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STK672-040 Dataheets PDF



Part Number STK672-040
Manufacturers Sanyo Semicon Device
Logo Sanyo Semicon Device
Description Microstep Operation-Supported 4-Phase Stepping Motor Driver (Io= 1.5A)
Datasheet STK672-040 DatasheetSTK672-040 Datasheet (PDF)

Ordering number: EN 5227A Thick Film Hybrid IC STK672-040 Microstep Operation-Supported 4-Phase Stepping Motor Driver (IO = 1.5A) Overview The STK672-040 is a unipolar constant-current choppertype externally-excited 4-phase stepping motor driver hybrid IC which uses MOSFET power devices. It has a microstep operation-supported 4-phase distributed controller built-in to realize a high torque, low vibration, low noise stepping motor driver using a simple control circuit. Package Dimensions unit.

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Ordering number: EN 5227A Thick Film Hybrid IC STK672-040 Microstep Operation-Supported 4-Phase Stepping Motor Driver (IO = 1.5A) Overview The STK672-040 is a unipolar constant-current choppertype externally-excited 4-phase stepping motor driver hybrid IC which uses MOSFET power devices. It has a microstep operation-supported 4-phase distributed controller built-in to realize a high torque, low vibration, low noise stepping motor driver using a simple control circuit. Package Dimensions unit: mm 4161 [STK672-040] Applications • Printer, copier, and X-Y plotter stepping motor drivers Features • Microstep sine-wave driver operation using only an external clock input (0.33Ω current detection resistor built-in) • Microstep drive using only an external reference voltage setting resistor • 2, 1-2, W1-2, 2W1-2, 4W1-2 phase excitation selectable using external pins • Selectable vector locus (perfect circle mode, inside 1 mode, outside 2 modes) to match motor characteristics in microstep drive state • Phase hold function during excitation switching • Schmitt trigger inputs with built-in pull-up resistor (20kΩ) • Monitor output pin enabling real-time confirmation of IC excitation • The CLK and RETURN inputs provide an internal noise elimination circuit as well as CMOS Schmitt circuit to prevent malfunction due to impulse noise. • 4-phase distribution switch timing selected externally to either CLK rising-edge only detection mode or both rising-edge and falling-edge detection mode • ENABLE pin for excitation current cutoff, thereby reducing system current drain when driver is stopped Series Organization The following devices form a series with differing output capacity. Type No. STK672-040 STK672-050 Output current (A) 1.5 3.0 SANYO Electric Co., Ltd. Semiconductor Business Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 10997HA(ID) / 110896HA(ID) No. 5227—1/11 STK672-040 Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage 1 Maximum supply voltage 2 Input voltage Phase output current Repetitive avalanche handling capability Maximum output dissipation Operating substrate temperature Junction temperature Storage temperature Symbol VCC1 max VCC2 max VIN max IOH max Ear max Pd max Tc max Tj max Tstg θc–a = 0 No signal No signal Logic input block One 0.5s pulse, VCC1 applied, Load/phase: R = 5Ω, L = 10mH Conditions Ratings 52 −0.3 to +7.0 −0.3 to +7.0 2.2 38 12 105 150 −40 to +125 Unit V V V A mJ W °C °C °C Allowable Operating Ranges at Ta = 25°C Parameter Supply voltage 1 Supply voltage 2 Input voltage Phase driver withstand voltage Phase current Symbol VCC1 VCC2 VIH VDSS IOH max Tr1, 2, 3, 4 (A, A, B, B outputs) 50% duty With signal With signal Conditions Ratings 10 to 45 5.0 ± 5% 0 to VCC2 100 (min) 1.5 (max) Unit V V V V A Electrical Characteristics at Tc = 25°C, VCC1 = 24V, VCC2 = 5V Parameter Control supply current Output saturation voltage Average output current FET diode forward voltage [Control inputs] Input voltage VIH VIL Input current [Vref input] Input voltage Input current [Control outputs] Output voltage PWM frequency [Current division ratio (A/B)] 2W1-2, W1-2, 1-2 2W1-2, W1-2 2W1-2 2W1-2, W1-2, 1-2 Vref Vref Vref Vref θ = 1/8 θ = 2/8 θ = 3/8 θ = 4/8 100 92 83 71 % % % % No. 5227—2/11 VOH VOL fc I = −3mA (MoI, Mo1, Mo2 pins) I = +3mA (MoI, Mo1, Mo2 pins) 2.4 – 37 – – 47 – 0.4 57 V V kHz VI II Pin 8 Pin 8 0 – – 1 2.5 – V µA IIH IIL Excluding Vref pin Excluding Vref pin Excluding Vref pin Excluding Vref pin 4.0 – 0 125 – – 1 250 – 1.0 10 510 V V µA µA Symbol ICC Vsat Io ave Vdf Conditions Pin 7 input, ENABLE = low RL = 15Ω (I = 1.5A) Vref = 1V, Load/phase: R = 3.5Ω, L = 3.8mH If = 1.0A min – – 0.465 – typ 4.5 1.4 0.517 1.2 max 15 1.9 0.569 1.8 Unit mA V A V STK672-040 2W1-2 2W1-2, W1-2 2W1-2 2 Vref Vref Vref Vref θ = 5/8 θ = 6/8 θ = 7/8 55 40 20 100 % % % % Note: All tests are made using a constant-voltage supply. The current division ratio shows the design value. Equivalent Block Diagram Sample Application Circuit 2W1-2 phase excitation (microstep operation) No. 5227—3/11 STK672-040 Motor Current Calculation The motor current IOH is determined by the reference voltage on pin 8 (Vref). The relationship between IOH and Vref is given by the following equation. 1 - × Vref ⁄ Rs I OH = -3 where Rs is the built-in current detection resistance (0.33Ω ± 3%). The motor current ranges from the current due to the frequency duty set by the oscillator (0.05 to 0.1A) to the allowable operating range maximum of IOH = 1.5A. Motor current waveform Function Tables M1 0 0 1 1 0 0 1 1 M2 0 1 0 1 0 1 0 1 M3 0 0 0 0 1 1 1 1 CWB 0 1 Excitation Phase 1-2 Phase 2W1-2 Rising and falling edge Phase W1-2 Phase 4W1-2 Phase 2 Phase W1-2 Rising edge only Phase 1-2 Phase 2W1-2 Direction Forward Reverse Mo1 0 0 1 1 Mo2 0 1 0 1 Output A B A B Phase switching CLK edge timing Input ENABLE RESET Active level Low Low No. 5227—4/11 STK672-040 Design material 1. E.


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