STK672-432A-E Sanyo Semicon Device, STK672-432A-E Datasheet
STK672-432A-E
Related parts for STK672-432A-E
STK672-432A-E Summary of contents
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... Ordering number : ENA1586A STK672-432A-E Overview The STK672-432A hybrid IC for use as a unipolar, 2-phase stepping motor driver with PWM current control. Applications • Office photocopiers, printers, etc. Features • Built-in overcurrent detection function (output current OFF). • Built-in overheat detection function (output current OFF). ...
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... Overheat detection temperature PWM frequency Notes *1: A fixed-voltage power supply must be used. *2: The value for Ioave assumes that the lead frame of the product is soldered to the mounting circuit board. STK672-432A-E Symbol Conditions V CC max No signal V DD max No signal V IN max ...
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... W1-2 4W1-2 4W1-2 2W1-2 4W1-2 2 Notes *3: The values given for Vref are design targets, no measurement is performed. Package Dimensions unit:mm (typ) 24.2 (18.4) (R1.47) 1 1.0 18 1.0=18.0 STK672-432A-E Symbol Conditions θ=15/16, 16/16 1-2 θ=14/16 θ=13/16 θ=12/16 θ=11/16 θ=10/16 θ=9/16 θ=8/16 1-2 Vref *3 θ=7/16 θ=6/16 θ=5/16 θ=4/16 θ=3/16 θ ...
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... The operating substrate temperature, Tc, given above is measured while the motor is operating. Because Tc varies depending on the ambient temperature, Ta, the value and the continuous or intermittent operation always verify this value using an actual set. • The Tc temperature should be checked in the center of the metal surface of the product package. STK672-432A 3.0 200Hz 2 phase excitation 2 ...
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... Current divider ratio switching Phase V SS advance Pseudo sine counter wave generator Phase excitation Overcurrent signal detection generator Overheating Latch detection Reference clock - generator PWM + control - + SUB STK672-432A RESETB 1 14 Vref P. ...
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... I OH ≈ (Vref ÷ 4.9) ÷ Rs ·················································································· (2) The value of 4.9 in Equation (2) above represents the Vref voltage as divided by a circuit inside the control IC. Rs: 0.152Ω (Current detection resistor inside the hybrid IC) STK672-432A-E 5V RO1 ...
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... During 1-2 phase excitation, the hybrid IC operates at a current setting =100% when the CLOCK signal rises. Conversely, pseudo micro current control is performed to control current =100% or 71% at both edges of the CLOCK signal. CWB pin Forward/CW Reverse/CCW ENABLE • RESETB pin ENABLE RESETB STK672-432A 1-2-phase excitation W1-2 phase (I OH =100%) excitation ...
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... RESET CWB CLK MOI 100% 92% 71% 40% A phase Vref 100% 92% 71% 40% B phase Vref STK672-432A-E 1-2-phase excitation timing charts (M3= RESET CWB CLK MOI 100% 71% A phase Vref 100% 71% B phase Vref ...
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... CWB CLK MOI 100% 97% 92% 83% 71% 55% 40% 20% A phase Vref 100% 97% 92% 83% 71% 55% 40% 20% B phase Vref STK672-432A-E W1-2-phase excitation timing charts (M3= RESET CWB CLK MOI 100% 92% 71% 40% A phase Vref 100% 92% 71% 40% ...
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... The reset signal is formed by the power-on reset function built into the HIC and the RESETB terminal. When activating the internal circuits of the HIC using the power-on reset signal within the HIC, be sure to connect Pin 14 of the HIC STK672-432A-E Pin Name MOI ...
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... Input pin 100k Ω The input pins of this driver all use Schmitt input. Typical specifications at Tc=25°C are given below. Hysteresis voltage is 0.3V (VIHa-VILa). When rising 1.8Vtyp Input voltage STK672-432A-E 4Vtyp 10 μ least ENABLE, CLOCK, and RESETB Signals Input Timing 5V Output pin ...
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... Abnormality detection can be released by a RESETB operation or turning V DD voltage on/off. [MOI output] The output frequency of this excitation monitor pin varies depending on the excitation mode. For output operations, see the timing chart. STK672-432A-E <Configuration of the FAULT1 output pin> Output pin Pin 16 ...
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... This hybrid IC is equipped with a function for detecting overcurrent that arises when the motor burns out or when there is a short between the motor terminals. Overcurrent detection occurs at 3.4A typ with the STK672-432A-E. Current when motor terminals are shorted Set motor ...
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... For V DSS , IAVL, and tAVL, be sure to actually operate the STK672-4** Series and substitute values when operations are observed using an oscilloscope. Ex DSS =110V, IAVL=1A, tAVL=0.2μs when using a STK672-432A-E driver, the result is: PAVL=110×1×0.5×0.2×10 V DSS =110V is a value actually measured using an oscilloscope. ...
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... The operating conditions given above represent a loss when driving a 2-phase stepping motor with constant current chopping. Because it is possible to apply 2.6W or more =0A, be sure to avoid using the MOSFET body diode that is used to drive the motor as a zener diode. STK672-432A-E PAVL - 4.0 3.5 3 ...
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... Calculating HIC Internal Power Loss The average internal power loss in each excitation mode of the STK672-432A-E can be calculated from the following formulas. *1 [Each excitation mode] 2-phase excitation mode 2PdAVex= (Vsat+Vdf) ×0.5×CLOCK×I OH ×t2+0.5×CLOCK×I OH × (Vsat×t1+Vdf×t3) --------------------------- (4-1) 1-2 Phase excitation mode 1-2PdAVex= (Vsat+Vdf) × ...
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... Then, determine if a heat sink is necessary by comparing with the Δ graph (see next page) based on the calculated average output loss, HIC. For heat sink design, be sure to see STK672-432A-E. The HIC average power, PdAVex described above, represents loss when not in avalanche mode. To add the loss in avalanche mode, be sure to add PAVL (4-13, 14) using the formula (3-2) for average power loss , PAVL, for STK672- 4** avalanche mode, described below to PdAVex described above ...
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... Substrate temperature rise, ΔTc (no heat sink) - Internal average power dissipation, PdAV STK672-432A-E Output saturation voltage, Vsat - Output current Vsat - I OH 1.0 0.8 0.6 0.4 0 0.5 1.0 1.5 2.0 Output current Forward voltage, Vdf -Output current Vdf 1.4 1.2 1.0 0.8 0.6 0.4 0 0.5 1.0 1.5 2.0 Output current ΔTc - PdAV 80 70 ...
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... The size of heat sink for the HIC varies depending on the magnitude of the average power loss, PdAV, within the HIC. The value of PdAV increases as the output current increases. To calculate PdAV, refer to “Calculating Internal HIC Loss for the STK672-432A-E”. Calculate the internal HIC loss, PdAV, assuming repeat operation such as shown in Figure 1 below, since conduction ...
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... Figure 2 Substrate temperature rise, ΔTc - Internal average power dissipation, PdAV STK672-432A-E ΔTc - PdAV 0.5 1.0 1.5 2.0 Hybrid IC internal average power dissipation, PdAV - W Figure 3 Heat sink area (Board thickness: 2mm) - θc-a θc 100 1 ...
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... SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellectual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of June, 2011. Specifications and information herein are subject to change without notice. STK672-432A-E PdPK - Ta 3.0 2.5 2.0 1 ...