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Summary of Contents for marutsu TB67H452FTG
- Page 1 Instruction Manual for Evaluation Board of TB67H452FTG July 10, 2019 Rev.1.1...
- Page 2 【Outline】 The TB67H452FTG is a two-phase bipolar driver using a PWM chopper for dual stepping motors with the clock control system. Adopted 130 nm analog process achieves the rating of 40 V and 2.0 A. The IC has four H-bridge circuits and an operation mode switching circuit.
- Page 3 Basic Notes in Using Evaluation Board Power supply voltage and operating voltage range Apply the voltage to the VM pin in evaluating the IC. In case of using the level select pin mounted on this evaluation board, the voltage should be applied to the VDD pin.
- Page 4 Notes in Using Evaluation Board –Error detection circuits Thermal shutdown circuit (TSD) When the IC detects an over temperature (150℃ (typ.)), the internal circuit turns off the output MOSFETs. Reassert the VM power supply or use the standby mode to release this function. The TSD is triggered when the IC is over heated irregularly.
- Page 5 Setting Evaluation Board 1 Setting motor control mode This evaluation board has a level select pin for setting the operation of the TB67H452FTG (shown in the photo below). *It is set to the low level. Mode select pin When selecting the function by using the level select pin, input high level from the VDD pin.
- Page 6 Setting Evaluation Board 2 Setting motor current Setting motor current Vref(V) Iout(max) = VREF(gain) x (Ω) VREF(gain) = 1/5.0 (typ.) R_RSC R_RSB = 0.22 Ω By implementing potentiometers to R_VRFA, R_VRFB, R_VRFC, and R_VRFD, the VCC voltage of the internal regulator or the externally supplied R_RSD R_RSA VDD voltage can be divided, and generating the...
- Page 7 Setting Evaluation Board 3 Setting chopping frequency of motor constant current Set the chopping frequency by referring to the table shown below. The resistor of 120 kΩ is adopted to R_OSCM and the capacitor of 270 pF is adopted to C_OSCM in order to provide the frequency of 100 kHz at the time of shipment.
- Page 8 Evaluation Board Connection Method 1 Power supply MODE0 MODE1 MODE2 Motor control mode Stepping Motor (S) ×2 (10 V to 47 V) 2-phase 2-phase bipolar bipolar stepping Stepping motor 2 motor 1 Power supply for switching (3.3 V to 5 V) Vref_B Vref_C (for phase B)
- Page 9 Evaluation Board Connection Method 2 Power supply MODE0 MODE1 MODE2 Motor control mode DC Motor (S) ×4 (10 V to 47 V) Brushed Brushed DC motor C DC motor B Brushed Brushed DC motor D DC motor A Power supply for switching (3.3 V to 5 V) Vref_B...
- Page 10 Circuit Diagram of Evaluation Board 3-pin trimmer resistors...
- Page 11 Do not use this product for such applications. This company assumes no liability for damages which may result from use of the product. Manufactured and Distributed by Marutsuelec Co., Ltd. 5-2-2, Seiki Daiichi Building 7F, Sotokanda, Chiyoda-ku, Tokyo 101-0021, Japan https://www.marutsu.com Tel：+81-3-6803-0209 FAX：+81-3-6803-0213...
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