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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TLE4728G датащи(PDF) 3 Page - Infineon Technologies AG |
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TLE4728G датащи(HTML) 3 Page - Infineon Technologies AG |
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3 / 25 page  TLE 4728 G Data Sheet 3 2004-03-01 Pin Definitions and Functions Pin No. Function 1, 2, 23, 24 Digital control inputs IX0, IX1 for the magnitude of the current of the particular phase. 1) “No current” in both bridges inhibits the circuit and current consumption will sink below 3 mA 3 Input phase 1; controls the current through phase winding 1. On H-potential the phase current flows from Q11 to Q12, on L-potential in the reverse direction. 5 ... 8, 17 ... 20 Ground; all pins are connected at leadframe internally. 4 Oscillator; works at approx. 25 kHz if this pin is wired to ground across 2.2 nF. 10 Resistor R 1 for sensing the current in phase 1. 9, 12 Push-pull outputs Q11, Q12 for phase 1 with integrated free-wheeling diodes. 11 Supply voltage; block to ground, as close as possible to the IC, with a stable electrolytic capacitor of at least 47 µF in parallel with a ceramic capacitor of 100 nF. 14 Error 2 output; signals with “low” the errors: short circuit to ground of one or more outputs or overtemperature. 13, 16 Push-pull outputs Q22, Q21 for phase 2 with integrated free-wheeling diodes. 15 Resistor R 2 for sensing the current in phase 2. I set = 450 mA with Rsense = 1 Ω IX1 IX0 Phase Current Example of Motor Status H H 0 No current1) H L 0.155 × I set Hold L H I set Normal mode L L 1.55 × I set Accelerate |
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