STK672-120 Sanyo Semicon Device, STK672-120 Datasheet
STK672-120
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STK672-120 Summary of contents
Page 1
... IC. It features power MOSFETs in the output stage and a built-in phase signal distribution IC. The incorporation of a phase distribution IC allows the STK672-120 to control the speed of the motor based on the frequency of an external input clock signal. It supports two types of excitation for motor control: 2-phase excitation and 1-2 phase excitation ...
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... V supply current DD Output current FET diode forward voltage Output saturation voltage High-level input voltage Low-level input voltage Input current Vref input voltage Vref input bias current Note: A fixed-voltage power supply must be used. STK672-120 Symbol Conditions V max No signal CC V max No signal DD V max ...
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... Internal Equivalent Circuit Block Diagram STK672-120 No. 6042-3/9 ...
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... A and BB may not be driven. Increase the value of the capacitor CO4 and check circuit operation again. • See the timing chart for the specific details on circuit operation. STK672-120 ) characteristics into account, the resistor RO1 must not exceed 100 kΩ. Function Two-phase stepping motor At least 100 µ ...
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... Figure 2 Motor Current Vref Rs Here hybrid IC internal current detection resistor OH Vref = (R02 (R01 + R02 STK672-120 : Rs = 0.165 Ω • Allowable motor current operating range The motor current (I ) must be held within the range corresponding to the area under the curve shown in figure 4. O For example, if the operating substrate temperature Tc is 105° ...
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... It is extremely difficult for Sanyo to calculate the internal average power dissipation P conditions. After performing the above rough calculations, always install the hybrid actual end product and verify that the substrate temperature Tc does not rise above 105°C. STK672-120 Figure 3 Motor Current Timing can be calculated from the following formula. ...
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... Timing Chart 2-phase excitation Gate F1 Gate F2 Gate F3 Gate F4 1-2 phase excitation Gate F1 Gate F2 Gate F3 Gate F4 STK672-120 No. 6042-7/9 ...
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... Gate F1 Gate F2 Gate F3 Gate F4 Switching from 2-phase to 1-2 phase excitation Gate F1 Gate F2 Gate F3 Gate F4 STK672-120 No. 6042-8/9 ...
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... This catalog provides information as of January, 1999. Specifications and information herein are subject to change without notice. STK672-120 Figure 5 Continuous 2-phase excitation operation Motor used:R = 0.63 Ω ...