stk672-050-e ON Semiconductor, stk672-050-e Datasheet
stk672-050-e
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stk672-050-e Summary of contents
Page 1
... STK672-050-E Overview The STK672-050 stepping motor driver hybrid IC that uses power MOSFETs in the output stage. It includes a built- in microstepping controller and is based on a unipolar constant-current PWM system. The STK672-050-E supports application simplification and standardization by providing a built-in 4 phase distribution stepping motor controller. It supports five excitation methods: 2 phase, 1-2 phase, W1-2 phase, 2W1-2 phase, and 4W1-2 phase excitations, and can provide control of the basic stepping angle of the stepping motor divided into 1/16 step units ...
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... Operating substrate temperature Junction temperature Storage temperature Allowable Operating Ranges 25°C Parameter Supply voltage 1 Supply voltage 2 Input voltage Phase driver withstand voltage Output current STK672-050-E Symbol Conditions max No signal max No signal V IN max Logic input pins 0.5s, 1 pulse, when applied. ...
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... The design target value is shown for the current distribution ratio. Package Dimensions unit:mm (typ) 4164 67.0 60 3.6 2.0 0.5 (9. STK672-050-E Symbols Conditions I CC Pin 7, with ENABLE pin held low 7.5Ω (I ≈ 3A) Vsat Load 3.5Ω 3.8mH Ioave For each phase, Vref ≈ 0.6V Vdf ...
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... Internal Block Diagram STK672-050-E ITF02390 No.5228-4/19 ...
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... When measuring fc: With SW1 set to ‘b’, Vref = 0V When measuring Set ENABLE low STK672-050 ITF02392 SW2 STK672-050 No.5228-5/ SW1 ITF02394 ...
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... W1-2 phase excitation Forward CWB 0 A MO1 1 MO2 0 STK672-050 2= STK672-050 2= Motor current waveform W1-2 phase excitation 2W1-2 phase excitation 2W1-2 phase excitation 4W1-2 phase excitation Reverse ...
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... The capacitor C2 may be included if necessary. Its ground line should also be as short as possible. + Motor drive -- power supply PG 470μF or over Separation + 5V power -- supply SG STK672-050-E Stepping motor + C1 + Oscillator circuit (CLK) Stepping motor + C1 + Oscillator circuit (CLK) STK672-050 CLK 14 8 Vref 22 SG ITF02396 STK672-050 CLK 14 8 Vref 22 SG ITF02397 No.5228-7/19 ...
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... ENABLE Output cutoff 9, 10, 11 M1, M2, M3 Excitation mode setting 12, 13 M4, M5 Vector locus setting 16 RESET System reset 8 Vref Current setting STK672-050-E Enable φA (control signal) CR Divider oscillator 45kHz S R Noise Latch circuit Q filter AND Driver Block Basic Circuit Structure Function Built-in pull-up resistor CMOS Schmitt trigger input ...
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... When ENABLE is low: This hybrid IC goes to the hold state and excitation drive output (motor current) is forcibly turned off. In this mode, the hybrid IC system clock is stopped and no inputs other than the reset input have any effect on the hybrid IC state. STK672-050-E CLK Input Acquisition Timing (M3 = Low) Excitation counter up/down ...
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... Constant-current control can be applied to the motor excitation current at 100% of the rated current by applying a voltage less than the control system power supply voltage minus 2.5V. - Applications can apply constant-current control proportional to the Vref voltage, with this value of 2.5V as the upper limit. STK672-050 ...
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... Current division ratios set by M3, M4, and M5 ········· Values provided for reference purposes. Mode Setting 2W1-2 2W1-2 2W1-2 Current division 4W1-2 2W1-2 ratio 2W1-2 2W1-2 2W1-2 STK672-050-E Function Pin circuit type Standard CMOS structure Standard CMOS structure Phase A Phase Circular ...
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... Excitation phase according to the first clock input pulse after changing the excitation mode setting (M1 and M2) Excitation phase immediately before setting the excitation mode STK672-050-E 2W1-2 phase → 1-2 phase ...
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... phase →1-2 phase STK672-050-E 2W1-2 phase → 1-2 phase W1-2 phase → 1-2 phase A 0 ...
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... RESET CWB CLK MO1 MO2 MOI 100% 92% 71% 40% Vref A 100% 92% 71% 40% Vref B STK672-050-E 1-2 Phase Excitation Timing Chart ( RESET CWB CLK MO1 MO2 MOI 100% 71% Vref A 100% 71% Vref B 2W1-2 Phase Excitation Timing Chart ( ...
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... RESET CWB CLK MO1 MO2 MOI 100% 92% 83% 71% 55% 40% 20% Vref A 100% 92% 83% 71% 55% 40% 20% Vref B STK672-050-E W1-2 Phase Excitation Timing Chart ( RESET CWB CLK MO1 MO2 MOI 100% 92% 71% 40% Vref A 100% 92% 71% 40% ...
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... The voltage drop of the body diode and the current detection resistor ( Phase current peak value ( Phase current rise time ( Constant-current operating time ( Phase switching current regeneration time (s) STK672-050-E I fclock OH · · fclock · · fclock · ...
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... θj-c × Pds (°C) Here, we determine Pds, the loss for each transistor, by determining each excitation mode. Pds = The steady-state thermal resistance θj power MOSFET is 5°C/W. STK672-050-E Tc max: Hybrid IC substrate temperature (°C) Ta: Application internal temperature (° Hybrid IC internal average loss ( the heat sink from the graphs shown below ...
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... Supply voltage ΔTc - PPS 110 Test motor: PK264-02B 100 90 80 W1-2EX =2. 100 1k 10k Input PPS - Hz STK672-050-E 58 Tc=25° 6 ITF02404 2= ITF02406 3.0 Tc=25° 2=5V 2 ...
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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, 2008. Specifications and information herein are subject to change without notice. STK672-050 ...