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AM4964 Arkusz danych(PDF) 7 Page - Diodes Incorporated |
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AM4964 Arkusz danych(HTML) 7 Page - Diodes Incorporated |
7 / 21 page AM4964 Document number: DS37241 Rev. 2 - 2 7 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated Functional Descriptions HB – Hall Bias Output This is a 1.25V nominal voltage source to bias a differential un-buffered Hall element sensor. If a Hall element requires a lower voltage than the H-Bias output, connect an appropriate value resistor between the HB pin and the Hall element supply pin. IN+ and IN- – Hall Inputs The rotor position is detected by a Hall sensor, with the output applied to the IN+ and IN- pins. This sensor can be either a 4 pin 'naked' Hall device or of the 3-pin buffered switching type. For a 4-pin device the differential Hall output signal is connected to the IN+ and IN-pins. For a buffered Hall sensor the Hall device output is attached to the IN+ pin, with a pull-up attached if needed, whilst the IN- pin has an external potential divider attached to hold the pin at half VREF. When IN+ is high in relation to IN-, OUT2 is the active drive. PWM – Pulse Width Modulate Signal Input Pin The PWM signal is applied at this pin and then be translated to be stable voltage to control the motors rotate speed. TL – Low Temperature Corner Set Pin A resistor (R8) is connected between TL and ground to adjust the low corner temperature. Low Temperature Corner Value vs. R8 Resistor Value 5 6 7 8 9 10 24 26 28 30 32 34 36 38 40 R8 (k) R T =TSM2A103F39H1RZ |
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