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M54646AP Scheda tecnica(PDF) 1 Page - Mitsubishi Electric Semiconductor |
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M54646AP Scheda tecnica(HTML) 1 Page - Mitsubishi Electric Semiconductor |
1 / 6 page 2-PHASE STEPPER MOTOR DRIVER M54646AP MITSUBISHI <CONTROL / DRIVER IC> PIN CONFIGURATION (TOP VIEW) BLOCK DIAGRAM Outline 28P4B DESCRIPTION The M54646AP is a semiconductor IC to drive bipolar stepper motors by controlling winding current with reference to a designated current level. FEATURES q Wide driver voltage range (10 – 40V) q Wide output current control range (20 – 800mA) q Bipolar and constant current control q Built-in flywheel diode q Built-in thermal protection circuit APPLICATION Office automation equipment such as printers, FDDs, HDDs and facsimiles FUNCTION M54646AP Integrated Circuit drives two-phase bipolar stepper motors while controlling winding current: It controls winding current direction by inputting phases (pins 14 and 15) and, at the same time, controls winding current amperage with terminals VR (pins and ). Provided with control circuits that output two phases, this IC is sufficient to drive a two-phase bipolar stepper motor. 2 27 20 21 22 23 GND 28 1 1 1 MA2 MB2 VMM2 1 1 16 24 6789 GND 1 1 1 1 MA1 MB1 1 1 13 5 12 17 TSD Comparator input (2) C2 One-shot multi time constant T2 tOFF = 0.69 • RT • CT Current sensor E2 Current sensor C1 Comparator input (1) Mono- stable tOFF = 0.69 • RT • CT Current sensor One-shot multi time constant (1) T1 E1 Current sensor (1) Mono- stable Power supply (2) VCC2 Power supply (1) VCC1 VR2 Ph2 VR1 Ph1 VMM1 19 18 15 27 410 14 2 3 25 1 4 5 3 2 6 7 8 9 10 12 13 14 11 C1 VR1 VMM1 MA1 E1 MB1 VMM1 VCC1 T1 Ph1 GND → → ← ← ← ← → → 28 25 24 26 27 23 22 21 20 19 17 16 15 18 ← ← → → → ← → ← MB2 VMM2 VCC2 T2 Ph2 GND C2 VR2 VMM2 MA2 E2 Comparator input (1) Comparator reference voltage input (1) Output stage supply voltage (1) Output terminal (1) Current sensor (1) Output terminal (1) Output current direction switch One-shot multi time constant Power supply (1) Output stage supply voltage (1) Output terminal (2) Output current direction switch One-shot multi time constant Power supply (2) Output stage supply voltage (2) Comparator input (2) Comparator reference voltage input (2) Output stage supply voltage (2) Output terminal (2) Current sensor (2) |
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