STK672-060 데이터 시트보기 (PDF) - SANYO -> Panasonic

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STK672-060

Unipolar constant-current chopper (external excitation PWM) circuit with built- in microstepping controller

SANYO -> Panasonic 

STK672-060

M1, M2, and M3 (Excitation mode and CLK input edge timing selection)

Pin circuit type: CMOS Schmitt trigger with built-in pull-up resistor (20 kΩ typical)

Function

M2

M1

M3

1

0

0

0

2 phase excitation

1-2 phase excitation

0

1

1

1

0

1

1-2 phase excitation W1-2 phase excitation 2W1-2 phase excitation

W1-2 phase excitation 2W1-2 phase excitation 4W1-2 phase excitation

Phase switching CLK edge timing

Rising edge only

Both rising and falling edges

Timing when mode setting is enabled: Do not change the mode within ±5 µs of a CLK signal rising or falling edge.

CLK input

Mode Setting Acquisition Timing

System clock

Mode setting

M1 to M3

Mode switching clock

Hybrid IC internal setting state

Mode switching timing

Phase excitation clock

Point at which the phase excitation counter

is incremented or decremented A13265

M4 and M5 (Rotation vector locus setting for microstepping mode)

M4

1

0

1

0

M5

1

0

0

1

1

Phase B

Mode

Circular

Œ



Ž

See the table on the following page for details on the current division

Circular

2

ratio.

3

Phase A

ITF02273

RESET (Resets the whole system)

Pin circuit type: CMOS Schmitt trigger with built-in pull-up resistor (20 kΩ typical)

Function: The circuit states are all set to their initial values by applying a low level (with a pulse width of 10 µs or

longer) to the RESET pin. At this time, the A and B phases are set to their origin points, regardless of the

excitation mode. The output current becomes about 71% after the reset is cleared.

Note: The Vref voltage is established by applying a reset after power is first applied. Applications must perform a

power-on reset operation after the VCC2 power is applied.

Vref (Sets the current value used as the reference for constant-current output)

Pin circuit type: Analog input circuit

Function: Applications can implement constant-current control of the motor excitation current at 100% of the rated

current value by applying a voltage lower than the control system power supply voltage VCC2 minus 2.5 V.

This IC supports constant current control proportional to the Vref voltage with an upper limit of 2.5 V.

No. 7441-10/19

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