chopping frequency (15kHz-80kHz) of the internal driver stage of the chip. The calculation formula is: fosc=1/5.15×COSC. In the formula, the unit of COSC is uF, and the unit of FOSC is kHz. 5 CW/CCW Positive and negative control pins 6,7 CLKlCLK2 Clock input, single clock input or dual clock input, maximum clock input frequency is 5kHz 8,9 Ml, M2 Select incentive type, 00 means stepper motor works in full step mode, 10 is half step mode, 01 is 1/4 subdivision mode, 11 is 1/8 subdivision mode 10 REFIN VNF input control, VNF is 0.8V when connected to high level, VNF is 0.5V when connected to low level 11 MO Output monitoring for monitoring the peak position of the output current 12, 14, 25 NC air 13 VCC Logic circuit power supply pin, generally 5V 15 VMB B phase load power terminal 16 B- B phase output pin 17 PG-B Phase B load 18 NFB 8-phase current detection terminal 19 B+ B phase output pin 20 A- Phase A output pin twenty one NFA Phase A current detection terminal twenty two PG-A Phase A load twenty three A+ Phase A output pin twenty four VMA Phase A load power terminal 
